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September 27, 2025Laser & Photonics Review

Sub‐Bandgap Photon Harvesting in Cu2AgBiI6 Perovskite Enabling Self‐Powered Near‐Infrared Photodetection

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Authors

YHYayong HuHGHuiping GaoLFLuping Feng

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Overview

Experimental analysis confirms sub-bandgap states in Cu2AgBiI6 films, enabling efficient NIR photodetection.

Key Points

  • Self-powered photodetectors based on Cu2AgBiI6 show strong near-infrared photoresponses below the optical gap.
  • The optimized device achieved specific photodetectivity of 4.08 × 10^11 Jones under 808 nm light illumination at 0 V bias.
  • The incorporation of localized surface plasmon resonance enhances light harvesting and carrier transport dynamics.
  • This research highlights the potential of lead-free perovskites for innovative near-infrared sensors.

Cite This Study

Hu et al. (2025) studied this question.

synapsesocial.com/papers/68d7be66eebfec0fc5237d49https://doi.org/10.1002/lpor.202501533
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