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<p>Conventional infrared imaging systems rely heavily on external power supplies, limiting their applicability, flexibility, and portability. Here, we present a monolithically integrated photon-mapping near-infrared (780-900 nm) imager that operates in a self-driven mode, achieving a resolution of 5799 ppi and a frame rate of 18.5 kHz. The device vertically integrates multiple photovoltage-generating light-sensing units with a light-emitting unit in a cascaded configuration, enabling visible emission upon near-infrared excitation via internal carrier transfer. Its circuit-free architecture confers intrinsic flexibility and large-area scalability while remaining fully compatible with room-temperature operation. The system eliminates the need for pixel-level readout, thereby enabling spatial resolution beyond conventional pixel limits under optical excitation control. It further supports high-speed imaging governed by the transit dynamics of photogenerated carriers. In addition, its self-driven characteristic ensures inherently low background noise, enhancing the signal-to-background ratio and improving imaging quality. This work introduces a simplified, energy-efficient approach to infrared visualization.</p>

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Monolithically integrated photon-mapping infrared imager

  • 期刊论文

  • 出版模式：

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  • 发表日期：

    2026年5月26日

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  • Xingwei Han,
  • Jun Wang,
  • Lei Guo,
  • Shikun Duan,
  • Jiayue Han,
  • Meiyu He,
  • Chao Han,
  • He Yu,
  • Jun Gou,
  • Weida Hu

摘要

Conventional infrared imaging systems rely heavily on external power supplies, limiting their applicability, flexibility, and portability. Here, we present a monolithically integrated photon-mapping near-infrared (780-900 nm) imager that operates in a self-driven mode, achieving a resolution of 5799 ppi and a frame rate of 18.5 kHz. The device vertically integrates multiple photovoltage-generating light-sensing units with a light-emitting unit in a cascaded configuration, enabling visible emission upon near-infrared excitation via internal carrier transfer. Its circuit-free architecture confers intrinsic flexibility and large-area scalability while remaining fully compatible with room-temperature operation. The system eliminates the need for pixel-level readout, thereby enabling spatial resolution beyond conventional pixel limits under optical excitation control. It further supports high-speed imaging governed by the transit dynamics of photogenerated carriers. In addition, its self-driven characteristic ensures inherently low background noise, enhancing the signal-to-background ratio and improving imaging quality. This work introduces a simplified, energy-efficient approach to infrared visualization.