Issue 18, 2025

Toward flexible and omnidirectional self-powered near-ultraviolet photodetection by constructing a mixed-dimensional nanobelt/nanosheet heterojunction of CdS/PbI2

Abstract

Owing to the growing demand for scaling down and low-power consumption in the Internet of Things and wearable devices, there is an increasing need for miniaturized, self-powered flexible optoelectronics with omnidirectional photodetection ability. In this work, a mixed-dimensional heterojunction near-ultraviolet photodetector of CdS nanobelts/PbI2 nanosheets was prepared via chemical vapor deposition and liquid-phase growth methods. Importantly, the as-fabricated self-powered near-ultraviolet photodetector displayed a low Idark of 7 × 10−14 A, high Ilight/Idark ratio of 2.06 × 103, fast rise/decay times of 581 μs/581 μs and exceptional responsivity and detectivity of 3446.04 mA W−1 and 9.05 × 109 Jones, respectively, benefiting from the built-in field. In addition, the flexible near-ultraviolet photodetector exhibited impressive omnidirectional photodetection and robust bending endurance. Thus, all these results reveal the technological potential of the mixed-dimensional photodetector for next-generation high-performance near-ultraviolet optoelectronics.

Graphical abstract: Toward flexible and omnidirectional self-powered near-ultraviolet photodetection by constructing a mixed-dimensional nanobelt/nanosheet heterojunction of CdS/PbI2

Supplementary files

Article information

Article type
Communication
Submitted
18 Feb 2025
Accepted
08 Apr 2025
First published
09 Apr 2025

Nanoscale, 2025,17, 11322-11328

Toward flexible and omnidirectional self-powered near-ultraviolet photodetection by constructing a mixed-dimensional nanobelt/nanosheet heterojunction of CdS/PbI2

J. Wan, S. Gao, Y. Xu, Z. Sa, G. Wang, X. Du, M. Xu, Y. Yin and Z. Yang, Nanoscale, 2025, 17, 11322 DOI: 10.1039/D5NR00712G

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements