2026-05-30T20:58:10Z https://meral.edu.mm/oai

oai:meral.edu.mm:recid/5571 2021-12-13T07:08:34Z 1582963739756 1582963739756:1582967025340 user-um

Optical Properties of Natural Dye from Strawberry Fruits as Photosensitizer for Dye-Sensitized Solar Cells Application Nan Kyi Kyi Thein Aung Htet Thwe Thwe Aye Natural dye extracted from Strawberry fruits was used as dye sensitizer in this study. Extraction of natural dye was done using different solvents as ethanol, acetone and isopropanol. Optical properties of natural dye were studied by UV-vis spectroscopic measurement. Characterization results showed high absorbance values 0.3764, 0.2251 and 0.42 at 615 nm, 510 nm and 525 nm for ethanol, acetone and isopropanol. The optimum energy band gap values in this study were 2 eV, 2.42 eV and 2.35 eV at 615 nm, 510 nm and 525 nm for ethanol, acetone and isopropanol solvents at room temperature (25 oC). The optimum values of absorption coefficient of Strawberry dye with ethanol, acetone and isopropanol solvents were 1.76 km-1, 2.12 km-1 and 2.06 km-1 at room temperature (25 oC). In this study, two methods were used to calculate the band gap energy values and they were nearly equal. 2020-05-01 http://hdl.handle.net/20.500.12678/0000005571 https://meral.edu.mm/records/5571