Issue 18, 2024

Kilogram-scale high-yield production of PbI2 microcrystals for optimized photodetectors

Abstract

Exploring a new material with optoelectronic properties and studying its phonon and photon properties are of great value for practical applications. Herein, we demonstrate a photodetector based on layered PbI2 microcrystals synthesized using a high-yield production strategy. The temperature-dependent Raman study further reveals a redshift of phonon frequencies with an increase in temperature. Both symmetric Au–PbI2–Au and asymmetric Au–PbI2-Graphene photodetectors were fabricated for comparing their photoresponse performance. Owing to the high Schottky barrier near Au electrodes, the symmetric Au–PbI2–Au photodetector exhibited a low dark current of ∼0.4 pA at 10 V. In contrast, the substitution of one Au electrode with graphene offered a smooth van der Waals contact with PbI2, contributing to a 3–4.8 fold increase in photocurrent compared with the Au–PbI2–Au photodetector under the same light intensity.

Graphical abstract: Kilogram-scale high-yield production of PbI2 microcrystals for optimized photodetectors

Supplementary files

Article information

Article type
Paper
Submitted
11 Mar 2024
Accepted
31 Mar 2024
First published
03 Apr 2024

J. Mater. Chem. C, 2024,12, 6433-6442

Kilogram-scale high-yield production of PbI2 microcrystals for optimized photodetectors

H. Sun, L. Su, Q. Zeng, Y. Pan, Z. Guo, K. An, Z. Xia, Z. Huang, F. Liu and H. Chen, J. Mater. Chem. C, 2024, 12, 6433 DOI: 10.1039/D4TC00966E

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