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High-Q, Low-Threshold Monolithic Perovskite Thin-Film Vertical-Cavity Lasers
Songtao Chen1, Cheng Zhang2, Joonhee Lee1
1School of Engineering, Brown University, Providence, RI, 02912, USA.
Advanced Materials (Deerfield Beach, Fla.)
|February 18, 2017
Abstract:
A vertical-cavity surface-emitting perovskite laser is achieved using a microcavity configuration where CH3 NH3 PbI3 thin solid films are embedded within a custom GaN-based high-quality (Q-factor) resonator. This single-mode perovskite laser reaches a low threshold (≈7.6 µJ cm-2 ) at room temperature and emits spatially coherent Gaussian laser beams. The devices allow direct access to the study of perovskite gain dynamics and material robustness.
