Results 81 to 90 of about 58,832 (346)

Charge separation in organic photovoltaic cells [PDF]

Organic Electronics, 2014
We consider a simple model for the geminate electron-hole separation process in organic photovoltaic cells, in order to illustrate the influence of dimensionality of conducting channels on the efficiency of the process. The Miller-Abrahams expression for the transition rates between nearest neighbor sites was used for simulating random walks of the ...
Giazitzidis, Paraskevas, Argyrakis, Panos, Bisquert, Juan, Vikhrenko, Vyacheslav S.   +3 more
openaire   +3 more sources

Understanding and Addressing the Performance Asymmetry Issue in Semitransparent Laminated Organic Photovoltaic Devices

Advanced Functional Materials, EarlyView.
This work addresses the challenge of current–voltage asymmetry in scalable laminated semitransparent organic photovoltaics (OPVs) for indoor applications. Vertical stratification of materials is shown to create an energy barrier, leading to performance differences under different illumination directions.
Gulzada Beket, Anton Zubayer, Leonie Pap, Huagui Lai, Samiran Bairagi, Nakul Jain, Jochen Stahn, Fan Fu, Kenneth Järrendahl, Fredrik Eriksson, Xabier Rodríguez‐Martínez, Olle Inganäs, Uli Würfel, Thomas Österberg, Jonas Bergqvist, Feng Gao   +15 more
wiley   +1 more source

Tailoring the Microstructure of B‐Cation Octahedra in Halide Double Perovskites for Efficient Selective CO2‐to‐CO Photoreduction

Advanced Functional Materials, EarlyView.
The thermodynamic obstacle of CO2‐to‐CO conversion over metal halide perovskite photocatalysts is addressed by modulating the local electronic structure. A 13‐fold improvement in selective CO2 photoreduction to CO is achieved, with ≈100% selectivity.
Chunhua Wang, Wenjing Shen, Zhirun Xie, Yannan Wang, Yang Ding, Ning Han, Michael K.H. Leung, Biao Liu, Zhi Zhu, Yun Hau Ng   +9 more
wiley   +1 more source

Bistable Amphoteric Native Defect Model of Perovskite Photovoltaics

, 2018
The past few years have witnessed unprecedented rapid improvement of the performance of a new class of photovoltaics based on halide perovskites. This progress has been achieved even though there is no generally accepted mechanism of the operation of ...
Asta, M. D., Broberg, D., Han, G., Jaquez, M., Mathews, N., Rey-Stolle, I., Sherburne, M, Walukiewicz, W., Xie, W.   +8 more
core   +2 more sources

1D Light‐Emitting MAPbBr3 Perovskite Encapsulated in Carbon Nanotubes

Advanced Functional Materials, EarlyView.
Encapsulation of MAPbBr3 perovskite in single‐walled carbon nanotubes (SWCNTs) yields a hybrid nanomaterial with distinctive optoelectronic properties. Perovskite confinement induces a unified single‐peak photoluminescence (PL) with a reduced lifetime, while charge transfer alters the optical properties of nanotubes.
Valentina A. Eremina, Timofei Eremin, Hua Jiang, Rakesh Dhama, Jokotadeola Odutola, Humeyra Caglayan, Nikolai V. Tkachenko, Petr A. Obraztsov   +7 more
wiley   +1 more source

Multicomponent organic blend systems: A review of quaternary organic photovoltaics

Carbon Energy
Embedding a third and/or fourth component into a binary blend active layer of organic photovoltaics (OPVs) is a promising approach to achieve high‐performance photovoltaic cells and modules.
Kekeli N'Konou, Souk Y. Kim, Nutifafa Y. Doumon   +2 more
doaj   +1 more source

Experimental Analysis of the Potential Induced Degradation Effect on Organic Solar Cells

International Journal of Photoenergy, 2017
Renewable energy applications are increasing daily, and solar electricity, in the form of photovoltaics, is getting more and more important worldwide.
S. C. Akcaoğlu, G. Martinopoulos, C. Zafer   +2 more
doaj   +1 more source

Building Solar Cells from Nanocrystal Inks

Applied Sciences, 2019
The use of solution-processed photovoltaics is a low cost, low material-consuming way to harvest abundant solar energy. Organic semiconductors based on perovskite or colloidal quantum dot photovoltaics have been well developed in recent years; however ...
Kaiying Luo, Wanhua Wu, Sihang Xie, Yasi Jiang, Shengzu Liao, Donghuan Qin   +5 more
doaj   +1 more source

Efficient Hole Injection From Indium Tin Oxide in Quantum‐Dot Light‐Emitting Diodes

Advanced Functional Materials, EarlyView.
The realization of QLEDs‐based displays remains challenging due to the acidic surface from PEDOT:PSS. Here, an analysis is conducted by examining the degradation mechanism of PEDOT:PSS. By replacing PEDOT:PSS with 2BrCzPA, the formation of strong dipoles at the ITO/2BrCzPA SAM interfaces exhibits excellent hole injection abilities.
PeiLi Gao, Jing Jiang, Yin‐Man Song, Meng‐Wei Wang, Ting Ding, Hang Liu, Zhen Yin, Kar Wei Ng, ShuMing Chen, Shuang‐Peng Wang   +9 more
wiley   +1 more source

Near‐infrared organic photoelectric materials for light‐harvesting systems: Organic photovoltaics and organic photodiodes

InfoMat, 2020
The inherent advantages of organic optoelectronic materials endow light‐harvesting systems, including organic photovoltaics (OPVs) and organic photodiodes (OPDs), with multiple advantages, such as low‐cost manufacturing, light weight, flexibility, and ...
Boming Xie, Zhongxin Chen, Lei Ying, Fei Huang, Yong Cao   +4 more
doaj   +1 more source