TMPA₂MnBr₄ single crystals

High-sensitivity X-ray detection

Structural modulation reduces carrier localization and enhances organic-inorganic coupling to establish multidimensional transport channels, enabling low detection limits and high operational stability.

Zhou, Faguang · Peng, Guoqiang · Li, Zhenhua · Jin, Zhiwen · Wang, Qian

Small 2026

Specifications

Sensitivity

{'zh': '1.04e5', 'en': '1.04e5'} µC Gy_air⁻¹ cm⁻²

Detection limit

{'zh': '72.6', 'en': '72.6'} nGy_air s⁻¹

Operational stability (accumulated dose)

{'zh': '8060', 'en': '8060'} µC Gy_air⁻¹ cm⁻²

Advantages

Enhanced carrier transport

Structural modulation reduces carrier localization within the inorganic polyhedron and enhances organic-inorganic coupling, establishing multidimensional carrier transport channels.

Lower detection limit

The detector achieves a detection limit of 72.6 nGy_air s⁻¹, suitable for low-dose X-ray imaging.

Stable at high temperature

The device exhibits superior operational stability with an accumulated dose of 8060 µC Gy_air⁻¹ cm⁻² at 373 K.

Applications

• X-ray detectors：Used as the active layer in high-sensitivity, low-detection-limit direct X-ray detectors.
• Direct X-ray imaging：Enable low-dose, high-resolution direct X-ray imaging.
• Medical imaging：Used in medical imaging to reduce radiation dose and improve image quality.