S. Pouladi, M. Rathi, P. Dutta, S. Oh, D. Khatiwada, Yao Yao, Ying Gao, Sicong Sun, Yongkuan Li, M. Asadirad, Shahab Shervin, Jie Chen, V. Selvamanickam, J. Ryou
{"title":"Toward Higher Efficiency of Low-Cost Flexible Single-Crystal-Like GaAs Thin Film Solar Cells on Metal Tapes","authors":"S. Pouladi, M. Rathi, P. Dutta, S. Oh, D. Khatiwada, Yao Yao, Ying Gao, Sicong Sun, Yongkuan Li, M. Asadirad, Shahab Shervin, Jie Chen, V. Selvamanickam, J. Ryou","doi":"10.1109/PVSC.2018.8548010","DOIUrl":null,"url":null,"abstract":"III-V compound semiconductors are the best photovoltaic solar cell (SC) materials for highest conversion efficiencies. However, they are expensive and lack in mechanical flexibility and manufacturing scalability. We developed a new PV platform where nearly single-crystalline III-V thin films were directly deposited on inexpensive polycrystalline metal tapes. While a promising efficiency of ~7.5% was achieved for flexible single junction SCs on this platform, the open circuit voltage of SC suffers from minority carrier recombination at grainboundary sites according to a simulation study. A bulk passivation treatment is conducted on the SC devices which resulted in more than 350mV increase for Voc.","PeriodicalId":6558,"journal":{"name":"2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) (A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC)","volume":"27 1","pages":"0237-0239"},"PeriodicalIF":0.0000,"publicationDate":"2018-06-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"2018 IEEE 7th World Conference on Photovoltaic Energy Conversion (WCPEC) (A Joint Conference of 45th IEEE PVSC, 28th PVSEC & 34th EU PVSEC)","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1109/PVSC.2018.8548010","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
III-V compound semiconductors are the best photovoltaic solar cell (SC) materials for highest conversion efficiencies. However, they are expensive and lack in mechanical flexibility and manufacturing scalability. We developed a new PV platform where nearly single-crystalline III-V thin films were directly deposited on inexpensive polycrystalline metal tapes. While a promising efficiency of ~7.5% was achieved for flexible single junction SCs on this platform, the open circuit voltage of SC suffers from minority carrier recombination at grainboundary sites according to a simulation study. A bulk passivation treatment is conducted on the SC devices which resulted in more than 350mV increase for Voc.