Quasi-CW Lasing from Directly Patterned and Encapsulated Perovskite Cavity at 260 K
Quasi-CW Lasing from Directly Patterned and Encapsulated Perovskite Cavity at 260 K
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DOI：
10.1021/acsphotonics.2c00071
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发表时间：
2022-05
期刊：
影响因子：
7
通讯作者：
Jiyoung Moon;Masoud Alahbakhshi;Abouzar Gharajeh;Quanwei Li;Zhitong Li;R. Haroldson;Sunah Kwon;R. Hawkins;M. Kim;Walter Hu;Xiang Zhang;A. Zakhidov;Q. Gu
中科院分区：
文献类型：
--
作者：
Jiyoung Moon;Masoud Alahbakhshi;Abouzar Gharajeh;Quanwei Li;Zhitong Li;R. Haroldson;Sunah Kwon;R. Hawkins;M. Kim;Walter Hu;Xiang Zhang;A. Zakhidov;Q. Gu
金属卤化物钙钛矿已经成为光子集成电路中片上激光器的有前途的增益材料。为了使这些成为商业上相关的经济的片上光源，准连续波（准CW）的明确开始，并最终在室温或Peltier冷却可达到的温度下从直接图案化的钙钛矿腔产生连续波（CW）激光是必须实现的关键里程碑。在此，通过直接图案化与纳米压印光刻和封装的腔与聚碳酸酯（PC）的薄层，准CW激光CH3NH3PbBr3（MAPbBr3）被证明高达260 K。PC层也被证明可以有效地封装MAPbBr 3的表面缺陷，并保护器件免受环境危害。通过对晶体质量、光泵浦过程中的退化过程、缺陷封装和激光器性能的综合分析，直接图案化钙钛矿腔的室温连续激光应该是可以实现的。
Metal halide perovskites have emerged as promising gain materials for on-chip lasers in photonic integrated circuits. For these to become commercially relevant as economical on-chip light sources, a clear onset of quasi-continuous wave (quasi-CW) and, eventually, continuous wave (CW) lasing at room temperature or Peltier-cooling accessible temperatures from directly patterned perovskite cavities is a critical milestone that must be achieved. Herein, through directly patterning with nanoimprint lithography and encapsulation of the cavity with a thin layer of polycarbonate (PC), quasi-CW lasing from CH3NH3PbBr3 (MAPbBr3) is demonstrated up to 260 K. The PC layer is also shown to effectively encapsulate the surface defects of MAPbBr3 and protect devices from environmental hazards. Through the combined analysis of the crystal quality, degradation process during optical pumping, defect encapsulation, and laser performance, room temperature CW lasing from directly patterned perovskite cavities should be within reach.