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Adv Mater. 2017 Apr;29(16). doi: 10.1002/adma.201604781. Epub 2017 Feb 17.

High-Q, Low-Threshold Monolithic Perovskite Thin-Film Vertical-Cavity Lasers.

Author information

1
School of Engineering, Brown University, Providence, RI, 02912, USA.
2
Department of Electrical Engineering, Yale University, New Haven, CT, 06511, USA.
3
School of Engineering and Department of Physics, Brown University, Providence, RI, 02912, USA.

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.

KEYWORDS:

gain dynamics; nanoporous GaN; perovskites; quasi-steady state; vertical-cavities surface-emitting lasers

PMID:
28211117
DOI:
10.1002/adma.201604781

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