10 Dec 10:03
by Mingxing Li, Ling Li, Rupam Mukherjee, Kai Wang, Qing Liu, Qiang Zou, Hengxing Xu, Jeremy Tisdale, Zheng Gai, Ilia N. Ivanov, David Mandrus, Bin Hu
The spin on a ferromagnetic Co surface can interact with the asymmetric orbital on an organometal halide perovskite surface, leading to an anisotropic magnetodielectric effect. This study presents an opportunity to integrate ferromagnetic and semiconducting properties through the Rasbha effect for achieving spin-dependent electronic functionalities based on thin-film design.
10 Dec 09:49
by Yuwei Duan, Xiaopeng Xu, He Yan, Wenlin Wu, Zuojia Li, Qiang Peng
A novel-small molecular acceptor with electron-deficient 1,3,5-triazine as the core and perylene diimides as the arms is developed as the acceptor material for efficient bulk heterojunction organic solar cells with an efficiency of 9.15%.
10 Dec 09:49
by Yuze Lin, Liang Shen, Jun Dai, Yehao Deng, Yang Wu, Yang Bai, Xiaopeng Zheng, Jiayu Wang, Yanjun Fang, Haotong Wei, Wei Ma, Xiao Cheng Zeng, Xiaowei Zhan, Jinsong Huang
A π-conjugated Lewis base is introduced into perovskite solar cells, namely, indacenodithiophene end-capped with 1.1-dicyanomethylene-3-indanone (IDIC), as a multifunctional interlayer, which combines efficient trap-passivation and electron-extraction. Perovskite solar cells with IDIC layers yield higher photovoltages and photocurrents, and 45% enhanced efficiency compared with control devices without IDIC.
10 Dec 09:49
by Shangshang Chen, Guangye Zhang, Jing Liu, Huatong Yao, Jianquan Zhang, Tingxuan Ma, Zhengke Li, He Yan
The first homo-tandem non-fullerene organic solar cell enabled by a novel recombination layer which only requires a very mild thermal annealing treatment is reported. The best efficiency achieved is 10.8% with a Voc over 2.1 V, which is the highest Voc for double-junction organic solar cells reported to date.
10 Dec 04:41
Phys. Chem. Chem. Phys., 2016, Accepted Manuscript
DOI: 10.1039/C6CP07335B, Paper
Kai Miao, Mao Liang, Zhihui Wang, Chunyao Zhang, Zhe Sun, Song Xue
Thiophene derivatives, including thieno[3,2-b][1]benzothiophene (TBT), benzo[b]thiophene (BT), 2-phenylthieno[3,2-b]thiophene (PTT) and 2-phenylthiophene (PT), have been introduced as donor for construction triarylamine organic dyes (M52, M53, M56, M57 and M52A). The absorption,...
The content of this RSS Feed (c) The Royal Society of Chemistry
10 Dec 04:41
by Malgorzata Kot, Chittaranjan Das, Zhiping Wang, Karsten Henkel, Zied Rouissi, Konrad Wojciechowski, Henry J. Snaith, Dieter Schmeisser
Abstract
In this work, solar cells with a freshly made CH3NH3PbI3 perovskite film showed a power conversion efficiency (PCE) of 15.4 % whereas the one with 50 days aged perovskite film only 6.1 %. However, when the aged perovskite was covered with a layer of Al2O3 deposited by atomic layer deposition (ALD) at room temperature (RT), the PCE value was clearly enhanced. X-ray photoelectron spectroscopy study showed that the ALD precursors are chemically active only at the perovskite surface and passivate it. Moreover, the RT-ALD-Al2O3-covered perovskite films showed enhanced ambient air stability.
Protected perovskites: Improved perovskite film stability in ambient air and solar cell power conversion efficiency (PCE) are achieved by covering an aged perovskite film with a thin Al2O3 layer prepared by atomic layer deposition (ALD) at room temperature (RT). High-resolution X-ray photoelectron spectroscopy is used to understand the effect of the ALD precursors on the perovskite film properties.
