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Fabry–Pérot Oscillation and Room Temperature Lasing in Perovskite Cube‐Corner Pyramid Cavities
Small ( IF 13.0 ) Pub Date : 2018-01-10 , DOI: 10.1002/smll.201703136 Yang Mi 1 , Zhixiong Liu 2 , Qiuyu Shang 3 , Xinxiang Niu 4 , Jia Shi 1 , Shuai Zhang 1 , Jie Chen 1 , Wenna Du 1 , Zhiyong Wu 1 , Rui Wang 1 , Xiaohui Qiu 1 , Xiaoyong Hu 4 , Qing Zhang 3 , Tom Wu 2 , Xinfeng Liu 1
Small ( IF 13.0 ) Pub Date : 2018-01-10 , DOI: 10.1002/smll.201703136 Yang Mi 1 , Zhixiong Liu 2 , Qiuyu Shang 3 , Xinxiang Niu 4 , Jia Shi 1 , Shuai Zhang 1 , Jie Chen 1 , Wenna Du 1 , Zhiyong Wu 1 , Rui Wang 1 , Xiaohui Qiu 1 , Xiaoyong Hu 4 , Qing Zhang 3 , Tom Wu 2 , Xinfeng Liu 1
Affiliation
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Recently, organometal halide perovskite‐based optoelectronics, particularly lasers, have attracted intensive attentions because of its outstanding spectral coherence, low threshold, and wideband tunability. In this work, high‐quality CH3NH3PbBr3 single crystals with a unique shape of cube‐corner pyramids are synthesized on mica substrates using chemical vapor deposition method. These micropyramids naturally form cube‐corner cavities, which are eminent candidates for small‐sized resonators and retroreflectors. The as‐grown perovskites show strong emission ≈530 nm in the vertical direction at room temperature. A special Fabry–Pérot (F–P) mode is employed to interpret the light confinement in the cavity. Lasing from the perovskite pyramids is observed from 80 to 200 K, with threshold ranging from ≈92 µJ cm−2 to 2.2 mJ cm−2, yielding a characteristic temperature of T0 = 35 K. By coating a thin layer of Ag film, the threshold is reduced from ≈92 to 26 µJ cm−2, which is accompanied by room temperature lasing with a threshold of ≈75 µJ cm−2. This work advocates the prospect of shape‐engineered perovskite crystals toward developing micro‐sized optoelectronic devices and potentially investigating light–matter coupling in quantum optics.
中文翻译：
钙钛矿立方角锥腔中的法布里-佩罗特振荡和室温振荡
近年来，基于有机金属卤化物钙钛矿的光电技术，尤其是激光，因其出色的光谱相干性，低阈值和宽带可调性而受到了广泛的关注。在这项工作中，高质量的CH 3 NH 3 PbBr 3使用化学气相沉积法在云母基底上合成具有独特形状的立方角金字塔的单晶。这些微金字塔自然会形成立方角腔，是小型谐振器和后向反射器的杰出候选者。刚生长的钙钛矿在室温下在垂直方向上显示出约530 nm的强发射光。特殊的法布里-珀罗（F-P）模式用于解释腔中的光限制。从钙钛矿金字塔激射从80观察到200 K，与阈值范围从≈92 μ Ĵ厘米-2至2.2毫焦耳厘米-2，产生的特征温度Ť 0 = 35 K.通过涂覆Ag膜的薄层，阈值从≈92降低到26 µĴ厘米-2，这是伴随着室温≈75的阈值激射μ Ĵ厘米-2。这项工作提倡使用形状工程钙钛矿晶体来开发微型光电器件，并可能研究量子光学中的光-质耦合。
更新日期：2018-01-10
中文翻译：
钙钛矿立方角锥腔中的法布里-佩罗特振荡和室温振荡
近年来，基于有机金属卤化物钙钛矿的光电技术，尤其是激光，因其出色的光谱相干性，低阈值和宽带可调性而受到了广泛的关注。在这项工作中，高质量的CH 3 NH 3 PbBr 3使用化学气相沉积法在云母基底上合成具有独特形状的立方角金字塔的单晶。这些微金字塔自然会形成立方角腔，是小型谐振器和后向反射器的杰出候选者。刚生长的钙钛矿在室温下在垂直方向上显示出约530 nm的强发射光。特殊的法布里-珀罗（F-P）模式用于解释腔中的光限制。从钙钛矿金字塔激射从80观察到200 K，与阈值范围从≈92 μ Ĵ厘米-2至2.2毫焦耳厘米-2，产生的特征温度Ť 0 = 35 K.通过涂覆Ag膜的薄层，阈值从≈92降低到26 µĴ厘米-2，这是伴随着室温≈75的阈值激射μ Ĵ厘米-2。这项工作提倡使用形状工程钙钛矿晶体来开发微型光电器件，并可能研究量子光学中的光-质耦合。
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