Stability optimization of TiO2 dye-sensitized solar sub-modules in Z-type series interconnection

P. N. Anggraini, L. Muliani, G. Wiranto, L. Retnaningsih, J. Hidayat
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Abstract

Dye sensitized solar cells (DSSC), one of the promising technology for renewable energy, has reached good performance in laboratory scale. In order to be implemented in practical use, it has become a necessity to enlarge the small size DSSC into large area (module) and to optimize stability of the module. In this study, dye sensitized solar sub-modules were fabricated with a size of 33 mm × 50 mm consisting of two active cells, each with a size of 10 mm × 50 mm, which are interconnected in type-z series. Working electrode of the sub-modules was prepared using a screen printing technique to deposit the TiO2 paste on glass conductive substrate with TiCl4 pre-treatment and post-treatment. The sub-modules were assembled using two types of sealant to investigate the effect of sealant on lifetime of the sub-module. I-V measurement using sun simulator with light intensity of 500 watt/m2 was applied twice in the range of six days to obtain the sub-module lifetime stability result. From the first I-V test, the highest photoconversion efficiency of the sub-module was 3.58%. In the second test results, the photoconversion efficiency was decreased significantly with the lowest percentage of efficiency degradation was 95.81%.
z型串联互连中TiO2染料敏化太阳能子组件稳定性优化
染料敏化太阳能电池(Dye sensitized solar cells, DSSC)是一种很有前途的可再生能源技术,在实验室规模上已经取得了良好的性能。为了在实际应用中实现,将小尺寸的DSSC扩大到大面积(模块)并优化模块的稳定性已成为必要。在这项研究中,染料敏化太阳能子模块的尺寸为33 mm × 50 mm,由两个活性电池组成,每个活性电池的尺寸为10 mm × 50 mm,它们以z型串联互连。采用丝网印刷技术制备子模块的工作电极,将TiO2浆料沉积在玻璃导电基板上,并进行TiCl4预处理和后处理。使用两种类型的密封剂对子模块进行组装,以研究密封剂对子模块寿命的影响。在6天的时间内,使用太阳模拟器进行两次光强500瓦/平方米的I-V测量,获得子模块寿命稳定性结果。从第一次I-V测试来看,子模块的最高光转换效率为3.58%。在第二次试验结果中,光能转换效率显著下降,最低效率下降率为95.81%。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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