25 Oct 02:24
by Ziwei Jiang,
Yunan Qin,
Guohong Liao,
Li Liu,
Yanling Luo,
Quan Li,
Kun Guo
A Feringa-type motor with both rotary and aggregation-induced emissive properties by tuning its extent of aggregation is reported, laying a solid foundation for building motorized materials in which the motor can perform versatile functions.
Abstract
Aggregation-induced emission (AIE)allows tunable photoluminescence via the simple regulation of molecular aggregation. The research spurt along this vein has also offered tremendous opportunities for light-responsive artificial molecular machines that are to be fully explored for performing versatile functions. Herein, the study reports a light-driven Feringa-type motor, when in the appropriate aggregation state, not only demonstrates the light-activated rotary motion but emits photons with good quantum yield. A semi-quantitative TD-DFT calculation is also conducted to aid the understanding of the competitive photoluminescence and photoisomerization processes of the motor. Cytotoxicity test shows this motor possesses good biocompatibility, laying a solid foundation for applying it in the bio-environment. The results demonstrated that the engagement of the aggregation-induced emission concept and light-driven Feringa-motor can lead to the discovery of the novel motorized AIEgen, which will further stimulate the rise of more advanced molecular motors capable of executing multi-functionalities.
25 Oct 02:23
by Md. Emrul Kayesh,
Md. Abdul Karim,
Yulu He,
Yasuhiro Shirai,
Masatoshi Yanagida,
Ashraful Islam
The primary challenges related to Sn-based perovskite solar cells (PSCs) are the inherent susceptibility of Sn2+ oxidation and the significant energy mismatch between the perovskite and electron transport layer (ETL). Doping of n-type polymer (N2200) into PCBM retards the Sn2+ oxidation and reduces the conduction band offset energy at the perovskite/ETL interface. This makes Sn-PSCs highly stable under operational conditions.
Abstract
Developing high-performance and stable Sn-based perovskite solar cells (PSCs) is difficult due to the inherent tendency of Sn2+ oxidation and, the huge energy mismatch between perovskite and Phenyl-C61-butyric acid methyl ester (PCBM), a frequently employed electron transport layer (ETL). This study demonstrates that perovskite surface defects can be passivated and PCBM's electrical properties improved by doping n-type polymer N2200 into PCBM. The doping of PCBM with N2200 results in enhanced band alignment and improved electrical properties of PCBM. The presence of electron-donating atoms such as S, and O in N2200, effectively coordinates with free Sn2+ to prevent further oxidation. The doping of PCBM with N2200 offers a reduced conduction band offset (from 0.38 to 0.21 eV) at the interface between the ETL and perovskite. As a result, the N2200 doped PCBM-based PSCs show an enhanced open circuit voltage of 0.79 V with impressive power conversion efficiency (PCE) of 12.98% (certified PCE 11.95%). Significantly, the N2200 doped PCBM-based PSCs exhibited exceptional stability and retained above 90% of their initial PCE when subjected to continuous illumination at maximum power point tracking for 1000 h under one sun.
25 Oct 02:22
by Luca Gregori,
Daniele Meggiolaro,
Filippo De Angelis
The efficiency of tin iodide perovskite solar cells is severely limited by the native self p-doping. Here, based on density functional theory calculations, it is demonstrated that combining trivalent ion-doping with bromide alloying effectively decreases the hole background density and the density of deep traps, by providing useful guidelines to experimentalists for improving the optoelectronic quality of these materials.
Abstract
Tin-halide perovskites (THP) are emerging materials for photovoltaics with optoelectronic properties potentially rivaling lead-based analoges. Their efficiencies in solar cells are, however, severely limited by the high sensitivity of tin to oxygen and the heavy p-doping natively present in the material. While the effects of oxygen can be mitigated by using reducing agents upon the synthesis and by encapsulating the device, the native p-doping caused by the high density of acceptor defects remains a challenge to be further addressed for prolonging carrier lifetimes and, consequently, device efficiency. In this work, potential compositional engineering strategies aimed at reducing the p-doping of this class of materials and increasing their efficiency in solar cells are investigated. Based on density functional theory simulations it is demonstrated that THP doping with d1s2 trivalent ions effectively decreases the hole background density and the density of the deep defects responsible for the non-radiative recombination in these materials. This effect is enhanced by alloying iodide with small fractions of bromide, up to 33%. Higher bromide fractions, instead, are detrimental due to the increased non-radiative recombination. These results may provide useful guidelines to experimentalists for improving the optoelectronic quality of THPs and consequently of the ensuing devices.
