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Title: The Influence of Spectral Albedo on Bifacial Solar Cells: A Theoretical and Experimental Study

Abstract

We have investigated the influence of the spectral albedo on the power output of bifacial solar cells. We adapted the Shockley–Queisser radiative flux balance framework to account for a variation of the spectrum and intensity of the incoming light. We find that the ideal band gap and the maximum efficiency depend on the spectral albedo of the surroundings and that optimal cell performance cannot be assessed when only accounting for a spectrally independent albedo.With a spectral albedo model, we predict that the power output for a bifacial silicon solar cell surrounded by green grass is 3.1% higher than for a wavelength-independent albedo, and even 5.2% higher for white sand. We experimentally verify this trend for silicon heterojunction solar cells and we derive the ideal spectral albedo.

Authors:
 [1]; ORCiD logo [1];  [2];  [2];  [1]
  1. California Inst. of Technology (CalTech), Pasadena, CA (United States)
  2. Arizona State Univ., Tempe, AZ (United States)
Publication Date:
Research Org.:
Stanford Univ., CA (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE); National Science Foundation (NSF)
OSTI Identifier:
1579871
Grant/Contract Number:  
EE0004946
Resource Type:
Accepted Manuscript
Journal Name:
IEEE Journal of Photovoltaics
Additional Journal Information:
Journal Volume: 7; Journal Issue: 6; Journal ID: ISSN 2156-3381
Publisher:
IEEE
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; Bifacial solar cells; Shockley–Queisser limit; spectral albedo; thermodynamic efficiency limit

Citation Formats

Russell, Thomas C. R., Saive, Rebecca, Augusto, Andre, Bowden, Stuart G., and Atwater, Harry A. The Influence of Spectral Albedo on Bifacial Solar Cells: A Theoretical and Experimental Study. United States: N. p., 2017. Web. doi:10.1109/JPHOTOV.2017.2756068.
Russell, Thomas C. R., Saive, Rebecca, Augusto, Andre, Bowden, Stuart G., & Atwater, Harry A. The Influence of Spectral Albedo on Bifacial Solar Cells: A Theoretical and Experimental Study. United States. doi:10.1109/JPHOTOV.2017.2756068.
Russell, Thomas C. R., Saive, Rebecca, Augusto, Andre, Bowden, Stuart G., and Atwater, Harry A. Mon . "The Influence of Spectral Albedo on Bifacial Solar Cells: A Theoretical and Experimental Study". United States. doi:10.1109/JPHOTOV.2017.2756068. https://www.osti.gov/servlets/purl/1579871.
@article{osti_1579871,
title = {The Influence of Spectral Albedo on Bifacial Solar Cells: A Theoretical and Experimental Study},
author = {Russell, Thomas C. R. and Saive, Rebecca and Augusto, Andre and Bowden, Stuart G. and Atwater, Harry A.},
abstractNote = {We have investigated the influence of the spectral albedo on the power output of bifacial solar cells. We adapted the Shockley–Queisser radiative flux balance framework to account for a variation of the spectrum and intensity of the incoming light. We find that the ideal band gap and the maximum efficiency depend on the spectral albedo of the surroundings and that optimal cell performance cannot be assessed when only accounting for a spectrally independent albedo.With a spectral albedo model, we predict that the power output for a bifacial silicon solar cell surrounded by green grass is 3.1% higher than for a wavelength-independent albedo, and even 5.2% higher for white sand. We experimentally verify this trend for silicon heterojunction solar cells and we derive the ideal spectral albedo.},
doi = {10.1109/JPHOTOV.2017.2756068},
journal = {IEEE Journal of Photovoltaics},
number = 6,
volume = 7,
place = {United States},
year = {2017},
month = {10}
}

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