Metal oxide heterovalence multijunctions for third generation solar cells

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

Abstract

An approach to third-generation solar cells with a much better figure of merit, i.e., the efficiency/cost ratio, is proposed. It combines the advantages of low-cost wetchemical fabrication and high-efficiency inorganic crystalline solar cells. The materials which allow wetchemical fabrication of inorganic crystalline solar cells are semiconducting metal oxides. An analysis is presented on the challenges in utilizing metal oxides for third-generation solar cells, including the larger-than-optimum band gap and the high densities of native point defects in metal oxides. Strategies to overcome these challenges are outlined. Some of the metal oxides of interest include copper oxides and titanium oxides. The band gaps of copper oxides are around the optimum 1.4 eV for single-junction cells. For 50%-efficient multijunction tandem cells, titanium oxides of different valences offer a continuously-adjustable band gap of 0-3.5 eV, covering the entire solar spectrum!

Original languageEnglish (US)
Title of host publicationConference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4
PublisherIEEE Computer Society
Pages194-197
Number of pages4
ISBN (Print)1424400163, 9781424400164
DOIs
StatePublished - Jan 1 2006
Event2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4 - Waikoloa, HI, United States
Duration: May 7 2006May 12 2006

Publication series

NameConference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4
Volume1

Other

Other2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4
CountryUnited States
CityWaikoloa, HI
Period5/7/065/12/06

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ASJC Scopus subject areas

  • Renewable Energy, Sustainability and the Environment
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Materials Chemistry

Cite this

Meng, T. (2006). Metal oxide heterovalence multijunctions for third generation solar cells. In Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4 (pp. 194-197). [4059595] (Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4; Vol. 1). IEEE Computer Society. https://doi.org/10.1109/WCPEC.2006.279415