Minimum effect of non-infinitesmal intermediate band width on the detailed balance efficiency of an intermediate band solar cell

Michael Y. Levy, Chris Honsberg

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

3 Scopus citations

Abstract

This paper analyses the minimum deterioration of an intermediate band (IB) solar cell's conversion efficiency as a function of the IB's width. A central task in accomplishing this is to derive the emission spectrum of an IB material. The derivation is premised upon equilibria conditions and is derived under the stringent conditions that electronic transitions are limited to inter-band transitions coupled to photon emission or absorption. The resultant equilibrium emission spectrum is utilized to formulate expressions for the net photon flux and net power density absorbed by the IB material from a dual source solar geometry. Heuristic arguments are contrived to explain the relationship of the absorption coefficients and the absorptivity upon the conversion efficiency. Results indicate as the IB width increases, the conversion efficiency reduces to the limiting efficiency of a two-junction series-assembled tandem.

Original languageEnglish (US)
Title of host publicationConference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4
PublisherIEEE Computer Society
Pages71-74
Number of pages4
ISBN (Print)1424400163, 9781424400164
DOIs
StatePublished - Jan 1 2006
Externally publishedYes
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

ASJC Scopus subject areas

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

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    Levy, M. Y., & Honsberg, C. (2006). Minimum effect of non-infinitesmal intermediate band width on the detailed balance efficiency of an intermediate band solar cell. In Conference Record of the 2006 IEEE 4th World Conference on Photovoltaic Energy Conversion, WCPEC-4 (pp. 71-74). [4059564] (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.2006.279349