Manufacturing solar cells based on nanocrystalic ZnO : master thesis

U radu su pripravljene DSSC solarne ćelije na bazi nanokristaličnog cink(II) oksida te je kroz četrnaest dana mjeren fotoinducirani napon pod umjetnim osvjetljenjem. Pasta nanokristaličnog ZnO pripremljena je na dva načina, jedan s kiselinom, a drugi s alkoholom te se na taj način promatrao utjecaj tih otapala na kvalitetu poroznog sloja. U obje paste dodan je neionski dispergent Triton-X 100, koji služi kao sredstvo za kvašenje te pomaže dobivanju kompaktnog poroznog sloja koji dobro prijanja za površinu. Stakalca s nanesenim tankim slojem nanokristaličnog ZnO termički su obrađena te proučavana digitalnim mikroskopom. Također, radi usporedbe aktivnosti sintetskih i prirodnih bojila, korišteno je N3 sintetsko bojlo i antocijanin koji je prirodni pigment ekstrahiran u etanolu iz suhog cvijeta hibiskusa. Izmjereni su UV-Vis sprektri korištenih bojila. Rezultati ispitivanja pokazuju da sve ćelije pripravljene i s kiselinom i s alkoholom, pokazuju više vrijednosti fotoinduciranog napona primjenom antocijana kao bojila.In this paper, DSSC solar cells based on nanocrystal zinc(II) oxide were manufactured and over the period of fourteen days, photoinduced voltage was mesured under the artificial light. Nanocrystal paste of ZnO was made in two ways, first using acid and second using alcohol which made it possible to see the effect of the used solution on the quality on the layer. Both pastes were made with the addition of nonionic dispersion of Triton-X 100 that is used as wetting agent and helps to get compact layer. Plates with nanocrystal layer of ZnO were analysed with digital microscope after thermic processing. For comparison of the dye activity two dyes were used, synthetic N3 and anthocyanin which is a natural pigment and was extracted into ethanol from dry hibiscus flower. UV-Vis spectra of the used dyes were determined. Results show that all cells made with alcohol and with acid show higher values of photoinduced voltage using anthocyanin as a dy