Random lasing in organo-lead halide perovskite microcrystal networks

R. Dhanker, A. N. Brigeman, A. V. Larsen, R. J. Stewart, John B. Asbury, Noel Christopher Giebink

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98 Scopus citations

Abstract

We report optically pumped random lasing in planar methylammonium lead iodide perovskite microcrystal networks that form spontaneously from spin coating. Low thresholds (<200 μJ/cm2) and narrow linewidths (Δλ < 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 μm 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.

Original languageEnglish (US)
Article number151112
JournalApplied Physics Letters
Volume105
Issue number15
DOIs
StatePublished - Oct 13 2014

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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