Random lasing in organo-lead halide perovskite microcrystal networks

被引：134

作者：

Dhanker, R. ^{[1
]}

Brigeman, A. N. ^{[1
]}

Larsen, A. V. ^{[2
]}

Stewart, R. J. ^{[2
]}

Asbury, J. B. ^{[2
]}

Giebink, N. C. ^{[1
]}

机构：

[1] Penn State Univ, Dept Elect Engn, University Pk, PA 16802 USA

[2] Penn State Univ, Dept Chem, University Pk, PA 16802 USA

来源：

APPLIED PHYSICS LETTERS | 2014年 / 105卷 / 15期

关键词：

SOLAR-CELLS; SEQUENTIAL DEPOSITION; RANDOM LASERS; EFFICIENT;

D O I：

10.1063/1.4898703

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We report optically pumped random lasing in planar methylammonium lead iodide perovskite microcrystal networks that form spontaneously from spin coating. Low thresholds (<200 mu J/cm(2)) and narrow linewidths (Delta lambda < 0.5 nm) reflect lasing from closed quasi-modes that result from ballistic waveguiding in linear network segments linked by scattering at the junctions. Spatio-spectral imaging indicates that these quasi-modes extend over lateral length scales > 100 mu m and spatially overlap with one another, resulting in chaotic pulse-to-pulse intensity fluctuations due to gain competition. These results demonstrate this class of hybrid organic-inorganic perovskite as a platform to study random lasing with well-defined, low-level disorder, and support the potential of these materials for use in semiconductor laser applications. (C) 2014 AIP Publishing LLC.

引用

页数：5

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