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Peer-reviewedCC BY 4.0Nanomaterials

Enhancing the Stability of Ag/CH3NH3PbBr3 Interfaces via AgBr Doping

  • Chao Wang1,2,3
  • Aiwu Yu4
  • Yuzhu Pan5
  • Yulian Zhang1,2
  • Jinbao Chen1,2
  • Xin Wang1,2
5 affiliations
  1. 1National Key Laboratory of Aerospace Mechanism, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
  2. 2College of Physics, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, China
  3. 3Shanghai Institute of Spacecraft Equipment, Shanghai 200240, China
  4. 4Shanghai Aerospace Equipments Manufacturer Co., Ltd., Shanghai 200245, China
  5. 5Key Laboratory of Semiconductor Display Materials and Chips, Suzhou Institute of Nano-Tech and Nano-Bionics, Chinese Academy of Sciences, Suzhou 215123, China
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Abstract

While CH3NH3PbBr3 (MAPbBr3) single crystals exhibit exceptional potential for biased X/γ-ray detection, achieving a stable metal–semiconductor contact remains a critical challenge. Herein, we address this issue by incorporating AgBr as a dopant into pristine MAPbBr3 single crystals prior to Ag electrode deposition. Our results reveal a concentration-dependent interfacial mechanism: while low-level doping introduces excess Br− ions and Pb vacancies that accelerate electrochemical corrosion, a high concentration of Ag+ within the lattice effectively suppresses the deleterious reaction between the Ag electrode and the perovskite. This work establishes a defect-engineering strategy to stabilize metal electrodes, offering a viable pathway for the development of reliable, high-performance MAPbBr3-based radiation detectors.

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Cite

BibTeXRIS
BibTeX
@article{wang2026enhancing,
  title = {{Enhancing the Stability of Ag/CH3NH3PbBr3 Interfaces via AgBr Doping}},
  author = {Chao Wang and Aiwu Yu and Yuzhu Pan and Yulian Zhang and Jinbao Chen and Xin Wang},
  journal = {Nanomaterials},
  year = {2026},
  month = oct,
  doi = {10.3390/nano16211379},
  url = {https://www.mdpi.com/2079-4991/16/21/1379},
  note = {CC BY 4.0},
}
RIS
TY  - JOUR
TI  - Enhancing the Stability of Ag/CH3NH3PbBr3 Interfaces via AgBr Doping
AU  - Chao Wang
AU  - Aiwu Yu
AU  - Yuzhu Pan
AU  - Yulian Zhang
AU  - Jinbao Chen
AU  - Xin Wang
PY  - 2026
DA  - 2026/10/28
JO  - Nanomaterials
DO  - 10.3390/nano16211379
UR  - https://www.mdpi.com/2079-4991/16/21/1379
AB  - While CH3NH3PbBr3 (MAPbBr3) single crystals exhibit exceptional potential for biased X/γ-ray detection, achieving a stable metal–semiconductor contact remains a critical challenge. Herein, we address this issue by incorporating AgBr as a dopant into pristine MAPbBr3 single crystals prior to Ag electrode deposition. Our results reveal a concentration-dependent interfacial mechanism: while low-level doping introduces excess Br− ions and Pb vacancies that accelerate electrochemical corrosion, a high concentration of Ag+ within the lattice effectively suppresses the deleterious reaction between the Ag electrode and the perovskite. This work establishes a defect-engineering strategy to stabilize metal electrodes, offering a viable pathway for the development of reliable, high-performance MAPbBr3-based radiation detectors.
SN  - 2079-4991
ER  -