penghuang
Shared posts
The C70 Fullerene Adducts with Low Anisotropy of Polarizability are More Efficient Electron Acceptors for Organic Solar Cells. The Minimum Anisotropy Hypothesis for Efficient Isomer-Free Fullerene-Adduct Photovoltaics
PbI2–HMPA Complex Pretreatment for Highly Reproducible and Efficient CH3NH3PbI3 Perovskite Solar Cells
Ruthenium Tetrazole Based Electroluminescent Device: Key Role of Counter Ions for Light Emission Properties
In-depth analysis of chloride treatments for thin-film CdTe solar cells
In-depth analysis of chloride treatments for thin-film CdTe solar cells
Nature Communications, Published online: 24 October 2016; doi:10.1038/ncomms13231
High performance CdTe thin film solar cells typically require a chloride activation treatment. Here, Major et al. show that the main effect of the most effective chloride-based treatments is chloride accumulation at grain boundaries and that it results in improved open circuit voltages.
Mapping the Competition between Exciton Dissociation and Charge Transport in Organic Solar Cells
Managing Excitons and Charges for High-Performance Fluorescent White Organic Light-Emitting Diodes
Semiconductor Polymer/Top Electrode Interface Generated by Two Deposition Methods and Its Influence on Organic Solar Cell Performance
UV-Induced Oxygen Removal for Photostable, High-Efficiency PTB7-Th:PC71BM Photovoltaic Cells
Transparent Indium Tin Oxide Electrodes on Muscovite Mica for High-Temperature-Processed Flexible Optoelectronic Devices
A Confined Fabrication of Perovskite Quantum Dots in Oriented MOF Thin Film
Effect of Aging and PCBM Content on Bulk Heterojunction Organic Solar Cells Studied by Intensity Modulated Photocurrent Spectroscopy
Coexistence of Two Electronic Nano-Phases on a CH3NH3PbI3–xClx Surface Observed in STM Measurements
Substoichiometric Molybdenum Sulfide Phases with Catalytically Active Basal Planes
Schottky barrier tuning of the single-layer MoS2 on magnetic metal substrates through vacancy defects and hydrogenation
DOI: 10.1039/C6CP05384J, Paper
The Schottky barrier and magnetism of the single-layer MoS2 on magnetic metal substrates can be tuned by atomic vacancy defects and hydrogenation.
The content of this RSS Feed (c) The Royal Society of Chemistry
Hot exciton cooling and multiple exciton generation in PbSe quantum dots
DOI: 10.1039/C6CP03790A, Paper
PbSe QDs show high multiple exciton generation (MEG) quantum yield. Here we have investigated the role of the [capital Sigma] transition in slowing down the hot exciton cooling, which can help MEG to take over phonon relaxation.
The content of this RSS Feed (c) The Royal Society of Chemistry
Specific cation interactions as the cause of slow dynamics and hysteresis in dye and perovskite solar cells: a small-perturbation study
DOI: 10.1039/C6CP05851E, Paper
Hysteresis is one of the most remarkable features of perovskite solar cells; however, it is also present in other kinds of devices such as dye-sensitized solar cells.
The content of this RSS Feed (c) The Royal Society of Chemistry
Monodisperse Formamidinium Lead Bromide Nanocrystals with Bright and Stable Green Photoluminescence
Covalently Functionalized SWCNTs as Tailored p-Type Dopants for Perovskite Solar Cells
Improved Internal Quantum Efficiency and Light-Extraction Efficiency of Organic Light-Emitting Diodes via Synergistic Doping with Au and Ag Nanoparticles
Inkjet-Printed Graphene/PEDOT:PSS Temperature Sensors on a Skin-Conformable Polyurethane Substrate
Inkjet-Printed Graphene/PEDOT:PSS Temperature Sensors on a Skin-Conformable Polyurethane Substrate
Scientific Reports, Published online: 18 October 2016; doi:10.1038/srep35289
Large Planar π-Conjugated Porphyrin for Interfacial Engineering in p-i-n Perovskite Solar Cells
Layered and Pb-Free Organic–Inorganic Perovskite Materials for Ultraviolet Photoresponse: (010)-Oriented (CH3NH3)2MnCl4 Thin Film
Doping ZnO with Water/Alcohol-Soluble Small Molecules as Electron Transport Layers for Inverted Polymer Solar Cells
Band Alignment for Rectification and Tunneling Effects in Al2O3 Atomic-Layer-Deposited on Back Contact for CdTe Solar Cell
Ultrafast ion migration in hybrid perovskite polycrystalline thin films under light and suppression in single crystals
DOI: 10.1039/C6CP06496E, Paper
This study reveals the important effect of light on ion migration behavior and morphology dependent light stability.