10 Dec 04:40
by Yao-Xuan Chen, Qian-Qing Ge, Yang Shi, Jie Liu, Ding-Jiang Xue, Jing-Yuan Ma, Jie Ding, Hui-Juan Yan, Jin-Song Hu and Li-Jun Wan
Journal of the American Chemical Society
DOI: 10.1021/jacs.6b09388
07 Dec 07:43
Energy Environ. Sci., 2017, 10,216-224
DOI: 10.1039/C6EE02824A, Paper
Xiaoliang Zhang, Carl Hagglund, Erik M. J. Johansson
A semitransparent colloidal quantum dot solar cell with high efficiency, transparency and stability is reported by coupling numerical modeling and experimental approaches.
The content of this RSS Feed (c) The Royal Society of Chemistry
07 Dec 04:17
by Miaomiao Li
Nature Photonics.
doi:10.1038/nphoton.2016.240
Authors: Miaomiao Li, Ke Gao, Xiangjian Wan, Qian Zhang, Bin Kan, Ruoxi Xia, Feng Liu, Xuan Yang, Huanran Feng, Wang Ni, Yunchuang Wang, Jiajun Peng, Hongtao Zhang, Ziqi Liang, Hin-Lap Yip, Xiaobin Peng, Yong Cao & Yongsheng Chen
An effective way to improve the power conversion efficiency of organic solar cells is to use a tandem architecture consisting of two subcells, so that a broader part of the solar spectrum can be used and the thermalization loss of photon energy can be minimized. For a tandem cell to work well, it is important for the subcells to have complementary absorption characteristics and generate high and balanced (matched) currents. This requires a rather challenging effort to design and select suitable active materials for use in the subcells. Here, we report a high-performance solution-processed, tandem solar cell based on the small molecules DR3TSBDT and DPPEZnP-TBO, which offer efficient, complementary absorption when used as electron donor materials in the front and rear subcells, respectively. Optimized devices achieve a power conversion efficiency of 12.50% (verified 12.70%), which represents a new level of capability for solution-processed, organic solar cells.
07 Dec 04:17
by Hui-Seon Kim, Ja-Young Seo and Nam-Gyu Park
The Journal of Physical Chemistry C
DOI: 10.1021/acs.jpcc.6b09412
05 Dec 10:11
Publication date: 15 February 2017
Source:Journal of Power Sources, Volume 341
Author(s): Shan-Long Chen, Jie Tao, Hai-Bo Shu, Hai-Jun Tao, Yu-Xin Tang, Yi-Zhou Shen, Tao Wang, Lei Pan
The density-functional theory calculations in this work clearly revealed that the kuramite-structure Cu3SnS4 material possessing the metallic characteristic, result in the higher charge transfer between I3
− ions and the Cu3SnS4 surfaces, and the rapid redox transfer reaction of I3
−/I
− in dye-sensitized solar cells system. Then, a feasible and mild solution method was proposed to in-situ synthesize Cu-rich kuramite-structure Cu3SnS4 thin film on FTO substrate, and the acquired thin film was used directly as counter electrode to assemble dye-sensitized solar cells without any post-treatments. The obtained-Cu3SnS4 nanosheet film had good bonding strength, expanded surface area, low photoelectron charge transfer resistance at the counter electrode/electrolyte interface, and great catalytic activity toward the reduction of I3
−/I
− ions. Power conversion efficiency of 7.80% was obtained by utilizing Cu3SnS4 nanosheet as counter electrode, which was superior to that of Pt electrode (6.52%). Our results demonstrate the earth-abundant and low-cost kuramite Cu3SnS4 is an alternative Pt-free counter electrode material in dye-sensitized solar cells.
Graphical abstract
05 Dec 04:27
by Alexander S. Dudnik, Thomas J. Aldrich, Nicholas D. Eastham, Robert P. H. Chang, Antonio Facchetti and Tobin J. Marks
Journal of the American Chemical Society
DOI: 10.1021/jacs.6b10023
05 Dec 04:27
by Daniel Niesner, Haiming Zhu, Kiyoshi Miyata, Prakriti P. Joshi, Tyler. J. S. Evans, Bryan. J. Kudisch, M. Tuan Trinh, Manuel Marks and X.-Y. Zhu
Journal of the American Chemical Society
DOI: 10.1021/jacs.6b08880
05 Dec 04:25
Chem. Commun., 2016, Accepted Manuscript
DOI: 10.1039/C6CC09486D, Communication
Miaomiao Xue, Chen-Chao Huang, Yi Yuan, Ye-Xin Zhang, Man-Keung Fung, LS Liao
A new electron-withdrawing moiety (BFPz) is first used as an acceptor in OLED and its corresponding core unit (2-Br-BFPz) was synthesized. Combined with an electron-donating moiety triphenylamine, a novel fluorescent...
