Usna, Sri Rahayu Alfitri
Prodi Fisika FST UNJA

Published : 2 Documents

Found 2 Documents

PEMBUATAN SEL SURYA TERSENSITASI PEWARNA (SSTP) LAPISAN TiO2/GRAFIT DARI EKSTRAK KELOPAK BUNGA ROSELLA, BERAS KETAN HITAM, DAN UBI JALAR UNGU nurhidayah, nurhidayah; suwarni, suwarni; Usna, Sri Rahayu Alfitri; Afrianto, Muhammad Ficky; farid, faizar
JOURNAL ONLINE OF PHYSICS Vol 2 No 2 (2017): Jurnal Fisika Vol 2 No 2
Publisher : Prodi Fisika FST UNJA

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Fabrication of Dye-Sensitized Solar Cells (DSSC) using working electrodes composed of a mixture of TiO2 and 14% of graphite, which then denoted as TiO2:C14%, has been done. The TiO2:C14% colloid was deposited on a conductive Fluorine Doped Tin Oxide (FTO) glass substrate by using sol-gel-spin coating at the speed of 1500 rpm for 50 seconds. This thin layer was then immersed for 24 hours in different dye solutions extracted from Rosella petals (hibiscus sabdariffa), black glutinous rice (oryza sativa) and purple sweet potato (ipomoea batatas). Composition materials used to fabricate the solar cells were characterized by using x-ray diffraction (XRD) and scanning electron microscope (SEM). The power conversion efficiency (PCE) of the solar cells was measured by using a set of I-V characteristic circuit. The result showed that the highest PCE of 3 x 10-3 % was obtained from the cells based on dye extracted from rosella petals compared to those from black glutinous rice and purple sweet potato.   Keywords: DSSC, dye, rosella, TiO2, spin coating, XRD, efficiency.
PENGARUH KETEBALAN ELEKTRODA KERJA TiO2/GRAFIT TERHADAP EFISIENSI DYE SENSITIZED SOLAR CELLS (DSSC) Nurhidayah, Nurhidayah; Suwarni, Suwarni; Usna, Sri Rahayu Alfitri; Afrianto, Muhammad Ficky; Farid, Faizar
Komunikasi Fisika Indonesia Vol 16, No 1 (2019)
Publisher : Universitas Riau

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The production of Dye Sensitized Solar Cells (DSSC) has been done. The transparent electrode is made by mixing of TiO2 and graphite 14% (TiO2:C14%). TiO2:C14% colloid is deposited on a conductive glass substrate Fluorine Doped Tin Oxide (FTO) by spin coating method at 500, 1000 and 1500 rpm during 50 second. Then, the layer is soaked of 24 hours in dye taken from the extract of rosella. SEM and XRD characterization are performed for looking properties of DSSC materials. The efficiency of DSSC is calculated by using the characteristic circuit IV curve. The highest efficiency value is obtained when the thickest active layer (0,9 mm) at 500 rpm, the resulting efficiency is 0,014%.