Polymer Thin Films for Anti-Reflection and Passivation on the Front Surface of Interdigitated Back Contact c-Si Solar Cell

被引：15
作者：
Chen, Jianhui [1 ]
Shen, Yanjiao [1 ]
Chen, Bingbing [1 ]
Ge, Kunpeng [1 ]
Guo, Jianxin [1 ]
Wang, Ziqian [3 ]
Li, Feng [3 ]
Xu, Ying [1 ]
Mai, Yaohua [1 ,2 ]
机构：
[1] Hebei Univ, Coll Phys Sci & Technol, Inst Photovolta, Baoding 071002, Peoples R China
[2] Jinan Univ, Inst New Energy Technol, Coll Informat & Technol, Guangzhou 510632, Guangdong, Peoples R China
[3] Yingli Green Energy Holding Co Ltd, State Key Lab Photovolta Mat & Technol, Baoding 071051, Peoples R China
来源：
SOLAR RRL | 2017年 / 1卷 / 07期
关键词：
anti-reflection; IBC solar cells; passivation; polymer; PSS; LAYER;
D O I：
10.1002/solr.201700079
中图分类号：
TE [石油、天然气工业]; TK [能源与动力工程];
学科分类号：
0807 ; 0820 ;
摘要：
In this work, a polymer thin film, polystyrenesulfonate (PSS), is employed in interdigitated back contact (IBC) solar cells as an anti-reflection (AR) coating and front surface passivation (SP) layer. It is found that PSS thin film is highly transparent and possesses a refraction index of about 1.5, and thus functions well as AR coating for Si wafer-based solar cells. An effective minority carrier lifetime of 2.3 ms is obtained on 1-5V Omega . cm n-type crystalline Si wafer with both sides symmetrically coated by PSS thin film, proving a good Si surface passivation by this polymer. An increase in power conversion efficiency is obtained when 150 nm-thick PSS thin film is coated on the front surface of IBC solar cells without any AR/SP layers, resulted from the increased short circuit current density and open circuit voltage. This work opens up a new approach using organic polymer thin film deposited with low temperature and vacuum-free technique as AR/SP multifunctional layer in Si solar cells.
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页数：4
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