Design of Titania Photoanodes With Varied Nanostructure Morphologies for Dye-sensitized Solar cell

• Main Authors: Lan, Zih-Jian, 藍子建
• Other Authors: Eric Wei-Guang Diau
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/15514499920029297040

碩士 === 國立交通大學 === 應用化學系碩博士班 === 101 === In this thesis , we introduce two different morphologies of titanium dioxide and their application in DSSC using bilayer or multilayer(ML) configurations.The first topic is of TiO2 nanorods and they are devided into three categories:(1). general nanorod (NR)；(2).large size nanorod (LNR)；(3). chain-like nanorod (CNR). After kinetics analysis of devices we found that the electron transport ability has the trend CNR > NR > LNR. We found that NR-based devices with ML configuration had the best performance.The LNR had poor crystallinity so that the device performance was poor. Therefore we used the composites of nanoparticles and CNR as photoanodes and we found that the composite films to improve the amounts of dye loading and to reduce charge recombination.The best performance of the CNR/NP devices using Z907 dye attained . The second topic is octahedron-like TiO2 and they are divided into four categories according to their size: (1).HD1(30 nm - 50 nm)；(2).HD1.5(50 nm – 100nm)；(3).HD2(100 nm – 150nm)；(4).HD3 (150 nm – 200 nm). We fabricated HD devices with ML configurations to gone the photovoltaic performance reaching 10.07%. The same result was also obtained with a HD1 bi-layer configuration which becomes a new world record for Z907-based solar cell.