NDLI: Jaxa's strategy for development of high-performance space photovoltaics

Content Provider	IEEE Xplore Digital Library
Author	Imaizumi, M. Takahashi, M. Takamoto, T.
Copyright Year	2010
Description	Author affiliation: SHARP Corporation, 492 Minosho-cho, Yamatokoriyama, Nara 639-1186, Japan (Takamoto, T.) \|\| Japan Aerospace Exploration Agency, 2-1-1 Sengen, Tsukuba, Ibaraki 305-8505, Japan (Imaizumi, M.; Takahashi, M.)
Abstract	JAXA's approach to realizing a high specific power solar paddle by utilizing thin-film III–V multi-junction solar cells is introduced. Thin-film cells laminated with thin and transparent sustaining materials have been named “Space Solar Sheet (SSS).” Development of a first-generation SSS (SSS-1) was completed in the beginning of 2010. Thin-film InGaP/GaAs dual-junction (TF2J) cells are used as solar cells in SSS-1. The AM0 efficiency of TF2J cells is ∼25%. Two types of lamination structure for the active side are employed: one uses transparent resin films with UV coating, and the other is a conventional configuration using a thin coverglass. Qualification tests have confirmed their life at more than 5 years in the LEO environment (the resin film type) and 10 years in the GEO environment (the thin coverglass type). Second-generation SSS (SSS-2) development has started this year (2010). The major improvement from SSS-1 to SSS-2 will be cell efficiency, achieved by adopting an inverted metamorphic triple-junction (IMM-3J) structure cell. The target efficiency is 32% at BOL under AM0, 1sun. A cost reduction study involving GaAs substrate recycling will also be carried out in this development. As well, the lamination technology will be modified to improve specific power from 0.5 W/g to 0.7 W/g. The achievement of such a SSS will enable us to realize lightweight solar paddles with specific power of 150 W/kg or greater.
Starting Page	000128
Ending Page	000131
File Size	884335
Page Count	4
File Format	PDF
ISBN	9781424458905
ISSN	01608371
e-ISBN	9781424458929
DOI	10.1109/PVSC.2010.5614537
Language	English
Publisher	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Publisher Date	2010-06-20
Publisher Place	USA
Access Restriction	Subscribed
Rights Holder	Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subject Keyword	Gallium arsenide Humidity
Content Type	Text
Resource Type	Article
Subject	Industrial and Manufacturing Engineering Control and Systems Engineering Electrical and Electronic Engineering

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1	Ministry of Education (GoI), Department of Higher Education	Sanctioning Authority	https://www.education.gov.in/ict-initiatives
2	Indian Institute of Technology Kharagpur	Host Institute of the Project: The host institute of the project is responsible for providing infrastructure support and hosting the project	https://www.iitkgp.ac.in
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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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Very high efficiency InGaP/GaAs dual-junction solar cell manufacturing at Emcore Photovoltaics

Paths to high efficiency low-cost photovoltaics

Expectations on the very high concentration photovoltaics performance

Development status of “Space Solar Sheet”

Single crystalline gallium arsenide photovoltaics on flexible metal substrates

High efficiency InGaP/InGaAs tandem solar cells on Ge substrates

The future of space photovoltaics

Rigid type solar array panels [for space power]

Cost performance of multi-junction, gallium arsenide, and silicon solar cells on spacecraft

Jaxa's strategy for development of high-performance space photovoltaics

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