Stable, Ultralow Threshold Amplified Spontaneous Emission from CsPbBr3 Nanoparticles Exhibiting Trion Gain Wang, Yi ; Zhi, Min ; Chang, Yu-Qiang ; Zhang, Jian-Ping ; Chan, Yinthai Abstract Publication: Nano Letters Pub Date: August 2018 DOI: 10.1021/acs.nanolett.8b01817 Bibcode: 2018NanoL..18.4976W