Achieving a high Short Circuit Current Density of 40.9 mA/cm2 for Two-Side Contacted Silicon Heterojunction Solar Cells by using SiC-based Transparent Passivating Contacts

Alexander Eberst, Alexandr Zamchiy, Kaifu Qiu, Andreas Lambertz, Weiyuan Duan, Shenghao Li, Karsten Bittkau, Stefan Haas, Friedhelm Finger, Thomas Kirchartz, Uwe Rau, Kaining Ding

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

Abstract

A silicon heterojunction solar cell using silicon carbide as front contact is presented, which features the main advantage of high transparency. To enhance this advantage, an optical loss analysis is performed. It is found that reflection losses play an important role for the solar cell, which can easily be reduced by applying an additional MgF2 coating. The deposition of the coating degrades the passivation quality of the contact but can be cured, eventually leading to a certified short circuit current density of 40.9 mA/cm2 and efficiency of 23.99%. Afterwards, a roadmap to a theoretical efficiency of 25% is presented.

Original languageEnglish
Title of host publication2021 IEEE 48th Photovoltaic Specialists Conference, PVSC 2021
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages300-302
Number of pages3
ISBN (Electronic)9781665419222
DOIs
Publication statusPublished - 20 Jun 2021
Event48th IEEE Photovoltaic Specialists Conference, PVSC 2021 - Fort Lauderdale, United States
Duration: 20 Jun 202125 Jun 2021

Publication series

NameConference Record of the IEEE Photovoltaic Specialists Conference
ISSN (Print)0160-8371

Conference

Conference48th IEEE Photovoltaic Specialists Conference, PVSC 2021
Country/TerritoryUnited States
CityFort Lauderdale
Period20.06.202125.06.2021

Keywords

  • passivating contact
  • silicon carbide
  • silicon solar cell
  • transparent passivating contact

OECD FOS+WOS

  • 2.02.IQ ENGINEERING, ELECTRICAL & ELECTRONIC
  • 2.11.IF ENGINEERING, MULTIDISCIPLINARY
  • 2.11.IJ ENGINEERING, INDUSTRIAL
  • 2.11.IK ENGINEERING, MANUFACTURING

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