Dye-Sensitized Solar Cells Using Carissa carandas Linn. Fruits Extract as Dye Sensitizer

摘要

Dye-sensitized solar cells (DSSCs) are a promising light harvesting material. The dye sensitizers using as solar energy absorber play a crucial on the conversion efficiency. There are two types of dye sensitizers; organic dyes and inorganic dyes. The organic dyes, derived from nature, have some advantages over the inorganic metal complex dyes as follow; (1) higher absorption coefficients; (2) wide range of absorption spectrum; (3) low-cost and environmentally friendly. In this study, the natural dyes extract from Carissa carandas Linn, fruits was used as sensitizers to fabricate dye-sensitized solar cells. The UV-visible adsorption characteristics of natural dye solution were shown to absorb in visible region at λ_(max) 537.92 nm. The light conversion efficiency (T)) of dye-sensitized solar cells reached 1.19 % with a short-circuit current density (I_(sc)) of 3.08 mA cm~(-2), an open circuit voltage (Voc) of 0.64 V and a fill factor (ff) of 0.56.