Journal
CHEMISTRY OF MATERIALS
Volume 32, Issue 22, Pages 9602-9608Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acs.chemmater.0c03098
Keywords
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Funding
- Chinese Postdoctoral Science Foundation [2019 M661008]
- National Natural Science Foundation of China [52002269, 21833005, 21790364]
- Ministry of Science and Technology of China [2017YFA0204503]
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Large-area multicolor laser arrays on the nano- to microscale are key components for the development of on-chip nanophotonics and next-generation color display technology, which remain a formidable task owing to the material lattice mismatch and low-resolution patterning techniques. Here, we demonstrated multicolor-amplified spontaneous emission (ASE) arrays on single-chip integration by patterning CsPbX3 (X = Cl, Br, and I) quantum dot films through a rapid vapor-phase halide ion exchange strategy. Stoichiometrically tunable ASEs were achieved across the whole visible spectral range with similar low thresholds. When the multicolor ASE arrays were further miniaturized to microscale, a spatial definition of 12.5 mu m could be achieved, corresponding to an image resolution of up to 2030 pixel per inch.
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