Journal
JOURNAL OF MATERIALS CHEMISTRY C
Volume 8, Issue 39, Pages 13642-13647Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/d0tc02551h
Keywords
-
Funding
- National Natural Science Foundation of China [61875256, 61675219]
- Nature Science Foundation of Shanghai [20JC1414605]
Ask authors/readers for more resources
Perovskite colloidal quantum dots (CQDs) enable a solution-processed approach toward lasers, 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 been proven to be challenging. Here we report broad-band single-mode lasers from solution-processed CsPbX3(X = Cl, Br, I) CQDs based on a high-quality zinc oxide microrod hexagonal whispering-gallery microcavity. A typical single-mode laser with ultra-narrow linewidth (similar to 0.21 nm, quality factor similar to 3000) at 11.7 mu J cm(-2)was obtained at 636 nm based on the conformal deposition of CsPb(Br0.5I0.5)(3)CQDs on an individual hexagonal zinc oxide microrod cavity with a radius of about similar to 776 nm. Moreover, by tuning the halogen ratio, synthesis 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.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available