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Title: Enhancing the Power Output of Bifacial Solar Modules by Applying Effectively Transparent Contacts (ETCs) With Light Trapping

Abstract

We have performed a computational study on the enhancement of the power output of bifacial solar modules with effectively transparent contacts (ETCs). ETCs are triangular crosssectional silver grid fingers that redirect light to the active area of the solar cell, therefore mitigating grid finger shading losses. Furthermore, ETCs can be spaced densely leading to light trapping. We modeled bifacial silicon heterojunction solar modules with varying front and rear illumination and ETC coverages. We determined that shading losses can be almost fully mitigated and that light absorption can be increased by up to 4.7% compared with state-of-the-art screen-printed bifacial modules. Furthermore, we calculated that grid resistance and silver usage can be improved when using ETCs.

Authors:
ORCiD logo; ; ORCiD logo
Publication Date:
Research Org.:
Stanford Univ., CA (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Renewable Power Office. Solar Energy Technologies Office
OSTI Identifier:
1465624
Alternate Identifier(s):
OSTI ID: 1465625; OSTI ID: 1579874
Grant/Contract Number:  
EE0004946
Resource Type:
Published Article
Journal Name:
IEEE Journal of Photovoltaics
Additional Journal Information:
Journal Name: IEEE Journal of Photovoltaics Journal Volume: 8 Journal Issue: 5; Journal ID: ISSN 2156-3381
Publisher:
IEEE
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; Bifacial solar modules; effectively transparent contacts (ETCs); light trapping

Citation Formats

Saive, Rebecca, Russell, Thomas C. R., and Atwater, Harry A. Enhancing the Power Output of Bifacial Solar Modules by Applying Effectively Transparent Contacts (ETCs) With Light Trapping. United States: N. p., 2018. Web. doi:10.1109/JPHOTOV.2018.2844850.
Saive, Rebecca, Russell, Thomas C. R., & Atwater, Harry A. Enhancing the Power Output of Bifacial Solar Modules by Applying Effectively Transparent Contacts (ETCs) With Light Trapping. United States. doi:10.1109/JPHOTOV.2018.2844850.
Saive, Rebecca, Russell, Thomas C. R., and Atwater, Harry A. Sat . "Enhancing the Power Output of Bifacial Solar Modules by Applying Effectively Transparent Contacts (ETCs) With Light Trapping". United States. doi:10.1109/JPHOTOV.2018.2844850.
@article{osti_1465624,
title = {Enhancing the Power Output of Bifacial Solar Modules by Applying Effectively Transparent Contacts (ETCs) With Light Trapping},
author = {Saive, Rebecca and Russell, Thomas C. R. and Atwater, Harry A.},
abstractNote = {We have performed a computational study on the enhancement of the power output of bifacial solar modules with effectively transparent contacts (ETCs). ETCs are triangular crosssectional silver grid fingers that redirect light to the active area of the solar cell, therefore mitigating grid finger shading losses. Furthermore, ETCs can be spaced densely leading to light trapping. We modeled bifacial silicon heterojunction solar modules with varying front and rear illumination and ETC coverages. We determined that shading losses can be almost fully mitigated and that light absorption can be increased by up to 4.7% compared with state-of-the-art screen-printed bifacial modules. Furthermore, we calculated that grid resistance and silver usage can be improved when using ETCs.},
doi = {10.1109/JPHOTOV.2018.2844850},
journal = {IEEE Journal of Photovoltaics},
number = 5,
volume = 8,
place = {United States},
year = {2018},
month = {9}
}

Journal Article:
Free Publicly Available Full Text
Publisher's Version of Record
DOI: 10.1109/JPHOTOV.2018.2844850

Citation Metrics:
Cited by: 1 work
Citation information provided by
Web of Science

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