Pengaruh Pelarut Metanol Dan Pelarut Metanol-asam Asetat-air Terhadap Efisiensi Dye Sensitized Solar Cell Dari Ekstrak Bunga Rosela (Hibiscus Sabdariffa)

Prestysiana Ariane Dewi • Gunawan Gunawan • Abdul Haris

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(Bahasa Indonesia, 8 pages)


---Research on The influence of methanol and methanol-acetic acid-water solvents onefficiency of Dye Sensitized Solar Cell using rosella flower (Hibiscus sabdariffa) as sensitizer has been done.Construction of solar cell used was a sandwich system. Counter electrode was placed in the top layer of TiO2with gel-based solid polymer electrolyte PEG lied between these two electrodes. Solar cell characterizationhas been evaluated with UV-Vis spectrometer in rosella flower, Scanning Electron Microscopy (SEM), X-raydiffraction, and the measurement of current-voltage solar cell. The maximum wavelength of rosella flower'sextracts by maceration with methanol was at 508,5 nm while for the rosella's extract by maceration withsolvent mixture of methanol-acetic acid-water was at 524,5 nm. Surface morphology of TiO2 at 10000xmagnification shows the surface of TiO2 cavities with the size range of 69,56-347,82 nm, and cross sectionshowing the thickness of 39,05 μm. In the thin layer of TiO2 diffractogram shows high intensity diffractionpattern with main peaks at 2 of 29,57 with a plane spacing (d) of 3,5074 Å. Efficiency for solar cell usingdye with methanol more bigger are 4,65.10-4 % than solar cell using dye with methanol-acetic acid-water are3,58.10-4 %.




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