September 10, 2025Open Access

Ultrasensitive Photodetector Enabled by Atomic-Level Optimization of Graphene-based Heterojunctions

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The novel photodetector demonstrates photoresponsivity over 10 million A/W, suggesting significant advancements in sensing applications.

Achieving a photoresponsivity of ~10⁷ A/W, this photodetector surpasses all current models.
Under 3 nW illumination, the photodetector outperforms existing technologies by over one order of magnitude.
Atomic-level optimization of heterojunctions is key for enhanced charge transport and sensitivity.
This technology provides potential applications in intelligent sensing and aerospace technologies.

Fang et al. (2025) studied this question.

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