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Characterization of Organic Solar Cells Made from Hybrid Photoactive Materials of P3HT:PCBM/nc-TiO2

Nguyen, Nang Dinh and Tran, Thi Thao and Do, Ngoc Chung (2014) Characterization of Organic Solar Cells Made from Hybrid Photoactive Materials of P3HT:PCBM/nc-TiO2. VNU Journal of Mathematics-Physics, 30 (1). pp. 8-15.

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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.

Item Type: Article
Subjects: Engineering Physics
Divisions: Faculty of Engineering Physics and Nanotechnology (FEPN)
Depositing User: Ms. Cam Le Tran Thi
Date Deposited: 19 Nov 2015 04:05
Last Modified: 19 Nov 2015 04:07

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