24 Oct 07:02
by Feng Chen, Xiaojuan Lv, Daiki Kuzuhara, Tao Zhang, Jianming Pan, Fengxian Qiu, Toshiharu Teranishi, and Songlin Xue
Inorganic Chemistry
DOI: 10.1021/acs.inorgchem.4c02924
24 Oct 07:00
by Yapeng Sun,
Jiankai Zhang,
Bo Yu,
Huangzhong Yu
The PbS interconnect layer is constructed to optimize lattice and energy level mismatch problems between SnO2 and buried perovskite, which achieves a high efficiency of 24.24%.
Abstract
In n-i-p type perovskite solar cells (PSCs), mismatches in energy level and lattice at the buried interface is highly detrimental to device performance. Here, thin PbS interconnect layer in situ coating on the SnO2 surface is grown. The function of PbS at the interface is different from the commonly used function of crystalline seeds in perovskite bulk. The theoretical calculation show that it helps construct an interconnect structure of SnO2/PbS/Perovskite with matched energy level and lattice. This not only increases conductivity of SnO2, but also upshifts Fermi energy levels (E
F) of both SnO2 and buried perovskite due to charge transfer and perovskite's internal defect changes. Such a suitable energy level arrangement ensures a better energy level match at the interface, favoring efficient charge transfer and less open circuit voltage (V
oc) loss. Additionally, in situ PL reveals that the template effect of PbS enable perovskite grain to grow bottom-up because of their highly matched lattice parameters. This growth mode optimizes buried interface contact and crystallinity of perovskite. Ultimately, after PbS modification, a remarkable power conversion efficiency (PCE) exceeding 24% and better device stability are obtained. This work demonstrates an effective interconnect layers strategy to realize ideal interface contact toward high-performance PSCs.
24 Oct 06:59
by Arvind Kumar Jaiswal, Ajay Kishor Kushawaha, Sarita Katiyar, Alisha Ansari, Hemlata Bhatt, Ruchir Kant, and Koneni V. Sashidhara
The Journal of Organic Chemistry
DOI: 10.1021/acs.joc.4c01936
24 Oct 06:58
by W. Felix Zhu, Hanna M. Franz, Andreas Krämer, Emre Duman, Claire Empel, Michael W. Göbel, Rene M. Koenigs, Stefan Knapp, Kerstin Hiesinger, Ewgenij Proschak, and Victor Hernandez-Olmos
The Journal of Organic Chemistry
DOI: 10.1021/acs.joc.4c01622
24 Oct 06:58
by Zhaoyang Chen,
Jiakang Zhang,
Zilong Chen,
Ze‐Fan Yao,
Kai‐Kai Liu,
Zhongmin Zhou,
Haichang Zhang,
Maning Liu
A new carbazole-based halo (iodine)-functional small molecule (O1) is successfully synthesized and employed as a hole-transport material (HTM) in inverted perovskite solar cells. Compared to the reference O2 HTM without any halo-function, the strong interaction between O1 and perovskite, i.e., I···I- halogen bonding, leads to a big increase by 114 mV in the open-circuit voltage of corresponding devices.
Abstract
Interfacial properties of a hole-transport material (HTM) and a perovskite layer are of high importance, which can influence the interfacial charge transfer dynamics as well as the growth of perovskite bulk crystals particularly in inverted structure. The halogen bonding (XB) has been recognized as a powerful functional group to be integrated with new small molecule HTMs. Herein, a carbazole-based halo (iodine)-functional HTM (O1), is synthesized for the first time, demonstrating a high hole mobility and suitable energy levels that align well with those of perovskites. The strong interaction between O1 and perovskite, i.e., I···I−, induces the formation of an ordered interlayer, which are verified by both theoretical and experimental studies. Compared to the reference HTM (O2) without any halo-function, the XB-induced interlayer effectively enhances the interfacial charge extraction efficiency, while significantly hindering the non-radiative charge recombination by reducing the surface traps upon the strong passivation effect. This is reflected as a big increase in the open-circuit voltage by up to 114 mV in the fabrication of inverted devices with the highest power conversion efficiency of 22.34%. Moreover, the ordered XB-driven interlayer at the interface of O1 and perovskite is mainly responsible for the extended lifespan under the operational conditions.
