期刊
NANO ENERGY
卷 77, 期 -, 页码 -出版社
ELSEVIER
DOI: 10.1016/j.nanoen.2020.105043
关键词
Strongly-ligated perovskite quantum dots; Controlled dimensions and architectures; Meniscus-assisted self-assembly; CsPbBr3; White LEDs
类别
资金
- AFOSR [FA9550-19-1-0317]
- NSF [CMMI 1727313, 1914713, CBET 1803495, ECCS 1914562]
- National Natural Science Foundation of China [21922503]
- Directorate For Engineering
- Div Of Civil, Mechanical, & Manufact Inn [1914713] Funding Source: National Science Foundation
Despite impressive advances in the synthesis of perovskite quantum dots (PQDs), the ability to craft PQDs of the same dimension yet different architectures (e.g., solid vs. hollow) remains a grand challenge. Moreover, precise control over the architectures and assemblies of PQDs renders new optical and optoelectronic properties. Herein, we report on a robust amphiphilic star-like block copolymer nanoreactor strategy to rapidly create monodisperse solid and hollow PQDs of the same external diameter in-situ. The dimension of PQDs can be readily regulated by utilizing star-like copolymers. Compared to solid PQDs, as the inner diameter of hollow PQDs increases, their photoluminescence progressively blue-shifts. Moreover, stripe patterns of PQDs can be conveniently formed via meniscus-assisted self-assembly (MASA) and subsequently anion-exchanged to yield multi-colored stripes with a heterostructured transition zone. Conceptually, an array of PQDs including all inorganic lead-free and organic-inorganic PQDs, can be easily accessed for applications in lasers, LEDs, and solar cells.
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