Development of a Transparent Passivated Contact as a Front Side Contact for Silicon Heterojunction Solar Cells

Malte Kohler, Alexandr Zamchiy, Manuel Pomaska, Andreas Lambertz, Florian Lentz, Weiyuan Duan, Vladimir Smirnov, Friedhelm Finger, Uwe Rau, Kaining Ding

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

2 Citations (Scopus)

Abstract

We present a new transparent passivated contact concept utilizing microcrystalline silicon carbide and an ultra-thin silicon tunnel oxide ( \mu \mathrm{c} -SiC:H(n)/SiO) for the front side of silicon heterojunction solar cells. We investigated different oxidation agents in combination with selected deposition conditions of the \mu \mathrm{c} -SiC:H(n) to find the ideal parameters for high passivation quality and high conductivity. Implied open-circuit voltages up to 728 mV were achieved without any post-deposition treatment e.g. high temperature or forming gas annealing. The transparent passivated contact solar cells show increased quantum efficiency in the short wavelength range as compared to the conventional silicon heterojunction solar cells. These insights show the great potential for the transparent passivated contact front side.

Original languageEnglish
Title of host publication2018 IEEE 7th World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - A Joint Conference of 45th IEEE PVSC, 28th PVSEC and 34th EU PVSEC
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages3468-3472
Number of pages5
ISBN (Electronic)9781538685297
DOIs
Publication statusPublished - 26 Nov 2018
Event7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018 - Waikoloa Village, United States
Duration: 10 Jun 201815 Jun 2018

Conference

Conference7th IEEE World Conference on Photovoltaic Energy Conversion, WCPEC 2018
CountryUnited States
CityWaikoloa Village
Period10.06.201815.06.2018

Keywords

  • passivated contact
  • photovoltaic cells
  • selected contact
  • silicon
  • silicon carbide
  • transparent passivated contact
  • tunneling

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