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

Rebecca Saive* (Corresponding Author), Thomas C.R. Russell, Harry A. Atwater

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

4 Citations (Scopus)
4 Downloads (Pure)

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 cross-sectional 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.

Original languageEnglish
Article number8396847
Pages (from-to)1183-1189
Number of pages7
JournalIEEE journal of photovoltaics
Volume8
Issue number5
DOIs
Publication statusPublished - 1 Sep 2018
Externally publishedYes

Keywords

  • Bifacial solar modules
  • effectively transparent contacts (ETCs)
  • light trapping

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