Issue 36, 2016

Near-infrared random lasing realized in a perovskite CH3NH3PbI3 thin film

Abstract

In this paper, we present a detailed investigation on the optical properties of a solution-processed organic–inorganic halide perovskite CH3NH3PbI3 thin film. Using temperature-dependent photoluminescence measurements, a structural phase transition from the tetragonal to orthorhombic phase states was observed at a critical temperature of ∼160 K. Our results revealed an exciton binding energy of 45.5 ± 12.6 meV and an optical phonon energy of 37 ± 5.9 meV, along with an abnormal blue-shift of the bandgap in the high-temperature tetragonal phase. Interestingly, under high density optical pumping, a coherent random lasing action was observed at room-temperature with a threshold energy of 102 μJ cm−2, which can be ascribed to the high optical gain and strong multiple scattering provided by the polycrystalline gain boundary in random gain media. The results obtained on the unique optical properties of the CH3NH3PbI3 thin film support the potential of such organic–inorganic perovskites for use in novel and low-cost semiconductor laser applications.

Graphical abstract: Near-infrared random lasing realized in a perovskite CH3NH3PbI3 thin film

Supplementary files

Article information

Article type
Communication
Submitted
06 Jul 2016
Accepted
17 Aug 2016
First published
17 Aug 2016

J. Mater. Chem. C, 2016,4, 8373-8379

Near-infrared random lasing realized in a perovskite CH3NH3PbI3 thin film

Z. Shi, X. Sun, D. Wu, T. Xu, Y. Tian, Y. Zhang, X. Li and G. Du, J. Mater. Chem. C, 2016, 4, 8373 DOI: 10.1039/C6TC02818G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements