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Cited by 177Perovskite Materials and Applications2D Materials and ApplicationsOrganic Electronics and Photovoltaics

Enabling low-drift flexible perovskite photodetectors by electrical modulation for wearable health monitoring and weak light imaging

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Tang, Yingjie, Jin, Peng, Wang, Yan, Li, Dingwei, Chen, Yitong, Ran, Peng, Fan, Wei, Liang, Kun +5 more·2023·Nature Communications
DOI 10.1038/s41467-023-40711-1PMC PMC10432415

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Abstract

Abstract Metal halide perovskites are promising for next-generation flexible photodetectors owing to their low-temperature solution processability, mechanical flexibility, and excellent photoelectric properties. However, the defects and notorious ion migration in polycrystalline metal halide perovskites often lead to high and unstable dark current, thus deteriorating their detection limit and long-term operations. Here, we propose an electrical field modulation strategy to significantly reduce the dark current of metal halide perovskites-based flexible photodetector more than 1000 times (from ~5 nA to ~5 pA). Meanwhile, ion migration in metal halide perovskites is effectively suppressed, and the metal halide perovskites-based flexible photodetector shows a long-term continuous operational stability (~8000 s) with low signal drift (~4.2 × 10 −4 pA per second) and ultralow dark current drift (~1.3 × 10 −5 pA per second). Benefitting from the electrical modulation strategy, a high signal-to-noise ratio wearable photoplethysmography sensor and an active-matrix photodetector array for weak light imaging are successfully demonstrated. This work offers a universal strategy to improve the performance of metal halide perovskites for wearable flexible photodetector and image sensor applications.

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  • An electric field modulation strategy reduces the dark current of flexible metal halide perovskite photodetectors by over 1000-fold (from ~5 nA to ~5 pA) while suppressing ion migration, ensuring long-term operational stability (~8000 s) with minimal signal drift (~4.2×10-4 pA/s) and ultralow dark current drift (~1.3×10-5 pA/s).

    “Figure 2G shows an electric field modulation strategy that reduces the dark current of flexible metal halide perovskite photodetectors by over 1000-fold (from ~5 nA to ~5 pA) while suppressing ion migration [40].This approach ensured long-term operational stability (~8000 s) with minimal signal drift (~4.2 × 10 -4 pA/s) and ultralow dark current drift (~1.3 × 10 -5 pA/s).”

    From Design Strategies and Emerging Applications of Perovskite-Based Sensors (2025) · cites this paper as [40]

  • The electrical field modulation strategy enabled high-performance wearable PPG sensors and active-matrix photodetector arrays for weak light imaging.

    “The strategy enabled high-performance wearable PPG sensors and active-matrix photodetector arrays for weak light imaging, offering a universal approach to improve perovskite-based wearable and imaging sensors.”

    From Design Strategies and Emerging Applications of Perovskite-Based Sensors (2025) · cites this paper as [40]

  • An electrical field modulation strategy reduces the dark current of metal halide perovskite-based flexible photodetectors by over 1000 times.

    “Figure 13B illustrates an electrical field modulation strategy that reduces the dark current of metal halide perovskite-based flexible photodetectors by over 1000 times [40].”

    From Design Strategies and Emerging Applications of Perovskite-Based Sensors (2025) · cites this paper as [40]

  • A flexible perovskite photodetector modulated by electric fields is used for blood pulse signal detection, where volumetric changes in blood vessels modulate transmitted light intensity.

    “A flexible perovskite photodetector modulated by electric fields is used for blood pulse signal detection, where volumetric changes in blood vessels modulate transmitted light intensity.”

    From Design Strategies and Emerging Applications of Perovskite-Based Sensors (2025) · cites this paper as [40]

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Authors
Tang, Y., Jin, P., Wang, Y., Li, D., Chen, Y., Ran, P., Fan, W., Liang, K., Ren, H., Xu, X., Wang, R., Yang, Y., & Zhu, B.
Affiliations
  • Westlake University (CN)
  • State Key Laboratory of Modern Optical Instruments (CN)
Corresponding author
  • Yang, Yang
  • Zhu, Bowen
ORCID
Venue
Nature Communications
Publisher
Springer Science and Business Media LLC
Published
2023-08-16
Volume
14
Issue
1
Pages
4961-4961
ISSN
2041-1723 (ISSN-L)
DOI
10.1038/s41467-023-40711-1
PMC
PMC10432415
OpenAlex
W4385876952
Cited by
177
References
2
Citations by year
2026: 40 · 2025: 81 · 2024: 54 · 2023: 2
FWCI
13.15
Type
journal article
Language
en
Open access
Licence
Locations
  • Nature Communications (publishedVersion, cc-by)
  • Research Square (acceptedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • RePEc: Research Papers in Economics (submittedVersion)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
Funders
National Natural Science Foundation of China (62174138, 62074136, 61804134, 61874096)
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Perovskite Materials and Applications
  • Physical Sciences › Materials Science › Materials Chemistry › 2D Materials and Applications
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Organic Electronics and Photovoltaics
Keywords
halide perovskites, flexible photodetectors, dark current reduction, ion migration, signal drift, operational stability, wearable health monitoring, photoplethysmography, low-light imaging, image sensors

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