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Title: Printed assemblies of microscale triple‐junction inverted metamorphic GaInP/GaAs/InGaAs solar cells

Abstract

Inverted metamorphic (IMM) multijunction solar cells represent a promising material platform for ultrahigh efficiency photovoltaic systems (UHPVs) with a clear pathway to beyond 50% efficiency. The conventional device processing of IMM solar cells, however, typically involves wafer bonding of a centimeter-scale die and destructive substrate removal, thereby imposing severe restrictions in achievable cell size, type of module substrate, spatial layout, as well as cost effectiveness. Here, we report material design and fabrication strategies for microscale triple-junction IMM (3J IMM) Ga 0.51In 0.49P/GaAs/In 0.26Ga 0.74As solar cells that can overcome these difficulties. Specialized schemes of delineation and undercut etching enable the defect-free release of microscale IMM solar cells and printed assemblies on a glass substrate in a manner that preserves the growth substrate, where efficiencies of 27.3% and 33.9% are demonstrated at simulated AM1.5D one- and 351 sun illumination, respectively. A composite carrier substrate where released IMM microcells are formed in fully functional, print-ready configurations allows high-throughput transfer printing of individual IMM microcells in a programmable spatial layout on versatile choices of module substrate, all desired for CPV applications.

Authors:
 [1];  [2]; ORCiD logo [2];  [1];  [1]
  1. Univ. of Southern California, Los Angeles, CA (United States)
  2. National Renewable Energy Lab. (NREL), Golden, CO (United States)
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), SuNLaMP Program; USDOE
OSTI Identifier:
1506617
Alternate Identifier(s):
OSTI ID: 1503367
Report Number(s):
NREL/JA-5900-73158
Journal ID: ISSN 1062-7995
Grant/Contract Number:  
AC36-08GO28308; 30293; DE‐AC36‐08GO28308
Resource Type:
Journal Article: Accepted Manuscript
Journal Name:
Progress in Photovoltaics
Additional Journal Information:
Journal Name: Progress in Photovoltaics; Journal ID: ISSN 1062-7995
Publisher:
Wiley
Country of Publication:
United States
Language:
English
Subject:
14 SOLAR ENERGY; 36 MATERIALS SCIENCE; III-V; inverted metamorphic microcells; multijunction solar cells; transfer printing

Citation Formats

Gai, Boju, Geisz, John F, Friedman, Daniel J, Chen, Huandong, and Yoon, Jongseung. Printed assemblies of microscale triple‐junction inverted metamorphic GaInP/GaAs/InGaAs solar cells. United States: N. p., 2019. Web. doi:10.1002/pip.3127.
Gai, Boju, Geisz, John F, Friedman, Daniel J, Chen, Huandong, & Yoon, Jongseung. Printed assemblies of microscale triple‐junction inverted metamorphic GaInP/GaAs/InGaAs solar cells. United States. doi:10.1002/pip.3127.
Gai, Boju, Geisz, John F, Friedman, Daniel J, Chen, Huandong, and Yoon, Jongseung. Mon . "Printed assemblies of microscale triple‐junction inverted metamorphic GaInP/GaAs/InGaAs solar cells". United States. doi:10.1002/pip.3127.
@article{osti_1506617,
title = {Printed assemblies of microscale triple‐junction inverted metamorphic GaInP/GaAs/InGaAs solar cells},
author = {Gai, Boju and Geisz, John F and Friedman, Daniel J and Chen, Huandong and Yoon, Jongseung},
abstractNote = {Inverted metamorphic (IMM) multijunction solar cells represent a promising material platform for ultrahigh efficiency photovoltaic systems (UHPVs) with a clear pathway to beyond 50% efficiency. The conventional device processing of IMM solar cells, however, typically involves wafer bonding of a centimeter-scale die and destructive substrate removal, thereby imposing severe restrictions in achievable cell size, type of module substrate, spatial layout, as well as cost effectiveness. Here, we report material design and fabrication strategies for microscale triple-junction IMM (3J IMM) Ga0.51In0.49P/GaAs/In0.26Ga0.74As solar cells that can overcome these difficulties. Specialized schemes of delineation and undercut etching enable the defect-free release of microscale IMM solar cells and printed assemblies on a glass substrate in a manner that preserves the growth substrate, where efficiencies of 27.3% and 33.9% are demonstrated at simulated AM1.5D one- and 351 sun illumination, respectively. A composite carrier substrate where released IMM microcells are formed in fully functional, print-ready configurations allows high-throughput transfer printing of individual IMM microcells in a programmable spatial layout on versatile choices of module substrate, all desired for CPV applications.},
doi = {10.1002/pip.3127},
journal = {Progress in Photovoltaics},
issn = {1062-7995},
number = ,
volume = ,
place = {United States},
year = {2019},
month = {3}
}

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Works referenced in this record:

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