Study on combination of natural red and green dyes to improve the power conversion efficiency of dye sensitized solar cells

被引:40
作者
Bashar, H. [2 ,4 ]
Bhuiyan, M. M. H. [2 ]
Hossain, M. R. [1 ,4 ]
Kabir, F. [1 ,4 ]
Rahaman, M. S. [2 ]
Manir, M. S. [1 ]
Ikegami, T. [3 ]
机构
[1] Bangladesh Atom Energy Commiss, Inst Radiat & Polymer Technol, GPO Box 3787, Dhaka 1000, Bangladesh
[2] Bangladesh Atom Energy Commiss, Inst Nucl Sci & Technol, GPO Box 3787, Dhaka 1000, Bangladesh
[3] Kumamoto Univ, Dept Elect & Elect Engn & Comp Sci, Kumamoto 8608555, Japan
[4] Univ Dhaka, Inst Energy, Dhaka 1000, Bangladesh
来源
OPTIK | 2019年 / 185卷
关键词
DSSC; Natural red dye; Natural green dye; Combination of dyes; PIGMENTS; STABILITY;
D O I
10.1016/j.ijleo.2019.03.043
中图分类号
O43 [光学];
学科分类号
070207 ; 0803 ;
摘要
In this paper, natural red dye extracted from beetroot (Beta vulgaris) and green dye extracted from spinach (Spinacia oleracea) was used as a sensitizer source for natural dye-based dye-sensitized solar cells (DSSC). DSSC, sensitized with natural red and green dyes yields low cell performance, i.e, for red dye efficiency obtained was, eta = 0.56% and for green dye, eta = 0.49%. Here to improve the cell performance, these two dyes (red and green) were combined at different volume ratios in order to get the maximum cell efficiency and the optimum dye combination ratio. From the UV absorption spectrum, the combination of dyes showed a wide absorption spectra and higher absorbance in the visible solar spectrum than both the single individual red or green dye. By the optimized combination of dyes (80% red + 20% green) co-sensitized DSSC, the observed cell parameters were, Isc = 4.65 mA, Voc = 386.7mA and FF = 0.55. DSSC co-sensitized with the optimum combination of red and green dyes, the maximum cell efficiency obtained was 0.99%, which is almost 2 and 1.77 times higher than that of the single individual red and green dyes.
引用
收藏
页码:620 / 625
页数:6
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