MOFs-triggered formation of MAPbBr3@PbBr(OH) with enhanced stability

2021 ◽  
Author(s):  
Yun Tang ◽  
Peixin Wang ◽  
Ruoche Wang ◽  
Hudie Yuan ◽  
Yalou Xin ◽  
...  
Keyword(s):  
Practical Applications ◽  
Halide Perovskites ◽  
Lead Halide ◽  
Poor Stability ◽  
Enhanced Stability

Poor stability has long been a critic issue for lead halide perovskites that impeded their practical applications. To address this issue, we propose a novel and facile strategy to synthesize...

Thioacetamide-ligand-medicated synthesis of CsPbBr3-CsPbBr3 homostructured nanocrystals with enhanced stability

2021 ◽  
Author(s):  
Haiyang He ◽  
Shiliang Mei ◽  
Zhihao Chen ◽  
Siyu Liu ◽  
Zhuoqi Wen ◽  
...  
Keyword(s):  
Perovskite Nanocrystals ◽  
Practical Applications ◽  
Photoelectric Properties ◽  
Halide Perovskite ◽  
Lead Halide ◽  
Poor Stability ◽  
Enhanced Stability

Cesium lead halide perovskite nanocrystals (NCs) have compelling photoelectric properties while their poor stability severely impedes their practical applications. Herein, we demonstrate novel CsPbBr3-CsPbBr3 homostructured NCs induced by thioacetamide-Oleyamine (TAA-OAm)...

scholarly journals Photoluminescence Characteristics of Sn2+ and Ce3+-Doped Cs2SnCl6 Double-Perovskite Crystals

Materials ◽  
2019 ◽  
Vol 12 (9) ◽  
pp. 1501 ◽  
Author(s):  
Hongdan Zhang ◽  
Ludan Zhu ◽  
Jun Cheng ◽  
Long Chen ◽  
Chuanqi Liu ◽  
...  
Keyword(s):  
Decay Curve ◽  
Double Perovskite ◽  
Fluorescence Decay ◽  
Precipitation Method ◽  
Phase Precipitation ◽  
Fluorescence Decay Curve ◽  
Low Toxicity ◽  
Halide Perovskites ◽  
Lead Halide ◽  
Poor Stability

In recent years, all-inorganic lead-halide perovskites have received extensive attention due to their many advantages, but their poor stability and high toxicity are two major problems. In this paper, a low toxicity and stable Cs2SnCl6 double perovskite crystals were prepared by aqueous phase precipitation method using SnCl2 as precursor. By the XRD, ICP-AES, XPS, photoluminescence and absorption spectra, the fluorescence decay curve, the structure and photoluminescence characteristics of Ce3+-doped and undoped samples have been investigated in detail. The results show that the photoluminescence originates from defects. [ S n S n 4 + 2 + +VCl] defect complex in the crystal is formed by Sn2+ substituting Sn4+. The number of defects formed by Sn2+ in the crystal decreases with Ce3+ content increases. Within a certain number of defects, the crystal luminescence is enhanced with the number of [ S n S n 4 + 2 + +VCl] decreased. When Ce3+ is incorporated into the crystals, the defects of [ C e 3 + S n 4 + +VCl] and [ S n S n 4 + 2 + +VCl] were formed and the crystal show the strongest emission. This provides a route to enhance the photoluminescence of Cs2SnCl6 double perovskite crystals.

scholarly journals Interaction of light with lead halide perovskites: A review

2019 ◽  
Vol 2 (2) ◽  
pp. 67
Author(s):  
Zhiya Dang ◽  
Duc Anh Dinh
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Light Illumination ◽  
Low Light ◽  
Practical Applications ◽  
Halide Perovskites ◽  
Halide Perovskite ◽  
First Time ◽  
Lead Halide ◽  
Sample Environment

Lead halide perovskites are the new rising generation of semiconductor materials due to their unique optical and electrical properties. The investigation of the interaction of halide perovskites and light is a key issue not only for understanding their photophysics but also for practical applications. Hence, tremendous efforts have been devoted to this topic and brunch into two: (i) decomposition of the halide perovskites thin films under light illumination; and (ii) influence of light soaking on their photoluminescence (PL) properties. In this review, we for the first time thoroughly compare the illumination conditions and the sample environment to correlate the PL changes and decomposition of perovskite under light illumination. In the case of vacuum and dry nitrogen, PL of the halide perovskite (MAPbI3–xClx, MAPbBr3–xClx, MAPbI3) thin films decreases due to the defects induced by light illumination, and under high excitations, the thin film even decomposes. In the presence of oxygen or moisture, light induces the PL enhancement of halide perovskite (MAPbI3) thin films at low light illumination, while increasing the excitation, which causes the PL to quench and perovskite thin film to decompose. In the case of mixed halide perovskite ((MA)Pb(BrxI1-x)3) light induces reversible segregation of Br domains and I domains. 

