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Accurate Control of VS 2 Nanosheets for Coexisting High Photoluminescence and Photothermal Conversion Efficiency
Author(s) -
Zhou Yannan,
Xu Qun,
Ge Tianpei,
Zheng Xiaoli,
Zhang Li,
Yan Pengfei
Publication year - 2020
Publication title -
angewandte chemie international edition
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 5.831
H-Index - 550
eISSN - 1521-3773
pISSN - 1433-7851
DOI - 10.1002/anie.201912756
Subject(s) - photoluminescence , materials science , amorphous solid , photothermal therapy , absorption (acoustics) , nanotechnology , optoelectronics , chemistry , composite material , crystallography
In two‐dimensional (2D) amorphous nanosheets, the electron–phonon coupling triggered by localization of the electronic state as well as multiple‐scattering feature make it exhibit excellent performance in optical science. VS 2 nanosheets, especially single‐layer nanosheets with controllable electronic structure and intrinsic optical properties, have rarely been reported owing to the limited preparation methods. Now, a controllable and feasible switching method is used to fabricate 2D amorphous VS 2 and partial crystallized 2D VO 2 (D) nanosheets by altering the pressure and temperature of supercritical CO 2 precisely. Thanks to the strong carrier localization and the quantum confinement, the unique 2D amorphous structures exhibit full band absorption, strong photoluminescence, and outstanding photothermal conversion efficiency.