Benefits of Lambertian light distribution across widely deployed photovoltaic materials

Nicholas P. Irvin, Sean J. Babcock, Eric Y. Chen, Richard R. King, Christiana B. Honsberg

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

Abstract

Silicon solar cells benefit from an internal Lambertian light distribution achieved through texturing, while the performance of direct-bandgap materials can be lower with an internal Lambertian light distribution than the light distribution of a planar cell. A novel analytic expression is derived for the emittance of cells with a Lambertian light distribution and partial rear reflectance. This expression enables comparison of Si, GaAs, CdTe, and CIS cells under planar and Lambertian light distributions with varying rear reflectance in the Auger limit. A Lambertian light distribution is shown to be particularly beneficial to thinner material with higher rear reflectance due to absorptance enhancement. It is found that a Lambertian light distribution increases radiative recombination in most absorbers but can reduce radiative recombination in some CIS material.

Original languageEnglish (US)
Title of host publicationPhysics, Simulation, and Photonic Engineering of Photovoltaic Devices IX
EditorsAlexandre Freundlich, Masakazu Sugiyama, Stephane Collin
PublisherSPIE
ISBN (Electronic)9781510633131
DOIs
StatePublished - Jan 1 2020
EventPhysics, Simulation, and Photonic Engineering of Photovoltaic Devices IX 2020 - San Francisco, United States
Duration: Feb 4 2020Feb 6 2020

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
Volume11275
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X

Conference

ConferencePhysics, Simulation, and Photonic Engineering of Photovoltaic Devices IX 2020
CountryUnited States
CitySan Francisco
Period2/4/202/6/20

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Keywords

  • Absorptance
  • Emittance
  • Lambertian
  • Light trapping
  • Planar
  • Rear-mirror reflectance
  • Solar cells
  • Texturing

ASJC Scopus subject areas

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

Cite this

Irvin, N. P., Babcock, S. J., Chen, E. Y., King, R. R., & Honsberg, C. B. (2020). Benefits of Lambertian light distribution across widely deployed photovoltaic materials. In A. Freundlich, M. Sugiyama, & S. Collin (Eds.), Physics, Simulation, and Photonic Engineering of Photovoltaic Devices IX [112750U] (Proceedings of SPIE - The International Society for Optical Engineering; Vol. 11275). SPIE. https://doi.org/10.1117/12.2543935