24 Oct 06:57
by Jianbo Liu,
Jingwen Cao,
Meng Zhang,
Xiaoran Sun,
Tian Hou,
Xiangyu Yang,
Linhu Xiang,
Xin Liu,
Zhipeng Fu,
Yuelong Huang,
Feng Wang,
Wenhua Zhang,
Xiaojing Hao
With a stable 2-imidazolidinone-coordinated intermediate adduct regulating the growth of perovskite, pure α phase formamidinium lead iodide films are fabricated by blade-coating in ambient air from a simple ink without any additives containing methylammonium caesium, bromide and chloride ions.
Abstract
The α-c (α-FAPbI3) has been extensively employed in the fabrication of high-efficiency perovskite solar cells, yet heavily relied on multiple additives in upscalable fabrication in air. In this work, a simple α-FAPbI3 ink is developed for the blade-coating fabrication of phase-pure α-FAPbI3 in ambient air free from any additives containing extrinsic ions. The introduction of 2-imidazolidinone (IMD) to the FAPbI3 precursor inks leads to the formation of intermediate phases that change the phase transition pathway from δ-FAPbI3 to α-FAPbI3 by tilting the PbI6 octahedrons with strong coordination to Pb2+. Furthermore, the IMD ligands in the intermediate phase gradually escape from the perovskite film during the annealing, leaving a phase-pure α-FAPbI3 film vertically grown with large grains. Consequently, the small-sized PSCs fabricated with blade-coated α-FAPbI3 film achieve an efficiency of up to 23.14%, and the corresponding mini-module yields an efficiency of 19.66%. The device performance is among the highest reported for phase-pure α-FAPbI3 PSCs fabricated in the air without non-native cations or chloride additives, offering a simple and robust fabrication approach of phase-pure α-FAPbI3 films for PV application.
24 Oct 06:55
by Yekitwork Abebe Temitmie, Muhammad Irfan Haider, Daniele T. Cuzzupè, Lucia V. Mercaldo, Stefan Kraner, Paola Delli Veneri, Amare Benor, Azhar Fakharuddin, and Lukas Schmidt-Mende
ACS Materials Letters
DOI: 10.1021/acsmaterialslett.4c01699
24 Oct 06:54
by Isabella A. Kalluvila Justin, David O. Tiede, Manuel Piot, Michele Forzatti, Cristina Roldán-Carmona, Juan F. Galisteo-López, Hernán Míguez, and Henk J. Bolink
ACS Applied Materials & Interfaces
DOI: 10.1021/acsami.4c13434
24 Oct 06:36
by Dingqin Hu,
Hua Tang,
Chen Chen,
Duu‐Jong Lee,
Shirong Lu,
Gang Li,
Hsien‐Yi Hsu,
Frédéric Laquai
This work provides a comprehensive summary of significant breakthroughs and pivotal contributions of emerging solid additives (SAs), focusing on their roles in governing film-forming dynamics, stabilizing phase separation, and addressing other crucial aspects. These insights contribute to the development of rationale and design rules for SAs enabling highly efficient and stable organic solar cells (OSCs), thereby enhancing their commercial viability.
