Characterizations of Cu/Sn-Zn Solder/Ag Interfaces on Photovoltaic Ribbon for Silicon Solar Cells

被引：10

作者：

Chen, Kuan-Jen ^{[1
]}

Hung, Fei-Yi ^{[2
]}

Lui, Truan-Sheng ^{[2
]}

Chen, Li-Hui ^{[2
]}

Chen, Yu-Wen ^{[2
]}

机构：

[1] Natl Cheng Kung Univ, Instrument Ctr, Tainan 70101, Taiwan

[2] Natl Cheng Kung Univ, Dept Mat Sci & Engn, Tainan 701, Taiwan

来源：

IEEE JOURNAL OF PHOTOVOLTAICS | 2015年 / 5卷 / 01期

关键词：

Bonding strength; intermetallic compounds (IMCs); internal stress; photovoltaic (PV) ribbon; Sn-xZn solder; CONTACTS; EMITTERS; SILVER;

D O I：

10.1109/JPHOTOV.2014.2373822

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：

Sn-xZn (x = 9, 25, and 50 wt%) alloy solders are applied in photovoltaic (PV) ribbon and connected with silicon solar cells. The interfacial microstructures, series resistance, and bonding strength of Sn-xZn PV modules are investigated. Cu5Zn8 and AgZn3 intermetallic compounds (IMCs) were found at the interfaces. The Zn content in the solder dominates the growth behavior of IMCs at the interface. The thickness of the Cu5Zn8 and AgZn3 IMC layer increased with increasing Zn content in the solder, and thus, the series resistance of the PV module also increased. The growth of IMCs can enhance the interfacial adhesion strength, but excess Zn overconsumes the Ag electrode, reducing the bond strength of the PV module. Applying low-Zn-content Sn-xZn solder to PV ribbon avoids overconsumption of the Ag layer and, thus, decreases the series resistance and internal stress.

引用

页码：202 / 211

页数：10

共 20 条

[1] Laser isolation of shunted regions in industrial solar cells
Abbott, M. D.
Trupke, T.
Hartmann, H. P.
Gupta, R.
Breitenstein, O.
[J]. PROGRESS IN PHOTOVOLTAICS, 2007, 15 (07): : 613 - 620
[2] Al-Rifai MH, 2002, SOL ENERG MAT SOL C, V72, P327, DOI 10.1016/S0927-0248(01)00180-5
[3] Augarten Y., 2007, P 22 EUR PHOT SOL EN, P1220
[4] Silver thick-film contacts on highly doped n-type silicon emitters:: Structural and electronic properties of the interface
Ballif, C
Huljic, DM
Willeke, G
Hessler-Wyser, A
[J]. APPLIED PHYSICS LETTERS, 2003, 82 (12) : 1878 - 1880
[5] Fertig Fabian, 2011, Proceedings of the 26th European International Conference on Photovoltaic Solar Energy, P1168
[6] Gosalvez M., 2010, HDB SILICON BASED ME, P398
[7] Solar cell Edge shunt isolation: A simplified approach
Hamammu, IM
Ibrahim, K
[J]. 2002 IEEE INTERNATIONAL CONFERENCE ON SEMICONDUCTOR ELECTRONICS, PROCEEDINGS, 2002, : 230 - 232
[8] Understanding the formation and temperature dependence of thick-film Ag contacts on high-sheet-resistance Si emitters for solar cells
Hilali, MM
Al Jassim, MM
To, B
Moutinho, H
Rohatgi, A
Asher, S
[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2005, 152 (10) : G742 - G749
[9] Alkaline etching for reflectance reduction in multicrystalline silicon solar cells
Hylton, JD
Burgers, AR
Sinke, WC
[J]. JOURNAL OF THE ELECTROCHEMICAL SOCIETY, 2004, 151 (06) : G408 - G427
[10] Johnsen L., 2012, J THERMAL SCI ENG AP, V4

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