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High efficiency InAlN-based solar cells

R. E. Jones, R. Broesler, K. M. Yu, J. W. Ager, E. E. Haller, W. Walukiewicz, X. Chen, W. J. Schaff

Research output: Chapters, Conference Papers, Creative and Literary WorksRGC 32 - Refereed conference paper (with host publication)peer-review

Abstract

The band gap energies of the In1-xAlxN alloys are continuously tunable across the solar spectrum, making them good candidates for high efficiency solar cells. In particular, multijunction solar cells could be fabricated entirely from different compositions of this one alloy system. From modeling experimental measurements of the optical absorption coefficient in alloys with 0 ≤ × ≤ 0.6, a band gap bowing parameter of 4.8 ± 0.5 eV is found for the alloy system. With this number, the alloy compositions for two and three junction tandem cells with maximum theoretical power conversion efficiencies can be determined. Two junction InAlN / Si solar cells are also promising structures for high efficiency solar cells, due to the properties of the interface between n-type InAlN and p-type Si, as well as the band gaps of the respective materials. The theoretical efficiency (detailed balance) for the In0.60Al0.40N / Si tandem cell is 41%. © 2008 IEEE.
Original languageEnglish
Title of host publication33rd IEEE Photovoltaic Specialists Conference
Subtitle of host publicationConference Proceedings
PublisherIEEE
Number of pages4
ISBN (Electronic)9781424416417
ISBN (Print)978-1-4244-1640-0
DOIs
Publication statusPublished - May 2008
Externally publishedYes
Event33rd IEEE Photovoltaic Specialists Conference (PVSC 2008) - Manchester Grand Hyatt, San Diego, CA, United States
Duration: 11 May 200816 May 2008

Publication series

Name
ISSN (Print)0160-8371

Conference

Conference33rd IEEE Photovoltaic Specialists Conference (PVSC 2008)
PlaceUnited States
CitySan Diego, CA
Period11/05/0816/05/08

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

  1. SDG 7 - Affordable and Clean Energy
    SDG 7 Affordable and Clean Energy

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