Dye sensitized solar cell using natural dyes extracted from red leave onion

International Journal of Physical Sciences

Kelvin Alaba Aduloju¹ 

关键词: Allium cepa;    band-gap;    photoelectrochemical solar cell;    natural dye;    semiconductor.;   

DOI  :  10.5897/IJPS11.1609

学科分类：物理（综合）

来源: Academic Journals

【 摘 要 】

Extracts from red leave onion (Allium cepa) were used as natural sensitizers of a wide band-gap semiconductor (TiO2) in photoelectrochemical solar cells. The natural dye, adsorbed onto the semiconductor surface, absorbs visible light and promotes electron transfer across the dye/semiconductor interface. Photogenerated current density and voltage as high as 0.85 mAm-2and 0.65 mV, respectively were obtained and effective energy conversion efficiency of 0.29% was achieved. These simple and cheap techniques of cell preparation therefore open up a perspective of commercial feasibility for inexpensive and environmentally friendly dye cells.

【 授权许可】

CC BY