Study of the physical and chemical origin of features observed in luminescence and thermography images of Cu(In,Ga)Se2

Kingma, Aldo; Naziris, Frideriki; Bakker, Klaas; Mack, Karolina; Huhn, Vito; Theelen, Mirjam

doi:10.1016/j.solmat.2021.111145

Cited by 2 publications

(2 citation statements)

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“…We present an analysis of a CIGS mini-module by employing a system capable of both biased thermography and LIT. Through a comparison analysis, we demonstrate the efficacy of these two techniques and identify scenarios in which biased thermography performed adequately [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19]. We also provide an in-depth discussion of the advantages and limitations of each thermography method when diagnosing shunt defects in CIGS modules.…”

Section: Introductionmentioning

confidence: 96%

“…However, there remains a challenge in many laboratories where commercially available LIT systems are used without a comprehensive understanding of the respective strengths and drawbacks of each method. This study aimed to address this knowledge gap by conducting a comparative analysis of biased thermography and LIT, focusing on investigating shunt defects in CIGS modules [4][5][6][7][8][9][10][11][12][13][14][15][16][17][18][19].…”

Section: Introductionmentioning

confidence: 99%

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The Diagnosis of Shunt Defects in CIGS Modules Using Lock-In Thermography: An Empirical Comparative Study

Lee,

Kim

et al. 2023

Energies

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Shunt defects are often detected in solar panels intended for photovoltaic applications. However, existing nondestructive detection technologies have certain inherent drawbacks depending on the application scenario. In this context, this paper reports a comprehensive empirical investigation into lock-in thermography (LIT) and its applicability to diagnosing shunt defects in copper indium gallium selenide (CIGS) solar modules. LIT was compared with biased thermography, and its distinctive attributes were elucidated. The comparison results demonstrate the superior capabilities of LIT at enhancing the signal-to-noise ratio, improving the visibility, resolution, and quantification of defects, and highlighting the usefulness of LIT for advanced defect analysis. We explored scenarios in which biased thermography could be appropriate despite its inherent limitations and identified conditions under which it might be preferred. The complex thermal behavior of different types of defects under various voltage conditions was analyzed, contributing to a more nuanced understanding of their behavior. Thus, integrating experimental results and theoretical understanding, we provide valuable insights and scientific guidelines for photovoltaic research. Our findings could help enhance the efficiency of defect detection in CIGS modules, highlighting the critical role of optimized thermographic techniques in developing photovoltaic technologies.

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