@article{SisLab1255, volume = {30}, number = {1}, title = {Characterization of Organic Solar Cells Made from Hybrid Photoactive Materials of P3HT:PCBM/nc-TiO2}, author = {Nang Dinh Nguyen and Thi Thao Tran and Ngoc Chung Do}, year = {2014}, pages = {8--15}, journal = {VNU Journal of Mathematics-Physics}, url = {https://eprints.uet.vnu.edu.vn/eprints/id/eprint/1255/}, abstract = {Nanorod-like TiO2 was grown on Ti wafers by annealing at 700oC for 1.5h. Hybrid Organic Solar Cells (HOSC) were then prepared by using a nano hybrid material of P3HT:PCBM/nc-TiO2. The HOSC have the laminar structure of Al/P3HT:PCBM/TiO2/Ti, where P3HT:PCBM were made by spincoating. Under illumination of the standard light wavelength (? = 470 nm), the polymer luminescence quenching was observed at the heterojunctions, resulting in the charge separation. With an illumination power of 56 mW/cm2, a best hybrid solar cell exhibited an open circuit voltage of 0.60 V, short cut current density of 4.60 mA/cm2, fill factor of 0.54 and photoelectrical conversion efficiency of 2.6 \%. This suggests a useful application for fabricating ?reverse? OSCs, where the illumination light goes-in through the windows of Al-electrode cathode, instead of the indium tin oxide (ITO). For these devices, the Ohmic contact of wires to metallic Ti-substrates can be made much better than to ITO electrode. Keywords: Organic Solar cell (OSC); nanorod-like TiO2, P3HT:PCBM/nc-TiO2 heterojunctions; polymer quenching.} }