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Structural Modulation Reduces Carrier Localization and Enhances Organic-Inorganic Coupling to Improve Charge
Faguang Zhou1, Guoqiang Peng1, Chenghan Jiang2
1School of Physical Science and Technology, Lanzhou Center for Theoretical Physics, Key Laboratory of Theoretical Physics of Gansu Province, Key Laboratory of Quantum Theory and Applications of MoE, Gansu Provincial Research Center for Basic Disciplines of Quantum Physics, Lanzhou University, Lanzhou, China.
Small (Weinheim an Der Bergstrasse, Germany)
|February 12, 2026
Summary
New hybrid manganese halide crystals enhance X-ray detector performance by improving charge transport between organic and inorganic components. This leads to highly sensitive and stable detectors for medical imaging.
Area of Science:
- Materials Science
- Solid-State Physics
- Chemistry
Background:
- Zero-dimensional (0D) organic-inorganic hybrid manganese halides (OIHMnHs) show promise for X-ray detection due to their properties.
- Limited carrier transport in OIHMnHs hinders detector performance.
- Enhancing organic-inorganic coupling is key to improving carrier transport.
Purpose of the Study:
- To investigate novel 0D TMPA2MnBr/Cl4 single crystals for X-ray detection.
- To enhance carrier transport by optimizing organic-inorganic coupling.
- To improve the sensitivity and stability of X-ray detectors.
Main Methods:
- Synthesis of 0D TMPA2MnBr/Cl4 single crystals.
- Theoretical calculations to understand carrier transport mechanisms.
- Fabrication and characterization of X-ray detectors using the synthesized materials.
Main Results:
- Theoretical calculations showed A-site cation contribution to CBM, facilitating carrier transport.
- Optimized TMPA2MnBr4 reduced carrier localization, enhancing organic-inorganic coupling.
- The detector achieved high sensitivity (1.04 × 10^5 µC Gyair^-1 cm^-2) and low detection limit (72.6 nGyair s^-1).
- Superior operational stability was observed (8060 µC Gyair^-1 cm^-2 at 373 K).
Conclusions:
- The developed TMPA2MnBr4 single crystals offer enhanced carrier transport for high-performance X-ray detection.
- These materials provide a foundation for environmentally friendly X-ray detectors with excellent thermal stability.
- The findings support the commercial viability of these detectors for medical imaging applications.
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