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Preparation and characterization of nanorod-like TiO2 and ZnO films used for charge- transport buffer layers in P3HT based organic solar cells

Thi Thao Tran and Dinh Long Dang and Van Truong Vo and Nang Dinh Nguyen (2016) Preparation and characterization of nanorod-like TiO2 and ZnO films used for charge- transport buffer layers in P3HT based organic solar cells. AIP Conference Proceedings, 1763 (030002). 030002-1. ISSN 1551-7616

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Abstract

With the aim of findingout the appropriate buffer layers for organic solar cells (OSC), TiO2 and ZnO on ITO/glass were prepared as nanorod-like thin films. The TiO2 films were crystallyzed in the anatase phase and the ZnO films, in the wurtzite structure. The nanorods in both the fims have a similar size of 15 to 20 nm in diameter and 30 to 50 nm in length. The nanorods have an orientation nearly perpendicular to the ITO-substrate surface. From UV-Vis data the bandgap of the TiO2 and ZnO films were determined tobe 3.26 eV and 3.42 eV, respectively. The laminar organic solar cells with added TiO2 and ZnO, namely ITO/TiO2/P3HT:PCBM/LiF/Al (TBD) and ITO/ZnO/P3HT:PCBM/LiF/Al (ZBD)were made for characterization of the energy conversion performance. As a result, comparing to TiO2,the nanorod-likeZnO filmwas found to be a much better buffer layer that made the fill factor improve from a value of 0.60 for TBD to 0.82 for ZBD, and consequently thePCE was enhanced from 0.84 for TBD to 1.17% for ZBD.

Item Type:Article
Subjects:Engineering Physics
Divisions:Faculty of Engineering Physics and Nanotechnology (FEPN)
ID Code:2335
Deposited By: Dr Long Dang
Deposited On:31 Dec 2016 14:20
Last Modified:31 Dec 2016 14:20

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