Abstract
Solution-processed bulk heterojunction (BHJ) organic solar cells (OSCs) have emerged as a promising next-generation photovoltaic technology. In this emerging field, there is a growing trend of employing solid additives (SAs) to fine-tune the BHJ morphology and unlock the full potential of OSCs. SA engineering offers several significant benefits for commercialization, including the ability to i) control film-forming kinetics to expedite high-throughput fabrication, ii) leverage weak noncovalent interactions between SA and BHJ materials to enhance the efficiency and stability of OSCs, and iii) simplify procedures to facilitate cost-effective production and scaling-up. These features make SA engineering a key catalyst for accelerating the development of OSCs. Recent breakthroughs have shown that SA engineering can achieve an efficiency of 19.67% in single-junction OSCs, demonstrating its effectiveness in promoting the commercialization of organic photovoltaic devices. This review provides a comprehensive overview of significant breakthroughs and pivotal contributions of emerging SAs, focusing on their roles in governing film-forming dynamics, stabilizing phase separation, and addressing other crucial aspects. The rationale and design rules for SAs in highly efficient and stable OSCs are also discussed. Finally, the remaining challenges are summarized, and perspectives on future advances in SA engineering are offered.
24 Oct 06:36
by Zhenhan Wang,
Zhaoyang Han,
Xinbo Chu,
Haitao Zhou,
Shiqi Yu,
Qian Zhang,
Zhuang Xiong,
Zihan Qu,
Hongbo Tian,
Wei Wang,
Fang Wan,
Yongbo Yuan,
Yun Lin,
Yingguo Yang,
Xingwang Zhang,
Qi Jiang,
Jingbi You
Rubidium thiocyanate as additive is incorporated in 1.66 eV bandgap perovskites to regulate film crystallization, significantly reduced device hysteresis, non-radiative recombination, ion-migration, and phase segregation. The perovskite solar cell achieved state-of-art 1.3 V V
OC and 24.3% efficiency, with T80 lifetime of 944 h under 1 sun/65°C. After integrating with flat silicon subcell, 30% efficiency is obtained for silicon/perovskite tandem device.
Abstract
Developing high-quality wide bandgap (WBG) perovskites with ≈1.7 eV bandgap (E
g) is critical to couple with silicon and create efficient silicon/perovskite tandem devices. The sufferings of large open-circuit voltage (V
OC) loss and unstable power output under operation continuously highlight the criticality to fully develop high-quality WBG perovskite films. In this study, rubidium and thiocyanate as additive regulators in WBG perovskites are incorporated, significantly reducing non-radiative recombination, ion-migration, and phase segregation. The optimized 1.66 eV E
g perovskite solar cells achieved state-of-art 1.3 V V
OC (0.36 V deficit), and delivered a stabilized power conversion efficiency of 24.3%, along with good device stability (20% degradation (T80) after over 994 h of operation under 1 sun at ≈65°C). When integrated with a flat front side silicon cell, silicon/perovskite two-terminal tandem device (30% efficient) is obtained with a 1.97 V V
OC, and T90 operational lifetime of more than 600 h at room temperature.
24 Oct 06:33
J. Mater. Chem. C, 2024, 12,19274-19280
DOI: 10.1039/D4TC03534H, Paper
Yuhui Chen, Takeshi Sano, Hisahiro Sasabe, Ryo Sugiyama, Amane Matsunaga, Hiroki Sato, Hiroshi Katagiri, Junji Kido
We developed a non-Phen electron-transporter named DPmPy-BP. With Ag as an air-stable EIL, DPmPy-BP exhibited superior electron-injection, achieving EQE of 20% and LT50 of 17 000 h at 1000 cd m−2, outperforming the corresponding Phen/Ag device.
The content of this RSS Feed (c) The Royal Society of Chemistry
24 Oct 06:33
J. Mater. Chem. C, 2024, Advance Article
DOI: 10.1039/D4TC03741C, Paper
Ruiying Lin, Shichu Peng, Zhenyu Luo, Jiaxin Wu, Yaocheng Jin, Yanping Huo, Liangang Xiao, Yonggang Min
In the advancement of organic solar cells (OSCs), the ternary strategy has emerged as an effective approach for fabricating devices with high photovoltaic performance.
To cite this article before page numbers are assigned, use the DOI form of citation above.
The content of this RSS Feed (c) The Royal Society of Chemistry
24 Oct 06:31
Energy Environ. Sci., 2024, Advance Article
DOI: 10.1039/D4EE03956D, Perspective
Open Access
Xueyu Tian, Samuel D. Stranks, Jinsong Huang, Vasilis M. Fthenakis, Yang Yang, Fengqi You
We propose a multi-scale analytics and modeling framework to fill the gap in integrating circular solar economy principles with ecosystem and climate commitments, enabling a holistic sustainability analysis of perovskite PVs.