The content of this RSS Feed (c) The Royal Society of Chemistry
05 Dec 04:24
by Jianxiong Han, Youchun Chen, Weiping Chen, Chengzhuo Yu, Xiaoxian Song, Fenghong Li and Yue Wang
ACS Applied Materials & Interfaces
DOI: 10.1021/acsami.6b10900
05 Dec 04:24
by Youn Hwan Kim, Nadhila Sylvianti, Mutia Anissa Marsya, Juyun Park, Yong-Cheol Kang, Doo Kyung Moon and Joo Hyun Kim
ACS Applied Materials & Interfaces
DOI: 10.1021/acsami.6b08628
05 Dec 04:24
by Mukhamed L. Keshtov, Alexei R. Khokhlov, Serge A. Kuklin, Fang-Chung Chen, Emmanuel N. Koukaras and Ganesh D. Sharma
ACS Applied Materials & Interfaces
DOI: 10.1021/acsami.6b08802
05 Dec 04:23
by Chao Bao, Faxin Li, Jiali Wang, Panpan Sun, Niu Huang, Yihua Sun, Liang Fang, Lei Wang and Xiaohua Sun
ACS Applied Materials & Interfaces
DOI: 10.1021/acsami.6b10198
05 Dec 04:23
by Huajing Fang, Chao Xu, Jie Ding, Qiang Li, Jia-Lin Sun, Ji-Yan Dai, Tian-Ling Ren and Qingfeng Yan
ACS Applied Materials & Interfaces
DOI: 10.1021/acsami.6b10305
04 Dec 23:29
by Bomi Sim, Chang-Ki Moon, Kwon-Hyeon Kim and Jang-Joo Kim
ACS Applied Materials & Interfaces
DOI: 10.1021/acsami.6b10297
04 Dec 23:25
by Paul Gratia, Giulia Grancini, Jean-Nicolas Audinot, Xavier Jeanbourquin, Edoardo Mosconi, Iwan Zimmermann, David Dowsett, Yonghui Lee, Michael Grätzel, Filippo De Angelis, Kevin Sivula, Tom Wirtz and Mohammad Khaja Nazeeruddin
Journal of the American Chemical Society
DOI: 10.1021/jacs.6b10049
04 Dec 14:30
by Timothy J. Barr, Amanda J. Morris, Atefeh Taheri and Gerald J. Meyer
The Journal of Physical Chemistry C
DOI: 10.1021/acs.jpcc.6b09761
04 Dec 14:25
Phys. Chem. Chem. Phys., 2016, Accepted Manuscript
DOI: 10.1039/C6CP06709C, Paper
Lin Xie, Heewon Hwang, Minjung Kim, Kyungkon Kim
A ternary solvent system consisting of dimethyl sulfoxide (DMSO), [gamma]-butyrolactone (GBL) and N-Methyl-2-pyrrolidone (NMP) to improve the uniformity of CH3NH3PbI3 (MAPbI3) perovskite domains have been developed. Compared to MAPbI3 perovskite...
The content of this RSS Feed (c) The Royal Society of Chemistry
04 Dec 14:21
by Wei Liu, Cai-Jun Zheng, Kai Wang, Ming Zhang, Dong-Yang Chen, Si-Lu Tao, Fan Li, Yu-Ping Dong, Chun-Sing Lee, Xue-Mei Ou and Xiao-Hong Zhang
ACS Applied Materials & Interfaces
DOI: 10.1021/acsami.6b08546
04 Dec 14:19
by Tak H. Kim, Alan R. White, Joseph P. Sirdaarta, Wenyu Ji, Ian E. Cock, James St. John, Sue E. Boyd, Christopher L. Brown and Qin Li
ACS Applied Materials & Interfaces
DOI: 10.1021/acsami.6b12113
04 Dec 14:16
by Haijun Bin
11.4% Efficiency non-fullerene polymer solar cells with trialkylsilyl substituted 2D-conjugated polymer as donor
Nature Communications, Published online: 1 December 2016; doi:10.1038/ncomms13651
In organic photovoltaics, non-fullerene acceptors relax matching rules and allow for the development of new donor polymers. Here, Bin et al. design a donor polymer and obtain high photoconversion efficiencies despite the low energy offset for hole transfer between the acceptor and the donor.
