CH3NH3PbBr3 Perovskite Single-Crystal X-Ray Photon-Counting Detection Based on Multi-Layer Electrodes
CH3NH3PbBr3 (MAPbBr3) single crystals have shown great potential in X/γ-ray detection. However, stable electrodes for MAPbBr3 single crystals still remain challenging. In this work, multi-layer electrodes including Au, Au/Ti and Au/Pt/Ti are investigated. Through I-V characterization, Au/Pt/Ti shows Ohmic contact behavior and the lowest dark current. The potential contact is also confirmed by the Kelvin force probe. Based on these low-noise electrodes, 59.5 keV monochromatic X-ray photon-counting detection and imaging is demonstrated. This work provides useful information for electrode design in lead halide perovskite-based optoelectronic devices.
Authors
- Gangyi Chen (ORCID: https://orcid.org/0009-0008-4180-3762)
- S Wang
- J Chen
- Yuzhu Pan
- Qianqian Huang
- Yulian Zhang
- Xin Wang
- Hanwen Zhang
Institutions
- Chinese Academy of Sciences (CN)
- Suzhou Institute of Nano-tech and Nano-bionics (CN)
- Shanghai Power Equipment Research Institute (CN)
- Shanghai Aerospace Automobile Electromechanical (China) (CN)
- Hong Kong Metropolitan University (HK)
- Nanjing University of Aeronautics and Astronautics (CN)
Publication Details
- Journal
- Sensors
- Published
- 2026-05-11
- DOI
- https://doi.org/10.3390/s26103030
- Primary Topic
- Perovskite Materials and Applications
- Type
- article
- Field-Weighted Citation Impact
- 0.00
Funders
- National Natural Science Foundation of China