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

Nguyen Nang Dinh, Tran Thi Thao, Do Ngoc Chung, Vo Van Truong

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Published Mar 15, 2014

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DINH, Nguyen Nang et al. Characterization of Organic Solar Cells Made from Hybrid Photoactive Materials of P3HT:PCBM/nc-TiO2. VNU Journal of Science: Mathematics - Physics, [S.l.], v. 30, n. 1, mar. 2014. ISSN 2588-1124. Available at: <https://js.vnu.edu.vn/MaP/article/view/596>. Date accessed: 22 nov. 2024.
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Vol 30 No 1
Section
Review Article

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Abstract

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 weremade by spincoating. Under illumination of the standard light wavelength (l = 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.

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