Results 91 to 100 of about 333,285 (230)

Ambipolar Solution-processed Hybrid Perovskite Phototransistors

, 2015
Organolead halide perovskites have attracted substantial attention due to their excellent physical properties, which enable them to serve as the active material in emerging hybrid solid-state solar cells. Here we investigate the phototransistors based on
Hu, Weijin, Li, Feng, Ma, Chun, Sheikh, Arif D., Wang, Hong, Wu, Tom, Yu, Weili   +6 more
core   +1 more source

Energy-band gradient structure originated from longitudinal phase segregation of mixed halide perovskite single crystal

Communications Materials
Energy-band gradient halide perovskites are highly desired candidates for fabricating high performance optoelectronic devices. Here, we demonstrate that a mixed halide perovskite single crystal undergoes phase segregation in the longitudinal direction ...
Zelong Chen, Zhiya Dang, Yuqing Luo, Feng Li, Tongtong Lu, Zihao Li, Xiaobin Rao, Qi Sun, Pingqi Gao   +8 more
doaj   +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

Suppressed phase separation of mixed-halide perovskites confined in endotaxial matrices

Nature Communications, 2019
The bandgap of mixed-halide perovskites can be continuously tuned by changing the halide ratio, but the crystals have poor photo-stability. Here the authors show that photoinduced phase separation is suppressed when perovskite nanocrystals are embedded ...
Xi Wang, Yichuan Ling, Xiujun Lian, Yan Xin, Kamal B. Dhungana, Fernando Perez-Orive, Javon Knox, Zhizhong Chen, Yan Zhou, Drake Beery, Kenneth Hanson, Jian Shi, Shangchao Lin, Hanwei Gao   +13 more
doaj   +1 more source

Pb-free halide perovskites for solar cells, light-emitting diodes, and photocatalysts

APL Materials, 2022
Metal halide perovskites have recently emerged as one of the most promising classes of semiconductors for various applications, especially in the field of optoelectronics.
Pingping Jiang, Debdipto Acharya, George Volonakis, Marios Zacharias, Mikaël Kepenekian, Laurent Pedesseau, Claudine Katan, Jacky Even   +7 more
doaj   +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

Effect of disorder on transport properties in a tight-binding model for lead halide perovskites

, 2017
The hybrid organic-inorganic lead halide perovskite materials have emerged as remarkable materials for photovoltaic applications. Their strengths include good electric transport properties in spite of the disorder inherent in them.
Ashhab, S., Hoogland, S., Madjet, M. E., Sargent, E. H., Voznyy, O.   +4 more
core   +1 more source

Stabilizing halide perovskite surfaces for solar cell operation with wide-bandgap lead oxysalts

Science, 2019
Stability through oxysalts The stability of organic-inorganic perovskite solar cells is limited by degradation from oxygen and water. Yang et al. show that in situ reaction of perovskites with sulfate or phosphate ions can create thin, strongly bonded ...
Shuang Yang, Shangshang Chen, E. Mosconi, Yanjun Fang, Xun Xiao, Congcong Wang, Yu Zhou, Zhenhua Yu, Jingjing Zhao, Yongli Gao, F. De Angelis, Jinsong Huang   +11 more
semanticscholar   +1 more source

Excess Iodine Improves the Electronic Properties of Zinc Phosphate and Pb‐Halide Perovskite Nanostructured Interfaces

Small Structures
Interfaces between Pb‐halide perovskites and protective layers are of interest for high‐efficiency solar cells and highly luminescent core–shell nanostructures.
Weiyi Zhang, Tiziana Musso, Robert J. Patterson   +2 more
doaj   +1 more source

Computational Study of Halide Perovskite-Derived A$_2$BX$_6$ Inorganic Compounds: Chemical Trends in Electronic Structure and Structural Stability

, 2017
The electronic structure and energetic stability of A$_2$BX$_6$ halide compounds with the cubic and tetragonal variants of the perovskite-derived K$_2$PtCl$_6$ prototype structure are investigated computationally within the frameworks of density ...
Asta, Mark, Cai, Yao, Chen, Yan, Ding, Hong, Krishnamoorthy, Thirumal, Mathews, Nripan, Mhaisalkar, Subodh G., Sherburne, Matthew, Wong, Lydia H., Xie, Wei   +9 more
core   +1 more source