Issue 44, 2023

Preparation of freestanding and ultrastable CsPbX3 perovskite quantum dots/SEBS composite films for curved and flexible surfaces

Abstract

All-inorganic CsPbX3 (X = Cl, Br, I) perovskite quantum dots (PQDs)/polymer composite films have been used widely in light-emitting devices. Most methods of fabricating CsPbX3 PQDs/polymer composite films cannot meet the diverse requirements of real applications, particularly with regard to depositing or transferring films on different substrate types, including non-planar surfaces. It is still a challenge to prepare freestanding CsPbX3 PQDs/polymer composite films and deposit them on various substrates (especially non-planar substrates). Here, we report a facile way to prepare freestanding CsPbX3 PQDs/poly(styrene–ethylene–butylene–styrene) (SEBS) composite films via an interfacial-confinement (IC) strategy. The as-obtained films were applicable to various substrates (even curved and flexible substrates) and exhibited excellent stability against various environments. These freestanding CsPbX3 PQDs/SEBS composite films could be patterned readily for anti-counterfeiting and information-encryption applications. They also could be employed as color-conversion materials for white light-emitting diodes (LEDs).

Graphical abstract: Preparation of freestanding and ultrastable CsPbX3 perovskite quantum dots/SEBS composite films for curved and flexible surfaces

Supplementary files

Article information

Article type
Paper
Submitted
27 Jul 2023
Accepted
18 Oct 2023
First published
18 Oct 2023

J. Mater. Chem. C, 2023,11, 15531-15540

Preparation of freestanding and ultrastable CsPbX3 perovskite quantum dots/SEBS composite films for curved and flexible surfaces

Y. Lv, S. Tu and M. Chen, J. Mater. Chem. C, 2023, 11, 15531 DOI: 10.1039/D3TC02654J

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