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Title: Cross-Sectional Transport Imaging in a Multijunction Solar Cell

Abstract

Combining highly localized electron-beam excitation at a point with the spatial resolution capability of optical near-field imaging, we have imaged carrier transport in a cross-sectioned multijunction (GaInP/GaInAs/Ge) solar cell. We image energy transport associated with carrier diffusion throughout the full width of the middle (GaInAs) cell and luminescent coupling from point excitation in the top cell GaInP to the middle cell. Supporting cathodoluminescence and near-field photoluminescence measurements demonstrate excitation-dependent Fermi level splitting effects that influence cross-sectioned spectroscopy results as well as transport limitations on the spatial resolution of cross-sectional measurements.

Authors:
; ; ; ; ;
Publication Date:
Research Org.:
National Renewable Energy Lab. (NREL), Golden, CO (United States)
Sponsoring Org.:
USDOE Office of Science (SC)
OSTI Identifier:
1245539
Report Number(s):
NREL/CP-5K00-63566
DOE Contract Number:  
AC36-08GO28308
Resource Type:
Conference
Resource Relation:
Conference: Presented at the 2015 IEEE 42nd Photovoltaic Specialist Conference (PVSC), 14-19 June 2015, New Orleans, Louisiana; Related Information: Proceedings of the 2015 IEEE 42nd Photovoltaic Specialist Conference (PVSC), 14-19 June 2015, New Orleans, Louisiana
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; cathodoluminescence; diffusion; luminescent coupling; multijunction solar cell; transport imaging

Citation Formats

Haegel, Nancy M., Ke, Chi-Wen, Taha, Hesham, Guthrey, Harvey, Fetzer, C. M., and King, Richard. Cross-Sectional Transport Imaging in a Multijunction Solar Cell. United States: N. p., 2015. Web. doi:10.1109/PVSC.2015.7356200.
Haegel, Nancy M., Ke, Chi-Wen, Taha, Hesham, Guthrey, Harvey, Fetzer, C. M., & King, Richard. Cross-Sectional Transport Imaging in a Multijunction Solar Cell. United States. doi:10.1109/PVSC.2015.7356200.
Haegel, Nancy M., Ke, Chi-Wen, Taha, Hesham, Guthrey, Harvey, Fetzer, C. M., and King, Richard. Sun . "Cross-Sectional Transport Imaging in a Multijunction Solar Cell". United States. doi:10.1109/PVSC.2015.7356200.
@article{osti_1245539,
title = {Cross-Sectional Transport Imaging in a Multijunction Solar Cell},
author = {Haegel, Nancy M. and Ke, Chi-Wen and Taha, Hesham and Guthrey, Harvey and Fetzer, C. M. and King, Richard},
abstractNote = {Combining highly localized electron-beam excitation at a point with the spatial resolution capability of optical near-field imaging, we have imaged carrier transport in a cross-sectioned multijunction (GaInP/GaInAs/Ge) solar cell. We image energy transport associated with carrier diffusion throughout the full width of the middle (GaInAs) cell and luminescent coupling from point excitation in the top cell GaInP to the middle cell. Supporting cathodoluminescence and near-field photoluminescence measurements demonstrate excitation-dependent Fermi level splitting effects that influence cross-sectioned spectroscopy results as well as transport limitations on the spatial resolution of cross-sectional measurements.},
doi = {10.1109/PVSC.2015.7356200},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Sun Jun 14 00:00:00 EDT 2015},
month = {Sun Jun 14 00:00:00 EDT 2015}
}

Conference:
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