InGaP//GaAs//CIGS 3-junction spectrum-splitting solar cells with low-concentration ratio
- Authors
- Kang, Dong-Won; Takiguchi, Yuki; Sichanugrist, Porponth; Konagai, Makoto
- Issue Date
- Jun-2016
- Publisher
- WILEY-V C H VERLAG GMBH
- Keywords
- CIGS; efficiency; GaAs; InGaP; junction; solar cells; spectrum splitting
- Citation
- PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE, v.213, no.6, pp 1535 - 1540
- Pages
- 6
- Journal Title
- PHYSICA STATUS SOLIDI A-APPLICATIONS AND MATERIALS SCIENCE
- Volume
- 213
- Number
- 6
- Start Page
- 1535
- End Page
- 1540
- URI
- https://scholarworks.bwise.kr/cau/handle/2019.sw.cau/74932
- DOI
- 10.1002/pssa.201532811
- ISSN
- 1862-6300
1862-6319
- Abstract
- In order to achieve high efficiency of solar cells, solar spectrum-splitting technique was suggested. On the basis of a previous work of a-Si:H//CIGS splitting solar cells with 22% efficiency, we tried to demonstrate InGaP//CIGS 4-terminal spectrum-splitting structure to reinforce top cell performance instead of using the a-Si:H. After the spectrum-splitting at 620 nm, the InGaP//CIGS 4-terminal cells exhibited an efficiency of 27.4%. With an extension up to a 3-junction by employing a GaAs solar cells as a middle cell, InGaP//GaAs//CIGS spectrum-splitting solar cells were realized and measured by a new current-voltage measurement system using two optical splitters of which splitting wavelengths correspond to 645 and 875 nm. By applying those configurations, the InGaP//GaAs//CIGS solar cells showed 28.9% efficiency after the splitting, and the final efficiency higher than 31.0% was also demonstrated under relatively low-concentration ratio about 10 suns. These results indicate that our spectrum-splitting approach can open promising opportunities to achieve the high efficiency (>30%) with an additional merit of flexible employment of each solar cell without process limitation. (C) 2016 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
- Files in This Item
- There are no files associated with this item.
- Appears in
Collections - College of Engineering > School of Energy System Engineering > 1. Journal Articles
Items in ScholarWorks are protected by copyright, with all rights reserved, unless otherwise indicated.