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September 27, 2025Advanced Optical Materials

Efficient and Low‐Noise Extended Shortwave Photodiodes Based on PbSe Colloidal Quantum Dots with Wide Depletion Width

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Authors

RCRuiguang ChangQYQiuyang YinLHLu Han

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Overview

Research reveals improved external quantum efficiency in photodiodes, indicating enhanced performance via doping. These findings have implications for advancing shortwave photodiode technology.

Key Points

  • The doping of PbS colloidal quantum dots with Ag increased the built-in potential to over 0.5 V.
  • External quantum efficiency improved significantly from 6.2% to 9.5% at zero bias.
  • Wider depletion width extended carrier lifetime and reduced high noise current.
  • The photodiodes achieved a specific detectivity of 4.8 × 10 10 Jones at λ = 2.5 µm.

Cite This Study

Chang et al. (2025) studied this question.

synapsesocial.com/papers/68d7be5eeebfec0fc523775ahttps://doi.org/10.1002/adom.202502242
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