Results 41 to 50 of about 1,921 (222)

Controlling the Defects of Cs2AgBiBr6 by Varied Precursor Compositions

open access: yesAdvanced Photonics Research, 2022
The amount and type of defects in Cs2AgBiBr6 are controlled by varying the Ag/Bi ratio of the precursor solutions in two different synthesis routes, that is, slow solution cooling crystallization and fast microwave‐assisted hydrothermal synthesis.
Alexander Frebel   +10 more
doaj   +1 more source

Improving the efficiency of a FTO/PCBM/Cs2AgBiBr6/NiOx/Au lead-free double perovskite solar cell using numerical simulation through optimizing the absorption layer thickness and work function of electrodes

open access: yesResults in Optics, 2023
Lead-free perovskite solar cells are proposed to reduce environmental toxicity. However, the efficiency of these solar cells is significantly lower than that of those based on lead. The maximum Photo Conversion Efficiency(PCE) reported experimentally for
Sarata Beriha   +2 more
doaj   +1 more source

Double perovskite Cs2AgBiBr6 radiation sensor: synthesis and characterization of single crystals [PDF]

open access: yesJournal of Materials Science, 2022
AbstractSingle crystals of lead-free halide double perovskite Cs2AgBiBr6 sensor material manifest a remarkable potential for application in radiation detection and imaging. In this study, the purity and crystallinity of solution-grown Cs2AgBiBr6 single crystals with cubic Fm$$\overline{3}$$ 3 ¯
Valeria Murgulov   +6 more
openaire   +3 more sources

Lead‐Free Double Perovskite Cs2AgBiBr6: Fundamentals, Applications, and Perspectives

open access: yesAdvanced Functional Materials, 2021
Cs2AgBiBr6, as a benchmark lead‐free double perovskite, has emerged as a promising alternative to lead‐based perovskites because of its high stability, non‐toxicity, exceptional optoelectronic properties, and multifunctionality.
Hongwei Lei, D. Hardy, F. Gao
semanticscholar   +1 more source

Current Advancements in Material Research and Techniques Focusing on Lead-free Perovskite Solar Cells [PDF]

open access: yes, 2017
Organic-inorganic lead halide perovskite solar cells (PSCs) recently achieved a photo-to-electricity conversion efficiency (PCE) of 22.1%. They drew much attention as promising photovoltaic devices.
Gao Liguo   +3 more
core   +2 more sources

Orbital-Energy Splitting in Anion Ordered Ruddlesden-Popper Halide Perovskites for Tunable Optoelectronic Applications

open access: yes, 2020
The electronic orbital characteristics at the band edges plays an important role in determining the electrical, optical and defect properties of perovskite photovoltaic materials.
Ghosez, Philippe   +4 more
core   +1 more source

Crystallographic, Optical, and Electronic Properties of the Cs2AgBi1–xInxBr6 Double Perovskite: Understanding the Fundamental Photovoltaic Efficiency Challenges [PDF]

open access: yes, 2021
We present a crystallographic and optoelectronic study of the double perovskite Cs2AgBi1–xInxBr6. From structural characterization we determine that the indium cation shrinks the lattice and shifts the cubic-to-tetragonal phase transition point to lower ...
Abdi-Jalebi, M   +13 more
core  

Halide double-perovskites: High efficient light emission and beyond [PDF]

open access: yes, 2023
Lead-free halide double perovskites are stable and versatile materials for a wide range of applications, particularly for lighting, thanks to their very efficient emission of warm white light.
Bongiovanni, Giovanni   +7 more
core   +1 more source

Double Perovskite Single-Crystal Photoluminescence Quenching and Resurge:The Role of Cu Doping on its Photophysics and Crystal Structure [PDF]

open access: yes, 2021
Cs2AgBiBr6 is a potential lead-free double perovskite candidate for optoelectronic applications; however, its large and indirect band gap imposes limitations.
Blake, Graeme R.   +4 more
core   +1 more source

Capillary-Bridge Controlled Patterning of Stable Double-Perovskite Microwire Arrays for Non-toxic Photodetectors

open access: yesFrontiers in Chemistry, 2020
Single-crystalline lead halide perovskites with remarkable physical properties offer great potential in integrated optoelectronic applications but are restricted by their instability and toxicity.
Yueyang Pi   +11 more
doaj   +1 more source

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