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Miniaturized Self-Powered Perovskite Spectrometer.

Xuehan Zheng1, Zhen Guan2, Nan Zhang1

  • 1Beijing Engineering Research Center of Mixed Reality and Advanced Display, National Key Laboratory on Near-surface Detection, School of Optics and Photonics, Beijing Institute of Technology, Beijing, China.

Small (Weinheim an Der Bergstrasse, Germany)
|January 25, 2026
PubMed
Summary
This summary is machine-generated.

Researchers developed a low-power, high-resolution miniaturized spectrometer using perovskite materials. This self-powered system achieves high spectral resolution with few detectors, advancing spectral sensing applications.

Keywords:
compressed sensinggradient bandgap engineeringminiaturized spectrometersperovskitesself‐powered photodetectors

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Area of Science:

  • Materials Science
  • Optical Engineering
  • Spectroscopy

Background:

  • Miniaturized spectrometers are crucial for research and industry but struggle with low power consumption and high spectral resolution.
  • Current designs often require numerous spectral response units to maintain resolution, increasing complexity and size.

Purpose of the Study:

  • To develop a miniaturized, self-powered spectral sensing system with ultralow power consumption and high spectral resolution.
  • To leverage bandgap-tunable perovskite materials for enhanced photoelectric conversion and spectral sensing capabilities.

Main Methods:

  • Constructed a miniaturized self-powered polycrystalline perovskite spectral sensing system.
  • Employed reconstruction algorithms and dimensionality reduction to achieve high spectral resolution with only 8 photodetectors.
  • Demonstrated narrow-band spectral sensing in the 680-800 nm range.

Main Results:

  • Achieved a peak external quantum efficiency (EQE) of 75% in the perovskite device.
  • Obtained spectral resolutions of approximately 5 nm and average peak accuracies of 0.85 nm under low light intensity (<10 µW cm⁻²).
  • Photodetectors operated without external bias, minimizing power consumption.

Conclusions:

  • The developed perovskite spectral sensing system offers a promising solution for low-power, high-resolution miniaturized spectrometers.
  • This advancement facilitates practical applications in areas like hyperspectral imaging and portable spectral analysis.
  • The self-powered, high-efficiency design paves the way for next-generation spectral sensing technologies.