Double-heterojunction crystalline silicon solar cell fabricated at 250°C with 12.9 % efficiency

Sushobhan Avasthi, Ken A. Nagamatsu, Janam Jhaveri, William E. McClain, Gabriel Man, Antoine Kahn, Jeffrey Schwartz, Sigurd Wagner, James Christopher Sturm

Research output: Chapter in Book/Report/Conference proceedingConference contribution

18 Scopus citations

Abstract

Double-heterojunction crystalline silicon solar cells were fabricated at temperatures of <250°C using Si/organic and Si/metal-oxide heterojunctions, but no p-n junction in silicon. The first heterojunction, formed by spin-coating organic PEDOT:PSS on n-type silicon, functions as a front surface field that separates the photogenerated carriers and blocks electron dark-current while allowing hole photo-current to pass though. The second heterojunction, formed via metal-organic chemical vapor deposition of titanium dioxide on n-type silicon, functions as a back surface field that reduces hole dark-current while allowing electron photocurrent to pass through. Compared to a single heterojunction solar cell with only a Si/PEDOT heterojunction, the double-heterojunction device is more efficient with a power conversion efficiency of 12.9% under AM1.5.

Original languageEnglish (US)
Title of host publication2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014
PublisherInstitute of Electrical and Electronics Engineers Inc.
Pages949-952
Number of pages4
ISBN (Electronic)9781479943982
DOIs
StatePublished - Oct 15 2014
Event40th IEEE Photovoltaic Specialist Conference, PVSC 2014 - Denver, United States
Duration: Jun 8 2014Jun 13 2014

Publication series

Name2014 IEEE 40th Photovoltaic Specialist Conference, PVSC 2014

Other

Other40th IEEE Photovoltaic Specialist Conference, PVSC 2014
Country/TerritoryUnited States
CityDenver
Period6/8/146/13/14

All Science Journal Classification (ASJC) codes

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

Keywords

  • Heterojunction
  • Hybrid
  • Metal-oxide
  • Organic
  • PEDOT:PSS
  • Photovoltaics
  • Silicon
  • Solar
  • Titanium dioxide

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