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Full‐Spectrum Persistent Luminescence Tuning Using All‐Inorganic Perovskite Quantum Dots
Author(s) -
Gong Zhongliang,
Zheng Wei,
Gao Yu,
Huang Ping,
Tu Datao,
Li Renfu,
Wei Jiaojiao,
Zhang Wen,
Zhang Yunqin,
Chen Xueyuan
Publication year - 2019
Publication title -
angewandte chemie
Language(s) - English
Resource type - Journals
eISSN - 1521-3757
pISSN - 0044-8249
DOI - 10.1002/ange.201901045
Subject(s) - afterglow , phosphor , luminescence , persistent luminescence , optoelectronics , materials science , quantum dot , visible spectrum , perovskite (structure) , wavelength , nanotechnology , photochemistry , chemistry , physics , crystallography , gamma ray burst , thermoluminescence , astronomy
Abstract Applications of persistent luminescence phosphors as night or dark‐light vision materials in many technological fields have fueled up a growing demand for rational control over the emission profiles of the phosphors. This, however, remains a daunting challenge. Now a unique strategy is reported to fine‐tune the persistent luminescence by using all‐inorganic CsPbX 3 (X=Cl, Br, and I) perovskite quantum dots (PeQDs) as efficient light‐conversion materials. Full‐spectrum persistent luminescence with wavelengths covering the entire visible spectral region is achieved through tailoring of the PeQD band gap, in parallel with narrow bandwidth of PeQDs and highly synchronized afterglow decay owing to the single energy storage source. These findings break through the limitations of traditional afterglow phosphors, thereby opening up opportunities for persistent luminescence materials for applications such as a white‐emitting persistent light source and dark‐light multicolor displays.