Results 51 to 60 of about 217,009 (264)

Lead free perovskite based heterojunction photodetectors: A mini review

Applied Surface Science Advances, 2023
In recent years, heterojunction photodetectors have been proposed as promising optoelectronics. The heterojunction photodetectors have garnered attention on a global scale due to its crucial role in both public or commercial applications and basic ...
Swayam Aryam Behera, P. Ganga Raju Achary   +1 more
doaj   +1 more source

Temperature-dependent energy storage characterization of Pb-free relaxor ferroelectrics [PDF]

Journal of Advanced Dielectrics, 2020
The energy storage properties of (1−x)Bi0.5Na0.5TiO3–xBaTiO3(0≤x≤0.08) (BNT–BT) ceramics obtained via sol–gel method are determined from the polarization versus electric field (P–E) loops at various temperatures. The energy storage densities are observed
Sarir Uddin, Guang-Ping Zheng, Asif Khan, Muhammad Riaz Khan, Banaras Khan   +4 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

Effect of ionic radii on the Curie temperature in Ba1-x-ySrxCayTiO3 compounds [PDF]

, 2016
A series of Ba1-x-ySrxCayTiO3 compounds were prepared with varying average ionic radii and cation disorder on A-site. All samples showed typical ferroelectric behavior.
Alford, N, Berenov, AV, Le Goupil, F
core   +2 more sources

Potential lead-free small band gap halide double perovskites Cs2CuMCl6 (M = Sb, Bi) for green technology

Scientific Reports, 2021
Explorations of stable lead-free perovskites have currently achieved substantial interest to overcome the instability and avoid toxicity related issue faced with the lead-based perovskites.
Muskan Nabi, D. Gupta
semanticscholar   +1 more source

Copper‐based Materials for Photo and Electrocatalytic Process: Advancing Renewable Energy and Environmental Applications

Advanced Functional Materials, EarlyView.
Cu‐based catalysts as a cornerstone in advancing sustainable energy technologies are fully reviewed in this manuscript, highlighting their potential in photo‐ and electrocatalysis. It includes metallic copper, copper oxides, copper sulfides, copper halide perovskites, copper‐based metal–organic frameworks (MOFs), and covalent organic frameworks (COFs),
Jéssica C. de Almeida, Yanjie Wang, Thais A. Rodrigues, Paulo H. H. Nunes, Vagner R. de Mendonça, Paulo H. E. Falsetti, Leticia V. Savazi, Tao He, Alexandra V. Bardakova, Aida V. Rudakova, Jie Tian, Alexei V. Emeline, Osmando F. Lopes, Antonio Otavio T. Patrocínio, Jia Hong Pan, Caue Ribeiro, Detlef W. Bahnemann   +16 more
wiley   +1 more source

Machine Learning Stability and Bandgaps of Lead‐Free Perovskites for Photovoltaics

Advanced Theory and Simulations, 2019
Compositional engineering of perovskites has enabled the precise control of material properties required for their envisioned applications in photovoltaics. However, challenges remain to address efficiency, stability, and toxicity simultaneously.
J. Stanley, Felix Mayr, A. Gagliardi
semanticscholar   +1 more source

High‐Stable Lead‐Free Solar Cells Achieved by Surface Reconstruction of Quasi‐2D Tin‐Based Perovskites

Advances in Materials, 2023
Tin halide perovskites are an appealing alternative to lead perovskites. However, owing to the lower redox potential of Sn(II)/Sn(IV), particularly under the presence of oxygen and water, the accumulation of Sn(IV) at the surface layer will negatively ...
Feng Yang, Rui Zhu, Zuhong Zhang, Zhenhuang Su, Weiwei Zuo, Bingchen He, M. Aldamasy, Yu Jia, Guixiang Li, Xingyu Gao, Zhe Li, Michael Saliba, Antonio Abate, Meng Li   +13 more
semanticscholar   +1 more source

Unassisted Photoelectrochemical Hydrogen Production Coupled with Selective Glucose Oxidation Using Metal Halide Perovskite Photoanodes

Advanced Functional Materials, EarlyView.
A metal halide perovskite‐based photoanode integrated with a CoNiFe layered double hydroxide (LDH) cocatalyst is reported for selective glucose oxidation reaction (GOR), achieving simultaneous and unassisted photoelectrochemical hydrogen production. This system delivers high photocurrent density, excellent Faradaic efficiency of GOR, and strong techno ...
Shujie Zhou, Xu Liu, Michael Gunawan, Yihao Shan, Ming Zhang, Shaine Lucas, Adhi Satriyatama, Denny Gunawan, Ao Wang, Xiaojie Yuan, Kaiwen Sun, Rose Amal, Xiaojing Hao   +12 more
wiley   +1 more source

Theoretical Design of Tellurium-Based Two-Dimensional Perovskite Photovoltaic Materials

Molecules
In recent years, the photoelectric conversion efficiency of three–dimensional (3D) perovskites has seen significant improvements. However, the commercial application of 3D perovskites is hindered by stability issues and the toxicity of lead.
Chunhong Long, Peihao Huang
doaj   +1 more source