04 Dec 14:14
Publication date: 1 February 2017
Source:Journal of Power Sources, Volume 340
Author(s): Milan Jana, Sanjit Saha, Pranab Samanta, Naresh Chandra Murmu, Nam Hoon Kim, Tapas Kuila, Joong Hee Lee
A facile, cost effective and additive-free successive ionic layer adsorption and reaction (SILAR) technique is demonstrated to develop layer-by-layer (LbL) assembly of reduced graphene oxide (RGO) and MnO2 (MnO2-RGOSILAR) on a stainless steel current collector, for designing light-weight and small size supercapacitor electrode. The transmission electron microscopy and field emission scanning electron microscopy images shows uniform distribution of RGO and MnO2 in the MnO2-RGOSILAR. The LbL (MnO2-RGOSILAR) demonstrates improved physical and electrochemical properties over the hydrothermally prepared MnO2-RGO (MnO2-RGOHydro). The electrochemical environment of MnO2-RGOSILAR is explained by constant phase element in the high frequency region, and a Warburg element in the low frequency region in the Z-View fitted Nyquist plot. The equivalent circuit of the MnO2-RGOHydro, displays the co-existence of EDL and constant phase element, indicating inhomogeneous distribution of MnO2 and RGO by the hydrothermal technique. An asymmetric supercapacitor device is designed with MnO2-RGOSILAR as positive electrode, and thermally reduced GO (TRGO) as negative electrode. The designed cell exhibits high energy density of ∼88 Wh kg
−1, elevated power density of ∼23,200 W kg
−1, and ∼79% retention in capacitance after 10,000 charge-discharge cycles.
Graphical abstract
04 Dec 14:14
by Kulbir K. Ghuman and Chandra V. Singh
The Journal of Physical Chemistry C
DOI: 10.1021/acs.jpcc.6b07326
04 Dec 14:13
by Joanna Jalkh, Yann R. Leroux, Antoine Vacher, Dominique Lorcy, Philippe Hapiot and Corinne Lagrost
The Journal of Physical Chemistry C
DOI: 10.1021/acs.jpcc.6b09459
04 Dec 14:10
Publication date: 15 February 2017
Source:Journal of Power Sources, Volume 341
Author(s): Chunqi Cai, Lanlan Zhai, Yahui Ma, Chao Zou, Lijie Zhang, Yun Yang, Shaoming Huang
Synthesis of quantum dots (QDs) with high photoluminescence is critical for quantum dot sensitized solar cells (QDSCs). A series of high quality AgInS2 QDs were synthesized under air circumstance by the organometallic high temperature method. Feature of tunable photoluminescence of AgInS2 QDs with long lifetime and quantum yields beyond 40% has been achieved, which was mainly attributed to the donor-acceptor pair recombination, contributed above 91% to the whole emission profiles. After ligand exchange with bifunctional linker, water-soluble AgInS2 QDs were adopted as light harvesters to fabricate QDSCs, achieved best PCE of 2.91% (short-circuit current density of 13.78 mA cm
−2, open-circuit voltage of 0.47 V, and fill factor of 45%) under one full sun illumination. The improved photovoltaic performance of AgInS2 QDs-based QDSCs is mainly originated from broadened optoelectronic response range up to ∼900 nm, and enhanced photoluminescence with long lifetime and high quantum yield beyond 40%, which provide strong photoresponse ∼40% over the window below 750 nm. The synthetic approach combined with intrinsic defects created by intentionally composition modulation introduces a new approach towards the goal of high performance QDSCs.
Graphical abstract
