Results 71 to 80 of about 8,966 (267)

Rich Chemistry in Inorganic Halide Perovskite Nanostructures. [PDF]

, 2018
Halide perovskites have emerged as a class of promising semiconductor materials owing to their remarkable optoelectronic properties exhibiting in solar cells, light-emitting diodes, semiconductor lasers, etc.
Huang, Jianmei, Lai, Minliang, Lin, Jia, Yang, Peidong   +3 more
core  

Monolithic CIGS-Perovskite Tandem Cell for an Optimal Light Harvesting Without Current Matching [PDF]

, 2017
We present a novel monolithic architecture for optimal light harvesting in multijunction thin film solar cells. In the configuration we consider, formed by a perovskite (PVK) cell overlying a CIGS cell, the current extracted from the two different ...
Buecheler, Stephan, Colodrero, Silvia, Correa-Baena, Juan-Pablo, Feurer, Thomas, Hagfeldt, Anders, Liu, Quan, Mantilla-Perez, Paola, Martorell, Jordi, Saliba, Michael, Tiwari, Ayodhya N., Toudert, Johann   +10 more
core   +2 more sources

Observation of Two‐Photon Resonant Raman Scattering via the Biexciton Level in Two‐Dimensional Halide Perovskite (C6H5C2H4NH3)2PbI4

Advanced Functional Materials, EarlyView.
Efficient two‐photon resonant Raman scattering (TRRS) is observed in the layered perovskite (PEA)2PbI4, with the biexciton level acting as an intermediate state. TRRS undergoes two‐photon frequency shift upon input frequency tuning, persists up to 90 K, and shows clear threshold behavior and polarization selection rules.
Seung Han Shin, Seo Hyun Nam, Jeehong Park, Dong Gyu Lee, Jeong Bin Cho, Tae Jung Kim, Yeonjin Yi, Joon Ik Jang   +7 more
wiley   +1 more source

High performance of mixed halide perovskite solar cells: role of halogen atom and plasmonic nanoparticles on the ideal current density of cell

, 2017
To be able to increase the efficiency of perovskite solar cells which is one of the most substantial challenges ahead in photovoltaic industry, the structural and optical properties of perovskite CH3NH3PbI3-xBrx for values x=1-3 have been studied ...
Mohebpour, Mohammad Ali, Saffari, Mohaddeseh, Soleimani, Hamid Rahimpour, Tagani, Meysam Bagheri   +3 more
core   +1 more source

Ferroelectric Materials for Solar Energy Conversion: Photoferroics Revisited [PDF]

, 2014
The application of ferroelectric materials (i.e. solids that exhibit spontaneous electric polarisation) in solar cells has a long and controversial history.
Butler, Keith T., Frost, Jarvist M., Walsh, Aron   +2 more
core   +3 more sources

Cross‐Layer Molecular Design for Coherent Interface Passivation in Rigid and Flexible Perovskite Solar Cells

Advanced Functional Materials, EarlyView.
A cross‐layer passivation strategy employing molecularly designed thiazol‐5‐ylmethanamine hydrochloride (TMACl) enables coherent defect regulation at the SnO2/perovskite interface, stabilizes both layers, promotes phase‐pure α‐FAPbI3 formation, and enhances charge extraction, delivering PCEs of 26.44% in rigid and 24.72% in flexible perovskite solar ...
Fan Shen, Chenxu Zhao, Lianghui Li, Jia Xu, Jiale Chen, Xunhui Wang, Huijing Liu, Pengchen Zou, Xuewei Liu, Yao Fu, Huifang Han, Kun Lang, Yijun Wang, Yahan Wu, Xu Pan, Zhaofu Fei, Jianxi Yao   +16 more
wiley   +1 more source

Quantification of Ion Migration in CH3NH3PbI3 Perovskite Solar Cells by Transient Capacitance Measurements

, 2019
Solar cells based on organic-inorganic metal halide perovskites show efficiencies close to highly-optimized silicon solar cells. However, ion migration in the perovskite films leads to device degradation and impedes large scale commercial applications ...
Ehrler, Bruno, Fakharuddin, Azhar, Futscher, Moritz H., Haider, Muhammad Irfan, Lee, Ju Min, McGovern, Lucie, Muscarella, Loreta A., Schmidt-Mende, Lukas, Wang, Tianyi   +8 more
core   +1 more source

X‐Functionality–Driven Photocatalytic Hydrogen Evolution in 2D 4‐X‐PEA2SnI4 Perovskites

Advanced Functional Materials, EarlyView.
We report a water‐based synthesis of 2D 4‐X‐PEA2SnI4 perovskite microcrystals with prominent photocatalytic (PC) activity for H2 production. The synergy between organic functionalization and HI‐derived iodide scavenges holes suppress octahedral distortion, and favor electron accumulation, enabling a PC H2 evolution ∼20 µmol·g−1 and long‐term stability ...
Taeyeon Kim, Gayoung Seo, Seong Yeon Park, Juwon Jang, Yunho Ahn, Samiksha Mukesh Jain, Samrat Das Adhikari, Harumi Correa‐Leiva, Ignacio Utreras‐Asenjo, Oscar A. Douglas‐Gallardo, Carina Pareja‐Rivera, Kayoung Cho, Byeongsung Kim, Jhonatan Rodriguez‐Pereira, Eunseo Choi, JaeHong Park, Jin Ho Bang, Danilo H. Jara‐Quinteros, Sixto Giménez, Seog Joon Yoon, Andrés F. Gualdrón‐Reyes, Iván Mora‐Seró   +21 more
wiley   +1 more source

Breakdown of the static picture of defect energetics in halide perovskites: the case of the Br vacancy in CsPbBr3

, 2019
We consider the Br vacancy in CsPbBr3 as a prototype for the impact of structural dynamics on defect energetics in halide perovskites (HaPs). Using first-principles molecular dynamics based on density functional theory, we find that the static picture of
Cohen, Ayala V., Egger, David A., Kronik, Leeor, Rappe, Andrew M.   +3 more
core   +1 more source

A Universal Interfacial Dipole Strategy for Defect Suppression in Inverted Perovskite Solar Cells With Tunable Bandgaps

Advanced Functional Materials, EarlyView.
A 2D heterointerface with a two‐site anchor bridge suppresses nonradiative recombination at the perovskite/C₆₀ interface by reducing surface defects, elevating the Fermi level, and strengthening the electric field. This strategy enables efficient electron extraction, delivering 26.32% efficiency, 1.217 V Voc, excellent operational stability, and broad ...
Chaohui Li, Hyoungwon Park, Fabian Streller, Klaus Götz, Jiwon Byun, Shudi Qiu, Zhangyu Yuan, Jonas Englhard, Andrej Vincze, Zijian Peng, Lirong Dong, Yanxue Wang, Chao Liu, Jingjing Tian, Mingjie Feng, Peichun Liao, Fu Yang, Andreas Späth, Andres Osvet, Thomas Heumueller, Marcus Halik, Silke H. Christiansen, Tobias Unruh, Julien Bachmann, Rainer H. Fink, Ning Li, Larry Lüer, Christoph J. Brabec   +27 more
wiley   +1 more source