Issue 16, 2024

Perovskite quantum dots embedded paper photodetectors with high flexibility and self-powered operation

Abstract

Metal halide perovskite quantum dots (QDs) with unique physicochemical properties are promising candidates for next-generation optoelectronics, but they often suffer from stability issues that severely limit their potential for practical applications. In this work, we adopt an oleic acid/oleylamine-free approach to synthesize MAPbBr3 quantum dot (MQD) papers by incorporating MQDs into cellulose nanofiber frameworks. The abundant long-chain binding ligands containing sulfate terminal groups within the cellulose nanofiber remarkably stabilize the MQD structure, enabling the fabrication of self-power and flexible MQD paper photodetectors with a responsivity of ∼0.19 mA W−1, detectivity of 1.58 × 108 cm Hz1/2 W−1, and excellent bendability and reliability after 500 bending cycles. More importantly, these MQD/cellulose-based self-powered photodetectors demonstrate extraordinarily high environmental stability, maintaining more than 90% of the initial responsivity after 60 days. The simple disposability of the paper-based device is also illustrated by burning within one second, suggesting the ease of device elimination. Our work provides a unique approach to designing ultra-stable perovskite QD-based electronics with unprecedented functionalities.

Graphical abstract: Perovskite quantum dots embedded paper photodetectors with high flexibility and self-powered operation

Supplementary files

Article information

Article type
Paper
Submitted
06 feb 2024
Accepted
18 mar 2024
First published
02 apr 2024

J. Mater. Chem. C, 2024,12, 5784-5792

Perovskite quantum dots embedded paper photodetectors with high flexibility and self-powered operation

X. Guan, C. Huang, L. Hu, D. Periyanagounder, Z. Lei, J. Kim, Md. Z. Rahaman, J. Huang, P. Kumar and C. Lin, J. Mater. Chem. C, 2024, 12, 5784 DOI: 10.1039/D4TC00508B

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