scholarly journals Recent Research Trends for Improving the Stability of Organo/Inorgano Halide Perovskites

2022 ◽  
Vol 60 (1) ◽  
pp. 1-13
Author(s):  
Myeong Jin Seol ◽  
Jeong Woo Han ◽  
Seung Hwan Hwang ◽  
Soo Young Kim
Keyword(s):  
Ligand Exchange ◽  
Research Trends ◽  
Core Shell ◽  
Optical And Electrical Properties ◽  
Light Emitting ◽  
Practical Applications ◽  
Halide Perovskites ◽  
Core Shell Structure ◽  
The Stability ◽  
Lead Halide

Because of their superior optical, and electrical properties, lead halide perovskites have emerged as potential materials for light-emitting-diodes. However, some obstacles have yet to be overcome for practical applications including low exciton binding energy, the difficulty of fabricating uniform perovskite films,, and their instability to heat, light, and moisture. In this review, we focus on strategies to improve the lifetime, and stability of perovskites such as core-shell structure, ligand exchange, and doping.

Luminescence enhancement of lead halide perovskite light-emitting diodes with plasmonic metal nanostructures

Nanoscale ◽  
2021 ◽  
Author(s):  
Mingfei Zheng ◽  
Guojia Fang
Keyword(s):  
Light Emitting Diodes ◽  
Metal Nanostructures ◽  
Luminescent Materials ◽  
Luminescence Enhancement ◽  
Light Emitting ◽  
Practical Applications ◽  
Light Emitter ◽  
Halide Perovskites ◽  
Halide Perovskite ◽  
Lead Halide

Metal halide perovskites, as a newly emerging light-emitter, have been attracting considerable attention on luminescent materials and devices, due to their superior optoelectronic properties and potential practical applications. Recently, perovskite...

scholarly journals Hidden spontaneous polarisation in the chalcohalide photovoltaic Sn2SbS2I3

2021 ◽  
Author(s):  
Seán R. Kavanagh ◽  
Christopher Niall Savory ◽  
David O Scanlon ◽  
Aron Walsh
Keyword(s):  
Group Iv ◽  
Halide Perovskites ◽  
Lead Halide ◽  
Enhanced Stability ◽  
Spontaneous Polarisation

Perovskite-inspired materials aim to replicate the optoelectronic performance of lead-halide perovskites, while eliminating issues with stability and toxicity. Chalcohalides of group IV/V elements have attracted attention due to enhanced stability...

scholarly journals Interaction of light with lead halide perovskites: A review

2018 ◽  
Vol 1 (4) ◽  
Author(s):  
Zhiya Dang 1 ◽  
Duc Anh Dinh 1
Keyword(s):  
Thin Film ◽  
Thin Films ◽  
Light Illumination ◽  
Low Light ◽  
Practical Applications ◽  
Halide Perovskites ◽  
Halide Perovskite ◽  
First Time ◽  
Lead Halide ◽  
Sample Environment

Lead halide perovskites are the new rising generation of semiconductor materials due to theirunique optical and electrical properties. The investigation of the interaction of halide perovskites and light is a key issue not only for understanding theirphotophysicsbut also for practical applications. Hence, tremendous efforts have been devoted to this topic andbrunch into two:(i)decompositionof the halide perovskites thin films under light illumination and(ii)influence of light soaking on their photoluminescence (PL) properties. In this review, we for the first time thoroughly compare the illumination conditions and the sample environment to correlate the PL changes and decomposition of perovskite under light illumination. Inthe case of vacuum and dry nitrogen, PL of the halide perovskite ( PbI3–xClx, PbBr3–xClx, MAPbI3) thin films decreases due to the defects induced by light illumination, and under high excitations the thin film even decomposes. In thepresence of oxygen or moisture,light induces the PL enhancement of halide perovskite (MAPbI3) thin films at low light illumination, while increasing the excitationcauses the PL to quench and perovskite thin film to decompose. In the case of mixed halide perovskite (MAPb(BrxI1-x)3) light inducesreversible segregation of Br domains and I domains. 

THERMAL TRANSPORT BEHAVIORS IN LEAD HALIDE PEROVSKITES

2018 ◽  
Author(s):  
Wee-Liat Ong ◽  
Giselle Elbaz ◽  
Evan A. Doud ◽  
Philip Kim ◽  
Daniel Paley ◽  
...  
Keyword(s):  
Thermal Transport ◽  
Halide Perovskites ◽  
Lead Halide
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