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. 2017 Mar 28;7:45391. doi: 10.1038/srep45391

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This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article’s Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/

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(a) Top view SEM image of a rectangle CH₃NH₃PbBr₃ microplate. (b) The emission spectrum of the microplate with the pumping density at 197 mJ/cm². The inset is the corresponding fluorescent microscope image. (c) The integrated output intensity as a function of pumping density. Inset shows the polarization of emitted laser in (b). (d) The numerical calculated cavity Q factors within the lasing wavelength range. The inset is the field pattern (Ez) of mode-1.