Silicon heterojunction solar cells with plated contacts for low to medium concentration photovoltaics

C. Allebe, J. Levrat, J. Champliaud, M. Despeisse, A. Descoeudres, L. Barraud, A. Faes, A. Lachowicz, N. Badel, F. Debrot, J. Geissbuhler, S. De Wolf, C. Ballif

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review

Abstract

Silicon heterojunction (SHJ) technology enables high performance photovoltaics at acceptable cost. In this article, we show that this technology is also well suited for low to medium concentration applications. For this purpose, SHJ cells have been optimized and tested at different illumination levels and temperatures. An interesting increase of the efficiency temperature coefficient is observed with increasing illumination level. This behavior translates in improved performances of the tested SHJ devices under low to medium concentration applications, when operated at temperature above 25°C. This is linked to the behavior of the FF, exhibiting an improvement with increasing temperature while the cell is operated under high illumination level. This phenomenon suggests thermally assisted carrier transport through a barrier probably located at the TCO/p+ a-Si:H interface.

Original languageEnglish (US)
Title of host publication2015 IEEE 42nd Photovoltaic Specialist Conference, PVSC 2015
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479979448
DOIs
StatePublished - Dec 14 2015
Externally publishedYes
Event42nd IEEE Photovoltaic Specialist Conference, PVSC 2015 - New Orleans, United States
Duration: Jun 14 2015Jun 19 2015

Other

Other42nd IEEE Photovoltaic Specialist Conference, PVSC 2015
CountryUnited States
CityNew Orleans
Period06/14/1506/19/15

Keywords

  • concentration
  • heterojunction
  • silicon
  • solar cells
  • temperature coefficient

ASJC Scopus subject areas

  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials

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