Covalent Self-Assembled Monolayer Passivation Enables Ultrahigh-Sensitivity and Ultrastable MAPbI 3 Single-Crystal X-Ray Detectors via Interfacial Dipole Engineering

Kexin Guo; Tao He; Dong Liu; Bin Lu; Dalin Li; Yuxin Li; Xi Zhang; Qian Chen; Danping Chen; Zheng Guo; Yaxue Wang; Feifei Guo; Zeliang Gao

doi:10.1039/d6mh00954a

January 1, 2026Materials Horizons

Covalent Self-Assembled Monolayer Passivation Enables Ultrahigh-Sensitivity and Ultrastable MAPbI 3 Single-Crystal X-Ray Detectors via Interfacial Dipole Engineering

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Key Points

This research aims to improve the performance of MAPbI3 single-crystal X-ray detectors by addressing issues related to dark current and non-radiative recombination.
Utilized covalent self-assembled monolayer passivation on MAPbI3 crystals.
Analyzed the impact of interfacial dipole engineering on detector performance.
Significant reduction in dark current achieved through passivation.
Enhanced sensitivity and stability observed in X-ray detection compared to unmodified detectors.

Implication

Demonstrates enhanced stability and sensitivity of MAPbI3 X-ray detectors, suggesting improved applications.

Abstract

Metal halide perovskite MAPbI3 single crystals are ideal candidates for next-generation direct-conversion X-ray detectors, but their practical applications are severely limited by high dark current, severe non-radiative recombination, and poor...

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Cite This Study

Guo et al. (2026) studied this question.

synapsesocial.com/papers/6a323cc9d50b63ecad206d89 https://doi.org/10.1039/d6mh00954a

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Covalent Self-Assembled Monolayer Passivation Enables Ultrahigh-Sensitivity and Ultrastable MAPbI 3 Single-Crystal X-Ray Detectors via Interfacial Dipole Engineering

Key Points

Implication

Abstract

Discussion

Cite This Study

Covalent Self-Assembled Monolayer Passivation Enables Ultrahigh-Sensitivity and Ultrastable MAPbI 3 Single-Crystal X-Ray Detectors via Interfacial Dipole Engineering

Key Points

Implication

Abstract

Discussion

Cite This Study

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