期刊
ACS NANO
卷 14, 期 3, 页码 3150-3158出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsnano.9b08314
关键词
three-dimensional patterning; perovskite nanocrystals; reversible photoluminescence; laser-assisted crystallization; femtosecond laser processing
类别
资金
- National Key R&D Program of China [YS2018YFB110012]
- National Natural Science Foundation of China [51772101, 51872095, 51722202]
- Guangdong Natural Science Foundation for Distinguished Young Scholars [S2014A030306045]
- Science and Technology Project of Guangdong Province [2017A010103037]
- Fundamental Research Funds for the Central Universities, Local Innovative and Research Teams Project of Guangdong Pearl River Talents Program [2017BT01X137]
- Program for Innovative Research Team in University of Ministry of Education of China [IRT_17R38]
The high-precision patterning of metal halide perovskites (MHPs) is of paramount importance for their device application. Here, we demonstrate the femtosecond (fs)-laser-assisted formation of three-dimensional MHP nanocrystal (NC) patterns with strong blue photoluminescence (PL) inside an oxide glass. Our strategy enables the crystallization and erasing of CsPb(Cl/Br)(3) NCs inside a glass localized around the laser focal area through a combination of fs laser irradiation and thermal treatment processes. These recoverable patterns exhibit a switchable PL associated with the laser-induced defect and the thermal healing of MHP NCs that are benefits from the soft ionic crystal structure and low formation energy of the MHPs. Due to the high stability offered by the protection of the oxide glass matrix, the laser printing of fine-structured MHP micropatterns can be repeated over multiple cycles with a high robustness compared with their colloidal demonstrate a simple strategy for creating emissive patterns inside a stable process counterparts. Our results and transparent solid matrix that could be promising for applications including information storage, three-dimensional displays, anticounterfeit labels, and information security protection.
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