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Low-threshold room-temperature continuous-wave optical lasing of single-crystalline perovskite in a distributed reflector microcavity

Organic–inorganic halide perovskites have achieved remarkable success in various optoelectronic devices. A high-quality CH(3)NH(3)PbBr(3) single-crystalline thin film has been directly grown in a micrometer gap between a pair of distributed reflectors with over 99.9% reflectivity, which naturally fo...

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Detalles Bibliográficos
Autores principales: Tian, Cheng, Tong guo, Zhao, Shiqi, Zhai, Wenhao, Ge, Chaoyang, Ran, Guangzhao
Formato: Online Artículo Texto
Lenguaje:English
Publicado: The Royal Society of Chemistry 2019
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9074939/
https://www.ncbi.nlm.nih.gov/pubmed/35540621
http://dx.doi.org/10.1039/c9ra07442b
Descripción
Sumario:Organic–inorganic halide perovskites have achieved remarkable success in various optoelectronic devices. A high-quality CH(3)NH(3)PbBr(3) single-crystalline thin film has been directly grown in a micrometer gap between a pair of distributed reflectors with over 99.9% reflectivity, which naturally form a vertical cavity surface-emitting laser device with a single mode or several modes. The single-crystalline perovskite has an exciton lifetime of 426 ns and evidence of the exciton–photon coupling is observed. At room temperature and under continuous-wave optical pumping conditions, this device lases at a threshold of 34 mW cm(−2) in the green gap. The extremely low lasing threshold suggests that polariton lasing may occur in the strongly confined optical cavity comprising the high-quality single-crystalline perovskite.