Jump to main content
Jump to site search
Access to RSC content Close the message box

Continue to access RSC content when you are not at your institution. Follow our step-by-step guide.

Broad-band lead halide perovskite quantum dot single-mode lasers


Perovskite colloidal quantum dots (CQDs) enable the solution-processed approach toward laser, simultaneously providing tunable wavelength, high quantum efficiency, large absorption cross-section, and long Auger lifetimes. However, broad-band single-mode lasers based on such CQDs have proven to be challenging. Here we report broad-band single-mode lasers from solution-processed CsPbX3 (X=Cl, Br, I) CQDs based on high-quality zinc oxide microrod hexagonal whispering-gallery microcavity. A typical single-mode laser with ultra-narrow linewidth (~ 0.21 nm, quality factor ~ 3000) at 11.7 μJ.cm-2 was obtained at 636 nm based on the conformal deposition of CsPb(BrxI1-x)3 CQDs on an individual hexagonal zinc oxide microrod cavity with radius size about ~ 776 nm. Moreover, by tuning the halogen ratio, synthesized temperature and the size of the zinc oxide microrods, broad-band tunable single-mode lasers are obtained across the entire visible spectrum from 417 nm to 723 nm. These results represent a significant step towards easy solution-processed broad-band tunable single-mode lasers.

Back to tab navigation

Supplementary files

Article information

28 May 2020
28 Aug 2020
First published
28 Aug 2020

J. Mater. Chem. C, 2020, Accepted Manuscript
Article type

Broad-band lead halide perovskite quantum dot single-mode lasers

C. Zhou, J. Yu, H. Dong, F. Yuan, X. Zheng, M. Jiang and L. Zhang, J. Mater. Chem. C, 2020, Accepted Manuscript , DOI: 10.1039/D0TC02551H

Social activity

Search articles by author