【摘 要】
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Miniaturized lasers at the micro-and nanoscale are highly attractive for applications in sensing,lighting,display,and highly-integrated photonic devices because
【机 构】
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College of Materials Science and Engineering,Shenzhen University,Shenzhen 518060,China;School of Che
论文部分内容阅读
Miniaturized lasers at the micro-and nanoscale are highly attractive for applications in sensing,lighting,display,and highly-integrated photonic devices because of their advantages of low noise and good spectral purity[1-3].Since the first demon-stration of amplified spontaneous emission(ASE)behavior in solu-tion-based CH3NH3PbX3 perovskite film in 2014[4],both pulsed and continuous-wave(CW)lasing have been realized in various metal halide perovskites due to their superior attributes[5,6].Despite their better stability and higher exciton binding energy[7],CW lasing from quasi-two-dimensional(2D)perovskites has not been achieved because of the“lasing death”phenomenon(the sudden termination of lasing under constant operation).The mechanism leading to the lasing death phenomenon is still unclear,although some researchers have ascribed it to auger recombination loss,thermal runaway,or photoinduced structural change[8-10].
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