Jump to main content
Jump to site search


Bismuth halide perovskite derivatives for direct X-ray detection

Author affiliations

Abstract

Metal halide hybrid perovskites containing high atomic number (Z) elements have a large absorption cross-section for high-energy X-rays, and emerge as excellent semiconductors for direct X-ray detection. Here we report a new bismuth-based perovskite derivative (DMEDA)BiI5 (DMEDA2+: CH3NH3CH2CH2NH3CH32+) with one-dimensional crystal structure for X-ray detection. Thermogravimetric analysis shows that (DMEDA)BiI5 can withstand thermal treatment up to 287 °C. (DMEDA)BiI5 has a direct band gap of 1.82 eV, and a comparable X-ray attenuation coefficient to Cs2AgBiBr6 and MAPbI3. The fabricated photoconductive X-ray detector shows a stable baseline, which indicates that (DMEDA)BiI5 has a negligible ionic migration effect. The detection sensitivity toward X-ray radiation reaches 72.5 μC Gyair−1 cm−2.

Graphical abstract: Bismuth halide perovskite derivatives for direct X-ray detection

Back to tab navigation

Supplementary files

Article information


Submitted
18 Nov 2019
Accepted
17 Dec 2019
First published
19 Dec 2019

J. Mater. Chem. C, 2020, Advance Article
Article type
Communication

Bismuth halide perovskite derivatives for direct X-ray detection

L. Yao, G. Niu, L. Yin, X. Du, Y. Lin, X. Den, J. Zhang and J. Tang, J. Mater. Chem. C, 2020, Advance Article , DOI: 10.1039/C9TC06313G

Social activity

Search articles by author

Spotlight

Advertisements