DataVXAdvanced Optical MaterialsPaper
journal article·2025-09

Ultralong Decay Lifetime for CsPbBr3 Perovskite Quantum Dots Glass

Ronghua Chen, Bin Zhuang, Jidong Lin, Tao Pang, Lingwei Zeng, Daqin Chen

Advanced Optical Materials· Volume 13· Issue 27
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Source abstract

Abstract

Abstract Embedding perovskite quantum dots (PeQDs) inside robust glass can address notorious instability issues, but the carrier dynamics in this kind of nanocomposite have not been well understood. In this work, different from the case of colloidal CsPbBr3 PeQDs, the photoluminescent (PL) decay lifetime of CsPbBr3@glass experiencing high‐temperature crystallization shows a giant elongation from nanoseconds (≈76 ns) to microseconds (≈2 µs). Temperature‐dependent time‐resolved PL spectra and femtosecond transient absorption (fs‐TA) spectra evidence that the defect states within the bandgap acting as carrier trapping centers are responsible for the observed ultralong lifetime. This allows carriers to return to the conduction band via thermal activation from the defect states and participate in radiative recombination. Exploring the mechanisms of ultra‐long fluorescence lifetimes in PeQDs@glass will provide deeper insights into their characteristics and offer new strategies for developing novel time‐domain optoelectronic applications.
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Research context

Ceramics & glassesNanomaterialsElectronic materials

OpenAlex topics: Perovskite Materials and Applications · Organic Light-Emitting Diodes Research · Random lasers and scattering media

SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.

Affiliations

College of Physics and Energy Fujian Provincial Key Laboratory of Quantum Manipulation and New Energy Materials Fujian Normal University Fuzhou Fujian 350117 P. R. China

Huzhou Key Laboratory of Materials for Energy Conversion and Storage College of Science Huzhou University Huzhou Zhejiang 313000 P. R. China

School of Chemistry and Chemical Engineering Key Laboratory of Theoretical Organic Chemistry and Functional Molecule of Ministry of Education Hunan University of Science and Technology Xiangtan 411201 P. R. China

Fujian Provincial Engineering Technology Research Center of Solar Energy Conversion and Energy Storage Fujian Normal University Fuzhou Fujian 350117 P. R. China

Funding

National Natural Science Foundation of China · Natural Science Foundation of Fujian Province

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