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Room-temperature random lasing of metal-halide perovskites via morphology-controlled synthesis

Film morphology and the corresponding structural configuration can profoundly affect the optical performance, especially the random lasing action in organic–inorganic metal-halide perovskite thin films. They can be controlled in both micro- and nano-scale by manipulating different processing paramet...

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Autores principales: Hong, Yu-Heng, Kao, Tsung Sheng
Formato: Online Artículo Texto
Lenguaje:English
Publicado: RSC 2020
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9419175/
https://www.ncbi.nlm.nih.gov/pubmed/36133894
http://dx.doi.org/10.1039/d0na00794c
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author Hong, Yu-Heng
Kao, Tsung Sheng
author_facet Hong, Yu-Heng
Kao, Tsung Sheng
author_sort Hong, Yu-Heng
collection PubMed
description Film morphology and the corresponding structural configuration can profoundly affect the optical performance, especially the random lasing action in organic–inorganic metal-halide perovskite thin films. They can be controlled in both micro- and nano-scale by manipulating different processing parameters such as the ratios of engineered solvent mixtures, spin-coating speed and backplane temperature. With the optimized parameters, the synthesized bare perovskite thin films can achieve room-temperature random lasing action with the energy pumping threshold down to 0.9 mJ cm(−2) and the corresponding β factor is estimated to be about 0.14. The bare films also show a long-time lasing reliability, maintaining lasing intensity after an optical pumping of 12 × 10(5) pulses. Meanwhile, in the lifetime test under ambient conditions, the bare films can sustain up to 7 days without any sealing package. Moreover, the perovskite thin films can also be synthesized on flexible substrates with the total area up to 100 cm(2), paving a potential way for fabricating large-area and flexible random lasers in speckle-free laser projection and imaging.
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spelling pubmed-94191752022-09-20 Room-temperature random lasing of metal-halide perovskites via morphology-controlled synthesis Hong, Yu-Heng Kao, Tsung Sheng Nanoscale Adv Chemistry Film morphology and the corresponding structural configuration can profoundly affect the optical performance, especially the random lasing action in organic–inorganic metal-halide perovskite thin films. They can be controlled in both micro- and nano-scale by manipulating different processing parameters such as the ratios of engineered solvent mixtures, spin-coating speed and backplane temperature. With the optimized parameters, the synthesized bare perovskite thin films can achieve room-temperature random lasing action with the energy pumping threshold down to 0.9 mJ cm(−2) and the corresponding β factor is estimated to be about 0.14. The bare films also show a long-time lasing reliability, maintaining lasing intensity after an optical pumping of 12 × 10(5) pulses. Meanwhile, in the lifetime test under ambient conditions, the bare films can sustain up to 7 days without any sealing package. Moreover, the perovskite thin films can also be synthesized on flexible substrates with the total area up to 100 cm(2), paving a potential way for fabricating large-area and flexible random lasers in speckle-free laser projection and imaging. RSC 2020-10-31 /pmc/articles/PMC9419175/ /pubmed/36133894 http://dx.doi.org/10.1039/d0na00794c Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/
spellingShingle Chemistry
Hong, Yu-Heng
Kao, Tsung Sheng
Room-temperature random lasing of metal-halide perovskites via morphology-controlled synthesis
title Room-temperature random lasing of metal-halide perovskites via morphology-controlled synthesis
title_full Room-temperature random lasing of metal-halide perovskites via morphology-controlled synthesis
title_fullStr Room-temperature random lasing of metal-halide perovskites via morphology-controlled synthesis
title_full_unstemmed Room-temperature random lasing of metal-halide perovskites via morphology-controlled synthesis
title_short Room-temperature random lasing of metal-halide perovskites via morphology-controlled synthesis
title_sort room-temperature random lasing of metal-halide perovskites via morphology-controlled synthesis
topic Chemistry
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9419175/
https://www.ncbi.nlm.nih.gov/pubmed/36133894
http://dx.doi.org/10.1039/d0na00794c
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