To cite this article before page numbers are assigned, use the DOI form of citation above.
The content of this RSS Feed (c) The Royal Society of Chemistry
24 Oct 06:31
Energy Environ. Sci., 2024, 17,9215-9232
DOI: 10.1039/D4EE03623A, Paper
Open Access
Richard Adam Pacalaj, Yifan Dong, Ivan Ramirez, Roderick C. I. MacKenzie, Seyed Mehrdad Hosseini, Eva Bittrich, Julian Eliah Heger, Pascal Kaienburg, Subhrangsu Mukherjee, Jiaying Wu, Moritz Riede, Harald Ade, Peter Müller-Buschbaum, Martin Pfeiffer, James Robert Durrant
Substrate heating during co-evaporation of bulk heterojunction organic solar cells aids phase separation and improves performance. While recombination remains unaffected, hole transport improves due to more crystalline donor domains.
The content of this RSS Feed (c) The Royal Society of Chemistry
23 Oct 05:38
by Lei Han, Qian Wang, Ying Lu, Sheng Tao, Wenxuan Zhu, Xiaoyu Feng, Shixuan Liang, Hua Bai, Chong Chen, Kai Wang, Zhou Yang, Xiaolong Fan, Cheng Song, and Feng Pan
ACS Nano
DOI: 10.1021/acsnano.4c09413
23 Oct 05:32
by Ziyi Li, Anxin Sun, Congcong Tian, Rongshan Zhuang, Yiting Zheng, Xiling Wu, Beilin Ouyang, Jiajun Du, Jingyu Cai, Jinling Chen, Teng Xue, Ran Li, Tiantian Cen, Yuyang Zhao, Kaibo Zhao, Qianwen Chen, and Chun-Chao Chen
ACS Energy Letters
DOI: 10.1021/acsenergylett.4c02220
23 Oct 05:27
by Junhong Tan,
Jin Zhang,
Hao Sun,
Kaixing Chen,
Xing Gao,
Ping Zhang,
Cheng Zhong,
Fei Wu,
Zhong'an Li,
Linna Zhu
Intermolecular non-covalent interactions improve the planarity of the central moiety of DCT, resulting in a more densely packed molecular arrangement, and thus a high hole mobility. Devices based on dopant-free DCT exhibit a high efficiency of 22.50%, with excellent stability.
Abstract
Hole transport materials (HTMs) have a critical impact on the performance of perovskite solar cells (PSCs). Especially, the dopant-free HTMs could avoid the usage of hygroscopic dopants and reduce costs, which are important for device stability. Most of the current organic dopant-free HTMs are polycyclic aromatic hydrocarbons-based planar conjugated structures. Yet, the synthesis of conjugated fused heterocycles is often complicated. In this work, intramolecular non-covalent interaction is introduced to construct two organic HTMs (DCT and DTC), which can be facilely obtained through simple reactions. Compared to DTC with hexyl chain on the central benzene ring, DCT with hexyloxy chains shows better planarity in the core structure, as a result of the intramolecular non-covalent interactions between oxygen on hexyloxy and sulfur atom on the adjacent thiophene, as reflected from its single crystal structure. Moreover, DCT in a pristine state shows a decent hole mobility comparable to the doped Spiro-OMeTAD. Ultimately, conventional devices using dopant-free DCT as HTM show a high efficiency of 22.50%, with excellent long-term stability, and light and thermal stability. The results show that the noncovalent interaction is a useful and simple design strategy for dopant-free HTMs, that can effectively improve the efficiency and stability of PSCs.
23 Oct 05:26
by Clément Brouillac,
Fabien Lucas,
Denis Ari,
Christophe Lebreton,
Olivier Jeannin,
Joëlle Rault Berthelot,
Cassandre Quinton,
Emmanuel Jacques,
Cyril Poriel
A host material for Single-Layer Phosphorescent Organic Light-Emitting Diodes (SL-PhOLED) is reported, namely SPA-2-FDMB, using the dimesitylborane fragment as an acceptor unit. The yellow-emitting SL-PhOLED using SPA-2-FDMB as host presents an External Quantum Efficiency of 8.1% with a low threshold voltage of 2.6V.
