The effect of TiO2 nanoparticle on the photoconductivity properties of organic MEH-PPV thin films for organic photovoltaic cell applications

2012 IEEE Symposium on Humanities, Science and Engineering Research Pub Date : 2012-06-24 DOI:10.1109/SHUSER.2012.6268884

F. Zahid, M. Sarah, M. Rusop

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引用次数: 3

Abstract

In this paper, we have deposited organic: inorganic thin films using poly [2-methoxy 5-(2'-ethyl-hexyloxy)-1, 4-phenylene vinylene] (MEH-PPV) polymer as electron donator with titanium dioxide (TiO2) acting as an electron acceptor, by spin-coating deposition technique. We have investigated at 10 wt%, 20 wt%, 30 wt% and 40 wt% of TiO2 composition effects on electrical, photoconductivity and optical properties of the nanocomposited MEH-PPV: TiO2 thin films. Current-Voltage (I-V) and optical characteristics of the thin films found that the composition of TiO2 in MEH-PPV might optimize the nanocomposited thin films performance. For optimum thin film performance, composition of TiO2 at 20 wt% gives the highest I-V and photoconductivity properties at 75.04×10-3 S.cm-1. Whilst for optical properties, at 10 wt% shows an optimum absorbance with MEH-PPV and TiO2 exhibited strong absorption at wavelength of 500 nm in visible range and 340 nm in UV ranges respectively. It is conjectured that by introduced TiO2 nanoparticle in MEH-PPV matrices, it could lead to significant improvement in photoconductivity and optical characteristics for organic photovoltaic cell applications.

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TiO2纳米粒子对有机光伏电池用MEH-PPV薄膜光导性能的影响

本文以聚[2-甲氧基5-(2′-乙基己氧基)- 1,4 -苯基乙烯](MEH-PPV)聚合物为电子给体，二氧化钛(TiO2)为电子受体，采用自旋镀膜技术制备了有机无机薄膜。我们研究了10 wt%， 20 wt%， 30 wt%和40 wt% TiO2组成对纳米复合MEH-PPV: TiO2薄膜电导率，光导率和光学性能的影响。薄膜的电流-电压(I-V)和光学特性发现，在MEH-PPV中加入TiO2可能会优化纳米复合薄膜的性能。为了获得最佳的薄膜性能，20% wt%的TiO2在75.04×10-3 S.cm-1处具有最高的I-V和光电导率。而在光学性能方面，10 wt%的MEH-PPV表现出最佳的吸光度，TiO2分别在可见光波长500 nm和紫外波长340 nm处表现出强吸收。推测通过在MEH-PPV基体中引入TiO2纳米粒子，可以显著改善有机光伏电池的光导性能和光学特性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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2012 IEEE Symposium on Humanities, Science and Engineering Research

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