Results 31 to 40 of about 2,713 (215)

Preferred oriented cation configurations in high pressure phases IV and V of methylammonium lead iodide perovskite [PDF]

Scientific Reports, 2020
AbstractA microscopic viewpoint of structure and dipolar configurations in hybrid organic–inorganic perovskites is crucial to understanding their stability and phase transitions. The necessity of incorporating dispersion interactions in the state-of-the-art density functional theory for the $$CH_3NH_3PbI_3$$ C
Wiwittawin Sukmas, Vichawan Sakulsupich, Prutthipong Tsuppayakorn‐aek, Udomsilp Pinsook, Teerachote Pakornchote, Rakchat Klinkla, Thiti Bovornratanaraks   +6 more
openaire   +2 more sources

Recent Advances on the Strategies to Stabilize the α-Phase of Formamidinium Based Perovskite Materials

Crystals, 2022
Perovskite solar cells (PSC) are considered promising next generation photovoltaic devices due to their low cost and high-power conversion efficiency (PCE).
Hongmei Zhao, Lei Zhao, Song Li, Yanfang Chu, Yucheng Sun, Bin Xie, Junjie He, Jing Li   +7 more
doaj   +1 more source

Methylammonium Halide Salt Interfacial Modification of Perovskite Quantum Dots/Triple-Cation Perovskites Enable Efficient Solar Cells

SSRN Electronic Journal, 2022
Abstract Perovskite solar cells (PeSCs) have been introduced as a new photovoltaic device due to their excellent power conversion efficiency (PCE) and low cost. However, due to the limitations of the perovskite film itself, the existence of defects was inevitable, which seriously affects the number and mobility of
Ching-Ho Tien, Hong-Ye Lai, Lung-Chien Chen   +2 more
openaire   +3 more sources

Resolving Mixed Intermediate Phases in Methylammonium-Free Sn–Pb Alloyed Perovskites for High-Performance Solar Cells

Nano-Micro Letters, 2022
The complete elimination of methylammonium (MA) cations in Sn–Pb composites can extend their light and thermal stabilities. Unfortunately, MA-free Sn–Pb alloyed perovskite thin films suffer from wrinkled surfaces and poor crystallization, due to the ...
Zhanfei Zhang, Jianghu Liang, Jianli Wang, Yiting Zheng, Xueyun Wu, Congcong Tian, Anxin Sun, Zhenhua Chen, Chun-Chao Chen   +8 more
doaj   +1 more source

Improving Photovoltaic Performance of Hybrid Organic-Inorganic MAGeI₃ Perovskite Solar Cells via Numerical Optimization of Carrier Transport Materials (HTLs/ETLs)

Nanomaterials, 2023
In this study, a hybrid organic–inorganic perovskite solar cell (PSC) based on methylammonium germanium triiodide (MAGeI3), which is composed of methylammonium (CH3NH3+) cations and germanium triiodide (GeI3−) anions, has been numerically studied using ...
Tariq AlZoubi, Bachar Mourched, Mahmoud Al Gharram, Ghaseb Makhadmeh, Osama Abu Noqta   +4 more
doaj   +1 more source

Structural and electronic properties of hybrid perovskites for high-efficiency thin-film photovoltaics from first-principles

APL Materials, 2013
The performance of perovskite solar cells recently exceeded 15% solar-to-electricity conversion efficiency for small-area devices. The fundamental properties of the active absorber layers, hybrid organic-inorganic perovskites formed from mixing metal and
Federico Brivio, Alison B. Walker, Aron Walsh   +2 more
doaj   +1 more source

A 3D Lead Iodide Hybrid Based on a 2D Perovskite Subnetwork

Crystals, 2021
Lead halide perovskites have emerged as promising materials for various optoelectronic applications. For photovoltaics, the reference compound is the 3D perovskite (MA)PbI3 (MA+ = methylammonium). However, this material suffers from instabilities towards
Maroua Ben Haj Salah, Justine Tessier, Nicolas Mercier, Magali Allain, Antonin Leblanc, Xiaoyang Che, Claudine Katan, Mikael Kepenekian   +7 more
doaj   +1 more source

Tungsten Oxide Nanocrystals Doped with Interstitial Methylammonium Cations

Nanoscale
Doping of semiconductor nanocrystals is a well-established process to impart new or enhanced functionalities to the host material. In this work we present the synthesis of colloidal WO3 nanocrystals doped with interstitial methylammonium cations.
Owen Kendall, Lesly V. Melendez, Merve Nur Guven Bicer, Michael Wilms, Joel van Embden, Daniel E. Gómez, Arrigo Calzolari, Deborah Prezzi, Enrico Della Gaspera   +8 more
openaire   +3 more sources

Trap‐Assisted Transport and Neuromorphic Plasticity in Lead‐Free 2D Perovskites PEA2SnI4

Advanced Functional Materials, EarlyView.
An artificial retina built from lead‐free layered perovskite (PEA)2SnI4 converts light input into a persistent photocurrent and sums successive flashes over time. Micro/nanocrystals integrated on electrodes act as synapse‐like pixels that perform temporal integration directly in hardware. This in‐sensor preprocessing merges detection and computation on
Ofelia Durante, Valeria Demontis, Jonas Riisnaes Karl, Lam Hoi Tung, Sebastiano De Stefano, Daniela Marongiu, Adolfo Mazzotti, Aditya Bhardwaj, Francesco Mattana, Elisa Pili, Selene Matta, Federico Paolucci, Michele Saba, Andrea Mura, Giovanni Bongiovanni, Monica F Craciun, Saverio Russo, Antonio Di Bartolomeo   +17 more
wiley   +1 more source

Influence of A-site cation on the thermal stability of metal halide perovskite polycrystalline films

Journal of Information Display, 2018
This paper reports a comparative study of thermal stability between all-organic metal halide perovskite (MHP) CsPbBr3 and organic–inorganic hybrid MHP (methylammonium lead bromide MAPbBr3).
Himchan Cho, Joo Sung Kim, Young-Hoon Kim, Tae-Woo Lee   +3 more
doaj   +1 more source