Lead‐Free Sodium–Indium Double Perovskite Nanocrystals through Doping Silver Cations for Bright Yellow Emission

Han, Peigeng; Yang, Songqiu; Zhang, Fei; Yang, Bin; Wei, Donghui; Deng, Weiqiao; Han, Keli

doi:10.1002/ange.201909525

Cited by 53 publications

(38 citation statements)

References 44 publications

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“…Undoped Cs2NaInCl6 has no luminescence, which was believed to be due to the selftrapped excitons being dark. Alloying with Ag+ improved the PLQE to 31.1% [364]. Alloying Cs2(Ag0.6Na0.4)InCl6 with 0.04% Bi further increased the PLQE to 86±5%, with broad emission centered at 570 nm wavelength [277].…”

Section: Light-emitting Applicationsmentioning

confidence: 97%

Perovskite-inspired materials for photovoltaics and beyond—from design to devices

et al. 2021

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Lead-halide perovskites have demonstrated astonishing increases in power conversion efficiency in photovoltaics over the last decade. The most efficient perovskite devices now outperform industry-standard multi-crystalline silicon solar cells, despite the fact that perovskites are typically grown at low temperature using simple solution-based methods. However, the toxicity of lead and its ready solubility in water are concerns for widespread implementation. These challenges, alongside the many successes of the perovskites, have motivated significant efforts across multiple disciplines to find lead-free and stable alternatives which could mimic the ability of the perovskites to achieve high performance with low temperature, facile fabrication methods. This Review discusses the computational and experimental approaches that have been taken to discover lead-free perovskite-inspired materials, and the recent successes and challenges in synthesizing these compounds. The atomistic origins of the extraordinary performance exhibited by lead-halide perovskites in photovoltaic devices is discussed, alongside the key challenges in engineering such high-performance in alternative, next-generation materials. Beyond photovoltaics, this Review discusses the impact perovskite-inspired materials have had in spurring efforts to apply new materials in other optoelectronic applications, namely light-emitting diodes, photocatalysts, radiation detectors, thin film transistors and memristors. Finally, the prospects and key challenges faced by the field in advancing the development of perovskite-inspired materials towards realization in commercial devices is discussed.

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Section: Light-emitting Applicationsmentioning

confidence: 97%

Perovskite-inspired materials for photovoltaics and beyond—from design to devices

et al. 2021

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“…175 It is also found that the minor luminescence of the as-prepared Cs 2 NaInCl 6 nanocrystals (dark STEs) can convert into a bright yellow emission (attributed to bright STEs) by Ag + doping. 176 Two physical mechanisms have been proposed to explain the enhanced light emissions. 177 First, [NaCl 6 ] 5− and [AgCl 6 ] 5− octahedra can break the parity-forbidden selection rule for the direct optical transition hence stimulating effective photoluminescence (PL) emission.…”

Section: Light Emissionmentioning

confidence: 99%

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

et al. 2022

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Metal halide perovskites have recently emerged as one of the most promising classes of semiconductors for various applications, especially in the field of optoelectronics. Lead-based halide perovskite materials, virtually unexploited for decades, have become prominent candidates due to their unique and intrinsic physicochemical and optical properties. Current challenges faced by the scientific community to capitalize on the properties of Pb-based perovskites are mainly associated with environmental concerns due to the toxicity of Pb and their poor stability. Under this context, over recent years, a number of new Pb-free halide perovskite (and perovskite-like) semiconductor classes have been introduced. This Perspective reviews recent developments in Pb-free halide perovskites, which specifically target their application in solar cells, light-emitting devices, and photocatalysts. Each type of Pb-free material is paired with a specific optoelectronic application, and the latest record performances are reported. Although these materials do not yet exhibit as attractive intrinsic optoelectronic properties as the Pb-based halide perovskites, their potential as alternatives for well-suited applications is discussed.

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“…[201], copyright 2019 Angewandte Chemie International Edition. [216], which exhibited a poor PL performance because of the presence of dark STEs in perovskites. The dark STEs can be converted into bright STEs by doping with Ag + to produce a bright yellow emission, with the highest PLQY of 31.1%.…”

Section: Relative Intensity (%)mentioning

confidence: 99%

Recent Advances and Opportunities of Lead-Free Perovskite Nanocrystal for Optoelectronic Application

Zhang

Shi

et al. 2021

Energy Mater Adv

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Metal halide perovskite nanocrystals (NCs), as a new class of light-emitting and light-harvesting materials, have recently attracted intensive attention for an impressive variety of optoelectronic applications. However, the lead toxicity and poor stability of such materials severely restrict their practical applications and future commercialization. Lead-free perovskite NCs and their derivatives, designed by the reasonable chemical substitution of Pb with other nontoxic elements, are recently booming as an attractive alternative to lead-based counterparts. In this review, we firstly present a comprehensive overview of currently explored lead-free perovskite NCs with an emphasis on their design routes, morphologies, optoelectronic properties, and environmental stability issues. Then, we discuss the preliminary achievements of lead-free perovskite NCs in versatile optoelectronic applications, such as light-emitting devices, solar cells, photodetectors, and photocatalysis. We finish this review with a critical outlook into the currently existing challenges and possible development opportunities of this rapidly evolving field.

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Lead‐Free Sodium–Indium Double Perovskite Nanocrystals through Doping Silver Cations for Bright Yellow Emission

Cited by 53 publications

References 44 publications

Perovskite-inspired materials for photovoltaics and beyond—from design to devices

Perovskite-inspired materials for photovoltaics and beyond—from design to devices

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

Recent Advances and Opportunities of Lead-Free Perovskite Nanocrystal for Optoelectronic Application

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