期刊
PHOTONICS RESEARCH
卷 11, 期 6, 页码 1067-1074出版社
CHINESE LASER PRESS
DOI: 10.1364/PRJ.488164
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Blue-emitting perovskite microlasers with high-quality factor and tunable wavelength have been prepared in this study. The results of this study are of great significance for the application of blue laser fields.
Lead halide perovskite microlasers have shown impressive performance in the green and red wavebands. However, there has been limited progress in achieving blue-emitting perovskite microlasers. Here, blue-emitting perovskitephase rubidium lead bromide (RbPbBr3) microcubes were successfully prepared by using a one-step chemical vapor deposition process, which can be utilized to construct optically pumped whispering gallery mode microlasers. By regulating the growth temperature, we found that a high-temperature environment can facilitate the formation of the perovskite phase and microcubic morphology of RbPbBr3. Notably, blue single-mode lasing in a RbPbBr3 microcubic cavity with a narrow linewidth of 0.21 nm and a high-quality factor (& SIM;2200) was achieved. The obtained lasing from RbPbBr3 microlasers also exhibited an excellent polarization state factor (& SIM;0.77). By modulating the mixed-monovalent cation composition, the wavelength of the microlaser could be tuned from green (536 nm) to pure blue (468 nm). Additionally, the heat stability of the mix-cation perovskite was better than that of conventional CsPbBr3. The stable and high-performance blue single-mode microlasers may thus facilitate the application of perovskite lasers in blue laser fields.& COPY; 2023 Chinese Laser Press
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