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Title: Non-Linear Luminescent Coupling in Series-Connected Multijunction Solar Cells

Abstract

The assumption of superposition or linearity of photocurrent with solar flux is widespread for calculations and measurements of solar cells. The well-known effect of luminescent coupling in multijunction solar cells has also been assumed to be linear with excess current. Here we show significant non-linearities in luminescent coupling in III-V multijunction solar cells and propose a simple model based on competition between radiative and nonradiative processes in the luminescent junction to explain these non-linearities. We demonstrate a technique for accurately measuring the junction photocurrents under a specified reference spectrum, that accounts for and quantifies luminescent coupling effects.

Authors:
;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Energy Efficiency and Renewable Energy (EERE), Solar Energy Technologies Office (EE-4S)
OSTI Identifier:
1045731
Report Number(s):
NREL/JA-5200-54916
Journal ID: ISSN 0003-6951; APPLAB; TRN: US201215%%114
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Journal Article
Journal Name:
Applied Physics Letters
Additional Journal Information:
Journal Volume: 100; Journal Issue: 25; Related Information: Article No. 251106; Journal ID: ISSN 0003-6951
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 71 CLASSICAL AND QUANTUM MECHANICS, GENERAL PHYSICS; PHOTOCONDUCTIVITY; PHOTOCURRENTS; PHOTOEMISSION; PHOTOLUMINESCENCE; SOLAR CELLS; SOLAR FLUX; solar energy, solar cells; luminescent coupling

Citation Formats

Steiner, Myles A., and Geisz, John F. Non-Linear Luminescent Coupling in Series-Connected Multijunction Solar Cells. United States: N. p., 2012. Web. doi:10.1063/1.4729827.
Steiner, Myles A., & Geisz, John F. Non-Linear Luminescent Coupling in Series-Connected Multijunction Solar Cells. United States. doi:10.1063/1.4729827.
Steiner, Myles A., and Geisz, John F. Mon . "Non-Linear Luminescent Coupling in Series-Connected Multijunction Solar Cells". United States. doi:10.1063/1.4729827.
@article{osti_1045731,
title = {Non-Linear Luminescent Coupling in Series-Connected Multijunction Solar Cells},
author = {Steiner, Myles A. and Geisz, John F.},
abstractNote = {The assumption of superposition or linearity of photocurrent with solar flux is widespread for calculations and measurements of solar cells. The well-known effect of luminescent coupling in multijunction solar cells has also been assumed to be linear with excess current. Here we show significant non-linearities in luminescent coupling in III-V multijunction solar cells and propose a simple model based on competition between radiative and nonradiative processes in the luminescent junction to explain these non-linearities. We demonstrate a technique for accurately measuring the junction photocurrents under a specified reference spectrum, that accounts for and quantifies luminescent coupling effects.},
doi = {10.1063/1.4729827},
journal = {Applied Physics Letters},
issn = {0003-6951},
number = 25,
volume = 100,
place = {United States},
year = {2012},
month = {6}
}

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