Minimizing shadow losses in III-nitride solar cells

Andrew Melton, Balakrishnam Jampana, Robert Opila, Christiana Honsberg, Muhammad Jamil, Ian Ferguson

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

Abstract

In this work InGa0.85N p-n homojunction solar cells were grown by MOCVD on GaN/sapphire substrates and fabricated using standard techniques. When illuminated from the backside, these devices showed 65.9% improvement in JSC and 4.4% improvement in VOC as compared to identical illumination from the front. These improvements arise from removal of the losses from electrical contact shading on the front of the devices (11.7% of active area), as well as significant optical absorption by the top current spreading layer. These improvements can likely be further enhanced by utilizing double-side polished wafers, which would eliminate scattering losses on the back surface. In addition to improving electrical characteristics of single cells, backside illumination is necessary for the realization of monolithic tandem InGaN solar cells.

Original languageEnglish (US)
Title of host publicationProceedings of SPIE - The International Society for Optical Engineering
Volume7409
DOIs
StatePublished - 2009
EventThin Film Solar Technology - San Diego, CA, United States
Duration: Aug 2 2009Aug 4 2009

Other

OtherThin Film Solar Technology
CountryUnited States
CitySan Diego, CA
Period8/2/098/4/09

Fingerprint

Nitrides
Solar Cells
nitrides
Solar cells
solar cells
Lighting
Aluminum Oxide
Metallorganic chemical vapor deposition
Volatile organic compounds
Sapphire
Light absorption
Illumination
illumination
MOCVD
Scattering
InGaN
homojunctions
Optical Absorption
Shading
volatile organic compounds

Keywords

  • III-nitrides
  • MOCVD
  • Solar cells

ASJC Scopus subject areas

  • Applied Mathematics
  • Computer Science Applications
  • Electrical and Electronic Engineering
  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Melton, A., Jampana, B., Opila, R., Honsberg, C., Jamil, M., & Ferguson, I. (2009). Minimizing shadow losses in III-nitride solar cells. In Proceedings of SPIE - The International Society for Optical Engineering (Vol. 7409). [740916] https://doi.org/10.1117/12.829264

Minimizing shadow losses in III-nitride solar cells. / Melton, Andrew; Jampana, Balakrishnam; Opila, Robert; Honsberg, Christiana; Jamil, Muhammad; Ferguson, Ian.

Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7409 2009. 740916.

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

Melton, A, Jampana, B, Opila, R, Honsberg, C, Jamil, M & Ferguson, I 2009, Minimizing shadow losses in III-nitride solar cells. in Proceedings of SPIE - The International Society for Optical Engineering. vol. 7409, 740916, Thin Film Solar Technology, San Diego, CA, United States, 8/2/09. https://doi.org/10.1117/12.829264
Melton A, Jampana B, Opila R, Honsberg C, Jamil M, Ferguson I. Minimizing shadow losses in III-nitride solar cells. In Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7409. 2009. 740916 https://doi.org/10.1117/12.829264
Melton, Andrew ; Jampana, Balakrishnam ; Opila, Robert ; Honsberg, Christiana ; Jamil, Muhammad ; Ferguson, Ian. / Minimizing shadow losses in III-nitride solar cells. Proceedings of SPIE - The International Society for Optical Engineering. Vol. 7409 2009.
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