Optical loss analysis of four-terminal GaAs/Si tandem solar cells

Liu Z, Ren Z, Liu H, Sahraei N, Lin F, Stangl R, Buonassisi T, Peters IM (2017)

Publication Type: Conference contribution

Publication year: 2017

Publisher: Institute of Electrical and Electronics Engineers Inc.

Pages Range: 3269-3274

Conference Proceedings Title: 2017 IEEE 44th Photovoltaic Specialist Conference, PVSC 2017

Event location: Washington, DC, USA

ISBN: 9781509056057

DOI: 10.1109/PVSC.2017.8366420

Abstract

In this paper, we present a loss analysis for an in-house fabricated 4-terminal GaAs/Si tandem solar cell with a conversion efficiency of 21.3%. Current losses are broken down into ten loss channels and quantified. In order to predict the current gains from individual improvements, we set each parameter associated with one of the loss channels to its ideal value while keeping the other parameters constant. Using this loss analysis, the three most impactful losses, namely top cell metal grid reflection (3.40 mA/cm2), top cell window collection (2.06 mA/cm2) and reflection of the non-ideal antireflection coatings (1.96 mA/cm2), are identified and further optimization steps for the cell are suggested.

Involved external institutions

National University of Singapore (NUS) SG Singapore (SG) Singapore-MIT Alliance for Research and Technology (SMART) SG Singapore (SG)

How to cite

APA:

Liu, Z., Ren, Z., Liu, H., Sahraei, N., Lin, F., Stangl, R.,... Peters, I.M. (2017). Optical loss analysis of four-terminal GaAs/Si tandem solar cells. In 2017 IEEE 44th Photovoltaic Specialist Conference, PVSC 2017 (pp. 3269-3274). Washington, DC, USA: Institute of Electrical and Electronics Engineers Inc..

MLA:

Liu, Zhe, et al. "Optical loss analysis of four-terminal GaAs/Si tandem solar cells." Proceedings of the 44th IEEE Photovoltaic Specialist Conference, PVSC 2017, Washington, DC, USA Institute of Electrical and Electronics Engineers Inc., 2017. 3269-3274.

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