Results 31 to 40 of about 235,876 (278)

Localized holes and delocalized electrons in photoexcited inorganic perovskites: Watching each atomic actor by picosecond X-ray absorption spectroscopy [PDF]

, 2016
We report on an element-selective study of the fate of charge carriers in photoexcited inorganic CsPbBr3 and CsPb(ClBr)3 perovskite nanocrystals (NCs) in toluene solutions using time-resolved X-ray absorption spectroscopy with 80 ps time resolution ...
Budarz, James, Capano, Gloria, Chergui, Majed, Ferreira, Dario S., Grilj, Jakob, Grolimund, Daniel, Haddad, André Al, Kinschel, Dominik, Kovalenko, Maksym V., Mewes, Lars, Nachtegaal, Maarten, Nedelcu, Georgian, Rossi, Giacomo, Rossi, Thomas, Samson, Valerie, Santomauro, Fabio G., Smolentsev, Grigory, Tovar, Mario Gutierrez, Yakunin, Sergii   +18 more
core   +5 more sources

Excitonic States in Semiconducting Two-dimensional Perovskites

, 2018
Hybrid organic/inorganic perovskites have emerged as efficient semiconductor materials for applications in photovoltaic solar cells with conversion efficiency above 20 \%.
Molina-Sánchez, Alejandro
core   +2 more sources

Pressure-induced dramatic changes in organic-inorganic halide perovskites. [PDF]

, 2017
Organic-inorganic halide perovskites have emerged as a promising family of functional materials for advanced photovoltaic and optoelectronic applications with high performances and low costs.
Jia, Quanxi, Lü, Xujie, Xu, Hongwu, Yang, Wenge   +3 more
core   +2 more sources

New, Lead Free, Perovskites With a Diffuse Phase Transition: NaNbO_{3} ~ Solid Solutions

, 2002
Some of (1-x)NaNbO_3-(x)ABO_3 perovskite solid solutions exhibit a dramatic diffusion of the dielectric permittivity epsilon' maximum and relaxor-type behavior when the second component concentration exceeds a threshold value x_0. The concentration phase
Prosandeev, S. A., Raevski, I. P.
core   +2 more sources

Identification of Free and Bound Exciton States and Their Phase-Dependent Trapping Behavior in Lead Halide Perovskites

, 2017
In this work we probe the sub-gap energy states within polycrystalline and single crystal lead halide perovskites to better understand their intrinsic photophysics behaviors.
Jasieniak, Jacek J., Li, Dongmei, Li, Yiming, Li, Yusheng, Luo, Yanhong, Meng, Qingbo, Shi, Jiangjian, Wu, Huijue, Zhang, Huiyin   +8 more
core   +1 more source

Thermodynamics and the intrinsic stability of lead halide perovskites CH3NH3PbX3 [PDF]

, 2018
The role of thermodynamics in assessing the intrinsic instability of the CH3NH3PbX3 perovskites (X = Cl,Br,I) is outlined on the basis of the available experimental information.
Ciccioli, A., Latini, A.
core   +1 more source

What is moving in hybrid halide perovskite solar cells?

, 2016
Organic-inorganic semiconductors, which adopt the perovskite crystal structure, have perturbed the landscape of contemporary photovoltaics research. In this Account, we discuss the internal motion of methylammonium lead iodide (CH$_3$NH$_3$PbI$_3$) and ...
Frost, Jarvist M., Walsh, Aron
core   +2 more sources

A DFT investigation of lead-free TlSnX3 (X = Cl, Br, or I) perovskites for potential applications in solar cells and thermoelectric devices

RSC Advances, 2023
In the present study, the Density Functional Theory (DFT) was employed to computationally investigate the potential application of newly developed lead-free perovskites with the formula of TlSnX3 (X = Cl, Br, or I) as absorbers in the perovskite solar ...
R. Pingak, S. Bouhmaidi, Amine Harbi, L. Setti, F. Nitti, M. Moutaabbid, A. Z. Johannes, N. U. Hauwali, M. Z. Ndii   +8 more
semanticscholar   +1 more source

Low Temperature Optical Properties of Novel Lead‐Free Cs2NaFeCl6 Perovskite Single Crystals

Advanced Photonics Research, 2023
Lead‐free double perovskites have attracted much attention as possible alternatives to lead halide based perovskites in photovoltaic applications. However, to date only few double perovskites have been successfully employed in optoelectronic device ...
Melina Armer, Patrick Dörflinger, Andreas Weis, Carsten Büchner, Andreas Gottscholl, Julian Höcker, Kilian Frank, Lukas Nusser, Maximilian T. Sirtl, Bert Nickel, Thomas Bein, Vladimir Dyakonov   +11 more
doaj   +1 more source

Enhanced perovskite electronic properties via A-site cation engineering

Fundamental Research, 2021
Organic-inorganic halide perovskites have emerged as excellent candidates for low-cost photovoltaics and optoelectronics. While the predominant recent trend in designing perovskites for efficient and stable solar cells has been to mix different A-site ...
Xufeng Xiao, Yanmeng Chu, Chunyu Zhang, Zhihui Zhang, Zexiong Qiu, Cheng Qiu, Huaixing Wang, Anyi Mei, Yaoguang Rong, Gengzhao Xu, Yue Hu, Hongwei Han   +11 more
doaj   +1 more source