Issue 48, 2017

Multi-color perovskite nanowire lasers through kinetically controlled solution growth followed by gas-phase halide exchange

Abstract

Integration of multi-color semiconductor nanowire lasers (NWLs) on a silicon substrate is a very challenging task, owing to both the material lattice mismatch and the incompatible growth temperature. Recently, organic–inorganic perovskite (CH3NH3PbX3; X = Cl, Br, I) NWLs have been developed using a surface-initiated solution-growth method, which, however, requires post-synthesis transfer of nanowires from a growth substrate to a silicon wafer for device fabrication. Herein, we report multi-color perovskite nanowire lasers on arbitrary substrates (silicon or quartz substrates) through kinetically controlled growth followed by gas-phase halide exchange. First, we developed an antisolvent–vapor-diffusion induced crystallization method to kinetically direct the growth of CH3NH3PbCl3 towards single-crystal nanowires rather than the crystal habit of plate-like morphology. The ratio of nanowires to square microplates was adjusted to be as high as 97% : 3%. Then we introduced a gas-phase halide-anion-exchange reaction to convert chloride nanowires into bromide and iodide ones upon exposure to the vapor of HX (X = Br, I), while preserving both the high crystallinity and the nanowire morphology. Upon optical excitation, Fabry–Perot lasing around 550 and 785 nm occurs from CH3NH3PbBr3 and CH3NH3PbI3 nanowires with an onset of 9.8 and 9.2 μJ cm−2, respectively, with a maximum quality factor of 1260.

Graphical abstract: Multi-color perovskite nanowire lasers through kinetically controlled solution growth followed by gas-phase halide exchange

Supplementary files

Article information

Article type
Paper
Submitted
29 Leq 2017
Accepted
01 Xim 2017
First published
02 Xim 2017

J. Mater. Chem. C, 2017,5, 12707-12713

Multi-color perovskite nanowire lasers through kinetically controlled solution growth followed by gas-phase halide exchange

X. He, P. Liu, S. Wu, Q. Liao, J. Yao and H. Fu, J. Mater. Chem. C, 2017, 5, 12707 DOI: 10.1039/C7TC03939E

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