Highly Luminescent and Stable Perovskite Quantum Dots Films for Light‐Emitting Devices and Information Encryption

The inherent flexibility and excellent mechanical strength of lead halide perovskite quantum dots (LHP‐QDs) films have attracted much attention in the fields of flexible lighting, displays, non‐planar x‐ray imaging, and wearable optoelectronics. Unfortunately, the complicated synthesis process and p...

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Bibliographic Details
Published in:Advanced functional materials 2024-07, Vol.34 (28), p.n/a
Main Authors: Ma, Cong, Zhang, Meiyun, Zhang, Jingru, Liao, Jianfei, Sun, Hao, Ji, Dexian, Pang, Ruixue, Zhang, Hui, Liu, Jiawei, Liu, Shengzhong (Frank)
Format: Article
Language:English
Subjects:
Aminopropyltriethoxysilane
Chemical bonds
Chemical synthesis
Flexibility
flexible films
high stability
Lead compounds
Light emitting diodes
light‐emitting devices
luminescence
Luminous intensity
Metal halides
Optoelectronics
perovskite quantum dots
Perovskites
Photoluminescence
Polysilsesquioxanes
Quantum dots
Water immersion
Water stability
White light
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Summary:The inherent flexibility and excellent mechanical strength of lead halide perovskite quantum dots (LHP‐QDs) films have attracted much attention in the fields of flexible lighting, displays, non‐planar x‐ray imaging, and wearable optoelectronics. Unfortunately, the complicated synthesis process and poor stability limit its practical applications, hence there is an urgent need to develop a feasible fabrication process for films to attain high device performance. Herein, a molecular level hybridization of bridged polysilsesquioxane (BPSQ) is designed as matrix to harvest both flexibility of organics and stability of inorganics, resulting in improved interfacial compatibility between the CsPbBr3 QDs and the matrix through chemical bond anchoring. The CsPbBr3@3‐aminopropyl‐triethoxysilane (APTES)@BPSQ films showcase bright narrow‐band photoluminescence, with a photoluminescence quantum yield of 61% and a half‐peak full width at half maximum of
ISSN:1616-301X
1616-3028
DOI:10.1002/adfm.202316717