Co-sensitization of Natural Dyes for Improved Efficiency in Dye-sensitized Solar Cell Application

被引：11

作者：

Kumar, K. Ashok ^{[1
]}

Subalakshmi, K. ^{[1
]}

Senthilselvan, J. ^{[1
]}

机构：

[1] Univ Madras, Dept Nucl Phys, Guindy Campus, Madras 600025, Tamil Nadu, India

来源：

DAE SOLID STATE PHYSICS SYMPOSIUM 2015 | 2016年 / 1731卷

关键词：

DSSC; Co-sensitization; Natural dyes; J-V;

D O I：

10.1063/1.4947823

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

In this paper, a new approach of co-sensitized DSSC based on natural dyes is investigated to explore the possible way to improve the power conversion efficiency. To realize this purpose 10 DSSC devices were fabricated using mono-sensitization and co-sensitization of ethanolic extracts of natural dye sensitizers obtained from Cactus fruit, Jambolana fruit, Curcumin and Bermuda grass. The optical absorption spectrum of the mono and hybrid dye extracts were studied by UV-Visible absorption spectrum. It shows the characteristic absorption peaks in visible region corresponds to the presence of natural pigments of anthocyanin, betacyanin and chlorophylls. Absorption spectrum of hybrid dyes reveals a wide absorption band in visible region with improved extinction co-efficient and it is favorable for increased light harvesting nature. The power conversion efficiency of DSSC devices were calculated using J-V curve and the maximum efficiency achieved in the present work is noted to be similar to 0.61% for Cactus-Bermuda co-sensitized DSSC.

引用

页数：3