The content of this RSS Feed (c) The Royal Society of Chemistry
Using o-Chlorobenzaldehyde as a Fast Removable Solvent Additive during Spin-Coating PTB7-Based Active Layers: High Efficiency Thick-Film Polymer Solar Cells
o-Chlorobenzaldehyde (CBA) is a derivative of chlorobenzene (CB). The boiling point of CBA is 212 °C, much lower than 332 °C for 1,8-diiodooctane (DIO). With CBA as solvent additive in CB host solvent, CBA could be fast removed during spin-coating 100, 200, and 300 nm thick thieno[3,4-b]thiophene/benzodithiophene polymer (PTB7):[6,6]-phenyl C71-butyric acid methyl ester (PC71BM) active layers, achieving power conversion efficiencies of 9.11%, 8.24%, and 7.11%, respectively, much higher than 7.53%, 5.71%, and 4.93% for corresponding DIO control devices with vacuum drying.
Solar Cells: Investigation of Charge Carrier Behavior in High Performance Ternary Blend Polymer Solar Cells (Adv. Energy Mater. 19/2016)
In article number 1600637, Alan J. Heeger, Han Young Woo, Jin Young Kim, and co-workers demonstrate high performance ternary blend polymer solar cells including two donor polymers which share the same polymeric backbone. Real charge carrier behavior of ternary blends is firstly clarified via transient absorption spectroscopy as parallel bulk-heterojunction.
Solar Cells: Morphological Degradation in Low Bandgap Polymer Solar Cells – An In Operando Study (Adv. Energy Mater. 19/2016)
Using small amounts of solvent additives during fabrication of organic solar cells has been formerly shown to render a facile approach for improving the performance by tuning the active layer nano-morphology. However, in certain cases, solvent additives are now found to accelerate device degradation. This is reported by Peter Müller-Buschbaum and co-workers in article number 1600712. Cover image by Christoph Hohmann, Nano-systems Initiative Munich (NIM).
Transparent conducting oxide-free nitrogen-doped graphene/reduced hydroxylated carbon nanotube composite paper as flexible counter electrodes for dye-sensitized solar cells
Source:Journal of Power Sources, Volume 334
Author(s): Jindan Zhang, Mei Yu, Songmei Li, Yanbing Meng, Xueke Wu, Jianhua Liu
Three-dimensional nitrogen-doped graphene/reduced hydroxylated carbon nanotube composite aerogel (NG/CNT-OH) with unique hierarchical porosity and mechanical stability is developed through a two-step hydrothermal reaction. With plenty of exposed active sites and efficient multidimensional transport pathways of electrons and ions, NG/CNT-OH exhibits great electrocatalytic performances for I−/I3 − redox couple. The subsequent compressed NG/CNT-OH papers possess high electrical conductivity and good flexibility, thus generating high-performance flexible counter electrodes (CEs) with transparent conducting oxide free (TCO-free) for dye-sensitized solar cells (DSSCs). The flexible NG/CNT-OH electrodes show good stability and the DSSCs with the optimized NG/CNT-OH CE had higher short-circuit current density (13.62 mA cm−2) and cell efficiency (6.36%) than DSSCs using Pt CE, whereas those of the DSSCs using Pt CE were only 12.81 mA cm−2 and 5.74%, respectively. Increasing the ratio of hydroxylated carbon nanotubes (CNT-OH) to the graphene oxide (GO) in the reactant would lead to less content of doped N, but better diffusion of electrolyte in the CEs because of more complete GO etching reaction. The design strategy presents a facile and cost effective way to synthesis three-dimensional graphene/CNT composite aerogel with excellent performance, and it can be potentially used as flexible TCO-free CE in other power conversion or energy storage devices.