Combining the principle analysis of the EL and PL of silicon solar cells, a new method using EL and PL images to analyze the Ag-Si contact resistance performance of the solar cells is proposed. Two groups of front-side silver pastes with different systems glass powder for n-type solar cells are prepared. The solar cells are fabricated after screen printing and sintering. The ohmic contact performance of the front-side silver electrode is analyzed via PL test, EL test and Ag-Si contact resistance test. It is found that the front-side silver paste of the Pb-B-Si systems glass powder has better electrode performance after sintering. The performance of the glass powder is analyzed via TGA-DSC, and it is found that the contact performance of the electrode formed by the electrode paste prepared from the glass powder with lower Tg （glass transition temperature） is better.
Key words
solar cells /
electroluminescence /
photoluminescence /
electrode /
contact resistance
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References
[1] SCHMIGA C, NAGEL H, SCHMIDT J, et a1. 19% efficient n-type Czochralski silicon solar cells with screen-printed aluminium-alloyed rear emitter[J]. Progress in photovoltaics research and applications, 2006, 14(6): 533-539.
[2] WÜRFEL P. Physics of solar cells: from principles to new concepts[M]. Weinheim: Wiley-VCH, 2005: 65-67.
[3] TRUPKE T, BARDOS R A, ABBOTT M D, et a1.Suns-photoluminescence:contactless determination of current-voltage characteristics of silicon wafers[J]. Applied physics letters, 2005, 87(9): 093503.
[4] 娄世殊. 晶硅太阳电池的受激发光成像检测方法研究[D]. 北京: 中国科学院大学, 2016.
LOU S S.Investigation of excited luminescence imaging testing methods for silicon solar cells[D]. Beijing: University of Chinese Academy of Sciences, 2016.
[5] 柳效辉, 徐林, 肖晨江, 等. 晶体硅太阳电池电致发光的研究[J]. 太阳能学报, 2011, 32(6): 822-824.
LIU X H, XU L, XIAO C J, et al.Study of the electrolunm-inescence characterization of crystalline silicon solar cells[J]. Acta energiae solaris sinica, 2011, 32(6): 822-824.
[6] TRUPKE T, BARDOS R A, ABBOTT M D.Self-consistent calibration of photoluminescence and photoconductance lifetime measurements[J]. Applied physics letters, 2005, 87(18): 184102.
[7] 周洪. 晶体硅太阳能电池EL测试仪及电池老化特性研究[D]. 武汉: 华中科技大学, 2018.
ZHOU H.Study on the EL tester and aging characteristics of crystalline silicon solar cells[D]. Wuhan: Huazhong University of Science & Technology, 2018.
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