Efficiency Enhancement of Cu（In,Ga）Se2 Solar Cells by Applying SiO2-PEG/PVP Antire flection Coatings
来源期刊：JOURNAL OF MATERIALS SCIENCE TECHNOLOG2015年第2期
论文作者：Dezeng Li Zhanqiang Liu Yaoming Wang Yongkui Shan Fuqiang Huang
文章页码：229 - 234
摘 要：An effective approach was presented to enhance photoelectric conversion efficiency of Cu（In,Ga）Se2 （CIGS） solar cells by using modified SiO2 antireflection coatings（ARCs） to harvest more incident sunlight.Polyethylene glycol（PEG） and polyvinyl pyrrolidone（PVP） used as additives were introduced into silica sols to prepare SiO2-PEG and SiO2-PVP coatings in the sol-gel dip-coating process,respectively. The different effects of PEG and PVP additives on SiO2 coatings were analyzed and the antireflection performance of SiO2-PEG and SiO2-PVP coatings was investigated. The transmittance over 97% ranging from 450 nm to 700 nm with a maximum transmittance over 99.40% at about 550 nm was achieved for both SiO2-PEG2000A and SiO2-PVP0.5 coatings. The relative efficiencies of CIGS solar cells coated with SiO2-PEG2000A and SiO2-PVP0.5 ARCs were increased by 7.27% and 8.33%,respectively. The modified SiO2 ARCs possessed the advantages of the low manufacturing cost,good adhesion,superior antireflective performance and the feasible method for large area fabrication.
Dezeng Li1，Zhanqiang Liu2，Yaoming Wang2，Yongkui Shan1，Fuqiang Huang2,3
1. Department of Chemistry,East China Normal University2. CAS Key Laboratory of Materials for Energy Conversion,Shanghai Institute of Ceramics,Chinese Academy of Sciences3. National Laboratory of Molecular Science and State Key Laboratory of Rare Earth Materials Chemistry and Applications,College of Chemistry and Molecular Engineering,Peking University
摘 要：An effective approach was presented to enhance photoelectric conversion efficiency of Cu（In,Ga）Se2 （CIGS） solar cells by using modified SiO2 antireflection coatings（ARCs） to harvest more incident sunlight.Polyethylene glycol（PEG） and polyvinyl pyrrolidone（PVP） used as additives were introduced into silica sols to prepare SiO2-PEG and SiO2-PVP coatings in the sol-gel dip-coating process,respectively. The different effects of PEG and PVP additives on SiO2 coatings were analyzed and the antireflection performance of SiO2-PEG and SiO2-PVP coatings was investigated. The transmittance over 97% ranging from 450 nm to 700 nm with a maximum transmittance over 99.40% at about 550 nm was achieved for both SiO2-PEG2000A and SiO2-PVP0.5 coatings. The relative efficiencies of CIGS solar cells coated with SiO2-PEG2000A and SiO2-PVP0.5 ARCs were increased by 7.27% and 8.33%,respectively. The modified SiO2 ARCs possessed the advantages of the low manufacturing cost,good adhesion,superior antireflective performance and the feasible method for large area fabrication.
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