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Spatially Resolved Electrical Parameters of Si Solar Cells Using Quantitative Lock-In Carrierography

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Abstract

Electrical parameters (saturation current density and local series resistance) are critical to solar cells. In this work, 2-dimensional finite-element simulations were carried out to study the influence of local distributions of electrical parameters and broken fingers on luminescence images at various working conditions. The relationship between luminescence intensity and local diode implied voltage was identified by simulation results and also by lock-in carrierography/photoluminescence measurements on a silicon solar cell. Spatially resolved saturation current density (J0) and local series resistance (Rs) of the Si solar cell were realized by LIC. Influences of broken fingers on J0 and Rs were discussed. The LIC measurements were in accordance with 2D simulation results. The experiment results show that LIC, as a quantitative luminescence-based methodology, can be able to spatially resolve electrical parameters of silicon solar cells and PV modules.

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Acknowledgments

J.L. is grateful to the Foundation for Innovative Research Groups of the National Nature Science Foundation of China (Grant No. 51521003), to the Natural Science Foundation of China (Contract No. 61571153), and to the Program of Introducing Talents of Discipline of Universities (Grant No. B07108).

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Authors and Affiliations

  1. School of Instrumentation Science and Engineering, Harbin Institute of Technology, Harbin, 150001, China

    Peng Xiao, Peng Song & Xiaogang Sun

  2. School of Mechatronics Engineering, Harbin Institute of Technology, Harbin, 150001, China

    Junyan Liu

  3. State Key Laboratory of Robotics and System, Harbin Institute of Technology, Harbin, 150001, China

    Junyan Liu

Authors
  1. Peng Xiao
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  2. Peng Song
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  3. Junyan Liu
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  4. Xiaogang Sun
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Correspondence to Peng Song or Junyan Liu.

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This article is part of the selected papers presented at the 20th International Conference on Photoacoustic and Photothermal Phenomena.

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Xiao, P., Song, P., Liu, J. et al. Spatially Resolved Electrical Parameters of Si Solar Cells Using Quantitative Lock-In Carrierography. Int J Thermophys 41, 54 (2020). https://doi.org/10.1007/s10765-020-02635-6

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  • DOI: https://doi.org/10.1007/s10765-020-02635-6

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