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Nano Research 2021, 14(9): 3208-3213 https://doi.org/10.1007/s12274-020-3254-2
Research Article | Issue | Published: 23 December 2020

Optoelectronic sensing of biophysical and biochemical signals based on photon recycling of a micro-LED

Show Author's Information He Ding1,  Guoqing Lv1,  Zhao Shi2,  Dali Cheng2,  Yang Xie2,  Yunxiang Huang3,  Lan Yin3,  Jian Yang1,  Yongtian Wang1,  Xing Sheng2( )
Beijing Engineering Research Center of Mixed Reality and Advanced Display, School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China
Department of Electronic Engineering, Beijing National Research Center for Information Science and Technology, Center for Flexible Electronics Technology, Tsinghua University, Beijing 100084, China
School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China
Keywords:
photoluminescence, optoelectronics, photon recycling, microscale light-emitting diodes (micro-LEDs), biosensors
Topics:
ElectrophysiologyPhotons
Cite this article:
Ding H, Lv G, Shi Z, et al. Optoelectronic sensing of biophysical and biochemical signals based on photon recycling of a micro-LED. Nano Research, 2021, 14(9): 3208-3213. https://doi.org/10.1007/s12274-020-3254-2
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Abstract Full text Electronic supplementary material About this article

Conventional bioelectrical sensors and systems integrate multiple power harvesting, signal amplification and data transmission components for wireless biological signal detection. This paper reports the real-time biophysical and biochemical activities can be optically captured using a microscale light-emitting diode (micro-LED), eliminating the need for complicated sensing circuit. Such a thin-film diode based device simultaneously absorbs and emits photons, enabling wireless power harvesting and signal transmission. Additionally, owing to its strong photon-recycling effects, the micro-LED’s photoluminescence (PL) emission exhibits a superlinear dependence on the external conductance. Taking advantage of these unique mechanisms, instantaneous biophysical signals including galvanic skin response, pressure and temperature, and biochemical signals like ascorbic acid concentration, can be optically monitored, and it demonstrates that such an optoelectronic sensing technique outperforms a traditional tethered, electrically based sensing circuit, in terms of its footprint, accuracy and sensitivity. This presented optoelectronic sensing approach could establish promising routes to advanced biological sensors.


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Electronic supplementary material
About this article

Optoelectronic sensing of biophysical and biochemical signals based on photon recycling of a micro-LED

Show Author's information He Ding1, Guoqing Lv1, Zhao Shi2, Dali Cheng2, Yang Xie2, Yunxiang Huang3, Lan Yin3, Jian Yang1, Yongtian Wang1, Xing Sheng2( )
Beijing Engineering Research Center of Mixed Reality and Advanced Display, School of Optics and Photonics, Beijing Institute of Technology, Beijing 100081, China
Department of Electronic Engineering, Beijing National Research Center for Information Science and Technology, Center for Flexible Electronics Technology, Tsinghua University, Beijing 100084, China
School of Materials Science and Engineering, Tsinghua University, Beijing 100084, China

Abstract

Conventional bioelectrical sensors and systems integrate multiple power harvesting, signal amplification and data transmission components for wireless biological signal detection. This paper reports the real-time biophysical and biochemical activities can be optically captured using a microscale light-emitting diode (micro-LED), eliminating the need for complicated sensing circuit. Such a thin-film diode based device simultaneously absorbs and emits photons, enabling wireless power harvesting and signal transmission. Additionally, owing to its strong photon-recycling effects, the micro-LED’s photoluminescence (PL) emission exhibits a superlinear dependence on the external conductance. Taking advantage of these unique mechanisms, instantaneous biophysical signals including galvanic skin response, pressure and temperature, and biochemical signals like ascorbic acid concentration, can be optically monitored, and it demonstrates that such an optoelectronic sensing technique outperforms a traditional tethered, electrically based sensing circuit, in terms of its footprint, accuracy and sensitivity. This presented optoelectronic sensing approach could establish promising routes to advanced biological sensors.

Keywords: photoluminescence, optoelectronics, photon recycling, microscale light-emitting diodes (micro-LEDs), biosensors

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Publication history
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Acknowledgements

Publication history

Received: 06 September 2020
Revised: 19 November 2020
Accepted: 21 November 2020
Published: 23 December 2020
Issue date: September 2021

Copyright

© Tsinghua University Press and Springer-Verlag GmbH Germany, part of Springer Nature 2020

Acknowledgements

Funding: the National Natural Science Foundation of China (NSFC) (No. 61874064); Beijing Institute of Technology Research Fund Program for Young Scholars; Beijing Innovation Center for Future Chips, Tsinghua University; Beijing National Research Center for Information Science and Technology (No. BNR2019ZS01005). The authors acknowledge characterization work supported by Beijing Institute of Technology Analysis & Testing Center. We also thank Nianzhen Du for the image design.

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