Dye-sensitized solar cells using ZnO nanotips and Ga-doped ZnO films

摘要: Ga-doped ZnO (GZO) transparent conducting films and well-aligned nanotips were sequentially grown on a glass substrate using metal–organic chemical vapor deposition (MOCVD). The morphology control of from dense to was realized through temperature-modulated growth. nanotips/GZO structure sensitized with dye N719 form photoelectrochemical cells. It is found that the power conversion efficiency linearly increases length nanotips. For 1.0 cm2 dye-sensitized solar cell built 4.8 µm nanotips, peak incident photo-to-current 79% (at ~530 nm) 0.77% under illumination one sun-simulated sunlight achieved. UV light harvesting directly by observed. I–V characteristics cells analyzed one-diode equivalent circuit model.