Abstract
A new host material for Single-Layer Phosphorescent Organic Light-Emitting Diodes (SL-PhOLED) is reported, namely SPA-2-FDMB, using the dimesitylborane (DMB) fragment as an acceptor unit. The molecular design is constructed on the general donor-spiro-acceptor architecture, which consists of connecting, via a spiro bridge, a donor and an acceptor units in order to avoid strong interaction between them. The DMB fragment is known for many electronic applications (notably Aggregation-Induced Emission) but has not been used yet for SL-PhOLED applications. This appears particularly interesting, as the development of this simplified technology has shown that only a few electron-accepting fragments such as diphenylphosphine oxide can provide high-performance devices. Herein, the yellow-emitting SL-PhOLED using SPA-2-FDMB as host presents an External Quantum Efficiency of 8.1% (Current Efficiency of 24.9 cd.A−1) with a low threshold voltage of 2.6 V. As SPA-2-FDMB presents a sharp HOMO/LUMO difference, the good matching of HOMO and LUMO energy levels with the Fermi level of the electrodes is responsible for these performances. The low LUMO level of −2.61 eV also appears particularly important. These performances are, to date, the highest reported for a yellow/orange-emitting SL-PhOLED and show the potential of DMB unit in the single-layer technology.
23 Oct 04:59
by Stepan Kutsiy, Dmytro Volyniuk, Smruti Ranjan Sahoo, Magdalena Ceborska, Agnieszka Wisniewska, Pavlo Stakhira, Juozas Vidas Grazulevicius, Glib V. Baryshnikov, and Mykhaylo A. Potopnyk
ACS Applied Materials & Interfaces
DOI: 10.1021/acsami.4c12662
23 Oct 04:54
by Jian Wang,
Shanshan Yu,
Handong Jin,
Yu Li,
Kai Zhang,
David Lee Phillips,
Shihe Yang
Thick and compact CsPbBr3 film is prepared with a nonstoichiometric approach by capitalizing on the presence of excess volatile PbBr2 that induces melting point depression and promotes recrystallization of CsPbBr3 at a temperature much lower than its melting point. The corresponding flat-panel X-ray detector realizes high-quality real-time dynamic imaging without any motion artifact, suggesting its high application potential.
Abstract
Inorganic CsPbBr3 perovskite emerges as a promising material for the development of next-generation X-ray detectors. However, the formation of a high-quality thick film of CsPbBr3 has been challenging due to the low solubility of its precursor and its high melting point. To address this limitation, a nonstoichiometry approach is taken that allows lower-temperature crystallization of the target perovskite under the solventless condition. This approach capitalizes on the presence of excess volatile PbBr2 within the CsPbBr3 film, which induces melting point depression and promotes recrystallization of CsPbBr3 at a temperature much lower than its melting point concomitant with the escape of PbBr2. Consequently, thick and compact films of CsPbBr3 are formed with grains ten times larger than those in the pristine films. The resulting X-ray detector exhibits a remarkable sensitivity of 4.2 × 104 µC Gyair
−1 cm−2 and a low detection limit of 136 nGyair s−1, along with exceptional operational stability. Notably, the CsPbBr3-based flat-panel detector achieves a high resolution of 0.65 lp pix−1 and the first demonstration of real-time dynamic X-ray imaging for perovskite-based devices.
23 Oct 04:43
by Binhe Li,
Yang Li,
Wei Yuan,
Xiangpeng Zhang,
Sheng Tao,
Hongmei Zhan,
Zhi‐gang Yu,
Kai Wang,
Jun liu,
Lixiang Wang,
Chuanjiang Qin
Single-junction spin-LEDs based on (R/S-MBA)₂FA₂Pb₃Br₁₀ as the recombination and emission center achieved optimal CP-EL and EQE values of 4.98% and 15.42%, respectively. The emission-chiral vertical structure of these perovskites significantly contributes to the high CP-EL. Notably, effective CISOC and CISS effects are observed, with a spin carrier lifetime of 20 ps and a spin filtering efficiency of 87.05%.
