title: Vapor Growth and Tunable Lasing of Band Gap Engineered Cesium Lead Halide Perovskite Micro/Nanorods with Triangular Cross Section.
abstract: Although great efforts have been devoted to the synthesis of halide perovskites nanostructures, vapor growth of high-quality one-dimensional cesium lead halide nanostructures for tunable nanoscale lasers is still a challenge. Here, we report the growth of high-quality all-inorganic cesium lead halide alloy perovskite micro/nanorods with complete composition tuning by vapor-phase deposition. The as-grown micro/nanorods are single-crystalline with a triangular cross section and show strong photoluminescence which can be tuned from 415 to 673 nm by varying the halide composition. Furthermore, these single-crystalline perovskite micro/nanorods themselves function as effective Fabry-Perot cavities for nanoscale lasers. We have realized room-temperature tunable lasing of cesium lead halide perovskite with low lasing thresholds (∼14.1 μJ cm-2) and high Q factors (∼3500).
authors.affiliation: Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, and School of Physics and Electronics, Hunan University , Changsha 410082, P. R. China.
authors.forename: Hong
authors.initials: H
authors.lastname: Zhou
authors.affiliation: Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, and School of Physics and Electronics, Hunan University , Changsha 410082, P. R. China.
authors.forename: Shuangping
authors.initials: S
authors.lastname: Yuan
authors.affiliation: Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, and School of Physics and Electronics, Hunan University , Changsha 410082, P. R. China.
authors.forename: Xiaoxia
authors.initials: X
authors.lastname: Wang
authors.affiliation: SEU-FEI Nano-Pico Center, Key Lab of MEMS of Ministry of Education, Southeast University , Nanjing 210096, P. R. China.
authors.forename: Tao
authors.initials: T
authors.lastname: Xu
authors.affiliation: Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, and School of Physics and Electronics, Hunan University , Changsha 410082, P. R. China.
authors.forename: Xiao
authors.initials: X
authors.lastname: Wang
authors.affiliation: Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, and School of Physics and Electronics, Hunan University , Changsha 410082, P. R. China.
authors.forename: Honglai
authors.initials: H
authors.lastname: Li
authors.affiliation: Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, and School of Physics and Electronics, Hunan University , Changsha 410082, P. R. China.
authors.forename: Weihao
authors.initials: W
authors.lastname: Zheng
authors.affiliation: Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, and School of Physics and Electronics, Hunan University , Changsha 410082, P. R. China.
authors.forename: Peng
authors.initials: P
authors.lastname: Fan
authors.affiliation: Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, and School of Physics and Electronics, Hunan University , Changsha 410082, P. R. China.
authors.forename: Yunyun
authors.initials: Y
authors.lastname: Li
authors.affiliation: SEU-FEI Nano-Pico Center, Key Lab of MEMS of Ministry of Education, Southeast University , Nanjing 210096, P. R. China.
authors.forename: Litao
authors.initials: L
authors.lastname: Sun
authors.affiliation: Key Laboratory for Micro-Nano Physics and Technology of Hunan Province, State Key Laboratory of Chemo/Biosensing and Chemometrics, and School of Physics and Electronics, Hunan University , Changsha 410082, P. R. China.
authors.forename: Anlian
authors.identifier: 0000-0003-3335-3067
authors.initials: A
authors.lastname: Pan
keywords: cesium lead halide perovskites; triangular micro/nanorods; tunable lasers; vapor-phase growth