Journal
SCIENCE BULLETIN
Volume 63, Issue 23, Pages 1576-1582Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.scib.2018.11.014
Keywords
Deterministic transfer; CsPbI3 nanocrystals; PDMS substrate; CVD
Categories
Funding
- National Natural Science Foundation of China [61875001, 61521004, 61874003, 11474007]
- National Key Research and Development Program of China [2018YFA0306900, 2017YFA0206301]
- Beijing Natural Science Foundation [4182028]
- National Basic Research Program of China [2013CB921901]
- 1000 Youth Talent Plan Fund
- Elemental Strategy Initiative
- CREST [JPMJCR15F3]
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Solid-state perovskite nanocrystals are promising coherent light sources, as there is optical feedback within the crystal structure. In order to utilize the high performance of perovskites for on-chip applications, or observe new physical phenomena, these crystals must be integrated with pre-fabricated electronic or photonic structures. However, the material's fragility has made the deterministic transfer a great challenge thus far. Here, we report the first deterministic transfer of perovskite nanocrystals with sub-micron accuracy. Cesium lead halide (CsPbI3) nanocrystals were directly synthesized on flexible polydimethylsiloxane (PDMS) stamps via chemical vapor deposition (CVD) and subsequently transferred onto arbitrary substrates/structures. We demonstrated the transfer of a CsPbI3 crystalline nanoplate (NP) onto an 8 mu m fiber core and achieved single-mode whispering gallery mode lasing. Our method can be extended to a variety of other arbitrary substrates (e.g., electrodes, photonic structures, micromechanical systems), laying the foundations for previously unattainable opportunities in perovskites-based devices. (C) 2018 Science China Press. Published by Elsevier B.V. and Science China Press. All rights reserved.
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