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Highly sensitive fast-response near-infrared photodetectors based on triple cation Sn-Pb perovskite for pulse oximetry system

面向脉搏血氧监测系统的三元阳离子锡铅钙钛矿基高灵敏、快响应近红外光电探测器

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Abstract

Blood oxygen saturation has emerged as a crucial physiological parameter following electrocardiography, respiration, and blood pressure measurements. In this study, high-quality low bandgap triple cation Sn-Pb perovskite films are fabricated, with the preferred orientation and extended light absorption edge as far as 961 nm. By double-side interfacial modification, the PPPB (poly(3,4-ethylenedioxythiophene):poly(styrenesulfonate)/perovskite/[6,6]-phenyl-C61-butyric acid methyl ester/bathocuproine) near-infrared photodetector exhibits an enhanced photoresponse, with the ultra-fast response speed of 373 ns, wide linear dynamic range of 159 dB, high detectivity of 1.56 × 1011 Jones, and impressive responsivity of 190 mA W−1. Leveraging its exceptional photoelectric performance, the photodetector demonstrates its applicability in a pulse oximetry system, enabling the accurate and non-invasive assessment of heart rate and blood oxygen saturation across various physiological states. This work highlights the immense potential of our photodetector for real-time monitoring of blood oxygen saturation and heart rate.

摘要

血氧饱和度已成为继心电图、呼吸和血压后的一项用于健康评价的重要生理参数. 本研究中, 我们制备出高质量窄带隙三元阳离子Sn-Pb钙钛矿薄膜, 该光电薄膜呈现择优的生长晶向, 且光吸收截止边拓宽至961 nm. 通过双界面层修饰, 构建的PPPB (PEDOT:PSS/perovskite/PCBM/BCP)近红外光电探测器展现出增强的光电响应, 极快的响应速度(373 ns), 宽的线性动态范围(LDR = 159 dB), 高的比探测率(D* = 1.56 × 1011 Jones), 以及优异的光响应度(190 mA W−1). 基于器件出色的光电性能, 我们探索并演示了该探测器在脉搏血氧仪系统中的应用, 实现了对不同生理状态下心率和血氧饱和度的准确和非侵入性评估. 本研究突显了三元阳离子锡铅钙钛矿光探测器在实时监测血氧饱和度和心率方面的应用潜力.

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Acknowledgements

This work was supported by the National Natural Science Foundation of China (52172202), Guangdong Basic and Applied Basic Research Foundation (2023A1515030163 and 2022A1515010049), and the Science and Technology Planning Project of Guangzhou (201605030008).

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Author notes

  1. These authors contributed equally to this work.

Authors and Affiliations

  1. Siyuan Laboratory, Guangdong Provincial Engineering Technology Research Center of Vacuum Coating Technologies and New Energy Materials, Department of Physics, Jinan University, Guangzhou, 510632, China

    Yibo Lv  (吕一博), Guobiao Cen  (岑国标), Wanjun Li  (李婉君), Chuanxi Zhao  (赵传熙) & Wenjie Mai  (麦文杰)

  2. Guangdong Provincial Key Laboratory of Nanophotonic Manipulation, Jinan University, Guangzhou, 511443, China

    Chuanxi Zhao  (赵传熙) & Wenjie Mai  (麦文杰)

Authors
  1. Yibo Lv  (吕一博)
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  2. Guobiao Cen  (岑国标)
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  3. Wanjun Li  (李婉君)
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  4. Chuanxi Zhao  (赵传熙)
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  5. Wenjie Mai  (麦文杰)
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Contributions

Author contributions Lv Y and Cen G designed and engineered the samples; Zhao C and Mai W supervised the project; Lv Y, Cen G and Li W performed the experiments; Lv Y and Cen G wrote the paper with support from Zhao C and Mai W. All authors contributed to the general discussion.

Corresponding authors

Correspondence to Chuanxi Zhao  (赵传熙) or Wenjie Mai  (麦文杰).

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Conflict of interest The authors declare that they have no conflict of interest.

Additional information

Supplementary information Supporting data are available in the online version of the paper.

Wenjie Mai received his BS degree in physics (2002) from Peking University and his PhD degree in materials science and engineering (2009) from Georgia Institute of Technology. He is now a full professor at Jinan University (JNU). His main research interest includes energy conversion and storage devices, such as supercapacitors, batteries, and nanogenerators.

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40843_2023_2613_MOESM1_ESM.pdf

Highly Sensitive Fast-Response Near-Infrared Photodetectors based on Triple Cation Sn-Pb Perovskite for Pulse Oximetry System

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Lv, Y., Cen, G., Li, W. et al. Highly sensitive fast-response near-infrared photodetectors based on triple cation Sn-Pb perovskite for pulse oximetry system. Sci. China Mater. 66, 4704–4710 (2023). https://doi.org/10.1007/s40843-023-2613-5

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  • DOI: https://doi.org/10.1007/s40843-023-2613-5

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