Abstract
Low temperature solution-processible chiral metal halide perovskites, which posse the innately chiral-induced spin orbit coupling (CISOC), are valuable for the realization of room temperature single junctions-based spin-light-emitting diodes (spin-LEDs), without involving integrated optics and ferromagnetic electrodes. The current challenging primarily lies on the development of high-performance spin-LEDs and the demonstration of the chiral-induced spin selectivity (CISS). Herein, chiral organic cation based quasi-2D perovskite films with prominently circularly polarized luminescence and bright emissions are fabricated for the application of room-temperature spin-LEDs. A remarkable external quantum efficiency (EQE) of 15.42% and circularly polarized electroluminescence (CP-EL) of 4.98% are well achieved in ambient condition. With studies of spin-related exciton states and magneto-photoluminescence (magneto-PL), the spin-lifetime (τs) is estimated to be 20 ps. This work has greatly promoted the present growth for the high-performance chiral perovskites spin-LEDs.
23 Oct 03:04
J. Mater. Chem. C, 2024, Advance Article
DOI: 10.1039/D4TC00805G, Paper
Yajie Meng, Xi Chen, Yingqi Li, Yunlong Shang, Yulin Guo, Yong Wu, Haiyan Wei, Jiawei Xu
OLPL can be observed by doping TADF guest molecules into specific host materials, the mechanism of which is revealed using theoretical investigation.
To cite this article before page numbers are assigned, use the DOI form of citation above.
The content of this RSS Feed (c) The Royal Society of Chemistry
23 Oct 03:03
J. Mater. Chem. C, 2024, 12,19404-19411
DOI: 10.1039/D4TC03441D, Paper
Tsutomu Ishi-i, Misuzu Nakaya, Tomoya Umeki, Taisuke Matsumoto, Jun Hyeon Lee, Takuma Yasuda
Enhanced NIR phosphorescence emission in the longer-wavelength region can be produced from a highly ordered host–guest aggregate structure arising from the same crystal packing pattern of the host and guest molecules with structural similarity.
The content of this RSS Feed (c) The Royal Society of Chemistry
23 Oct 03:03
J. Mater. Chem. C, 2024, Advance Article
DOI: 10.1039/D4TC02651A, Paper
Open Access
Savita, Adarash Kumar Shukla, Anupam Bhattacharya
This work highlights the unique proton transfer ability observed in cyanoquinoxaline N-oxide-based fluorophores and its use in water detection.
To cite this article before page numbers are assigned, use the DOI form of citation above.
The content of this RSS Feed (c) The Royal Society of Chemistry
23 Oct 02:50
J. Mater. Chem. A, 2024, 12,31291-31300
DOI: 10.1039/D4TA06018K, Paper
Open Access
Konstantina Gkini, Spyros Orfanoudakis, Filippos Harlaftis, Panagiotis Dallas, Christos Kouzios, Polychronis Tsipas, Athanassios G. Kontos, Maria Konstantakou, Thomas Stergiopoulos
Bis(trifluoromethane)sulfonimide (TFSI) treatment passivates the undercoordinated Pb2+ and iodide vacancies at the perovskite surface through its sulfonyl groups.
The content of this RSS Feed (c) The Royal Society of Chemistry
23 Oct 02:50
Energy Environ. Sci., 2024, 17,9268-9277
DOI: 10.1039/D4EE04248D, Paper
Yang Ding, Erming Feng, Siyuan Lu, Jianhui Chang, Caoyu Long, Sichao Tong, Hengyue Li, Junliang Yang
A surface micro-etching and reconstruction strategy is developed to regulate the stresses in a perovskite film, achieving a benign transition from tensile stress to compressive stress.
The content of this RSS Feed (c) The Royal Society of Chemistry
22 Oct 02:52
by Hao Zhu, Chao Wang, Yanping Mo, Dehong Chen, Bofei Xue, and Fuzhi Huang
ACS Applied Materials & Interfaces
DOI: 10.1021/acsami.4c14684
