TY - JOUR
T1 - Perovskite quantum dots embedded paper photodetectors with high flexibility and self-powered operation
AU - Guan, Xinwei
AU - Huang, Chien-Yu
AU - Hu, Long
AU - Periyanagounder, Dharmaraj
AU - Lei, Zhihao
AU - Kim, Jiyun
AU - Rahaman, Md. Zahidur
AU - Huang, Jing-Kai
AU - Kumar, Prashant
AU - Lin, Chun-Ho
PY - 2024/4/28
Y1 - 2024/4/28
N2 - 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. © 2024 The Royal Society of Chemistry.
AB - 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. © 2024 The Royal Society of Chemistry.
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U2 - 10.1039/d4tc00508b
DO - 10.1039/d4tc00508b
M3 - RGC 21 - Publication in refereed journal
SN - 2050-7526
VL - 12
SP - 5784
EP - 5792
JO - Journal of Materials Chemistry C
JF - Journal of Materials Chemistry C
IS - 16
ER -