Zeng, Tsung-WeiTsung-WeiZengLin, Yun-YueYun-YueLinLo, Hsi-HsingHsi-HsingLoChen, Chun-WeiChun-WeiChenChen, Cheng-HsuanCheng-HsuanChenLiou, Sz-ChianSz-ChianLiouHuang, Hong-YunHong-YunHuangSu, Wei-FangWei-FangSuWEI-FANG SUCHUN-WEI CHEN2018-09-102018-09-102006http://www.scopus.com/inward/record.url?eid=2-s2.0-33846118355&partnerID=MN8TOARShttp://scholars.lib.ntu.edu.tw/handle/123456789/326872This is a study of hybrid photovoltaic devices based on TiO2 nanorods and poly[2-methoxy-5-(2′-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV). We use TiO2 nanorods as the electron acceptors and conduction pathways. Here we describe how to develop a large interconnecting network within the photovoltaic device fabricated by inserting a layer of TiO2 nanorods between the MEH-PPV:TiO2 nanorod hybrid active layer and the aluminium electrode. The formation of a large interconnecting network provides better connectivity to the electrode, leading to a 2.5-fold improvement in external quantum efficiency as compared to the reference device without the TiO2 nanorod layer. A power conversion efficiency of 2.2% under illumination at 565nm and a maximum external quantum efficiency of 24% at 430nm are achieved. A power conversion efficiency of 0.49% is obtained under Air Mass 1.5 illumination. © IOP Publishing Ltd.application/pdfapplication/pdf[SDGs]SDG7Electrochemical electrodes; Electronic structure; Interconnection networks; Quantum efficiency; Semiconductor devices; Titanium dioxide; Electron acceptors; Hybrid photovoltaic devices; Nanorods; Power conversion efficiency; Nanostructured materialsjournal article10.1088/0957-4484/17/21/017