ZnO Nanostructures Synthesis by Chemical Solution Method and Its Application in Dye-Sensitized Solar Cell

• Main Authors: Po-Cheng Huang, 黃柏承
• Other Authors: Yao-Joe Yang
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/28399197361127748708

碩士 === 國立臺灣大學 === 機械工程學研究所 === 101 === In this work, we present three ZnO nanostructures synthesized by chemical solution method. Solution approaches to synthesize ZnO nanostructures are appealing because of their low growth temperature and good potential for scaling-up. By modifying different Amine ingredients, three types of ZnO nanostructures were grown, including ZnO nanowire array, substrate-free ZnO nanowire film, and Star-like ZnO nanoparticles. The influences of reaction times on the thickness and morphology of nanostructures were also presented. The XRD patterns showing highly diffraction intensity in z-direction ZnO nanowire were observed. The development of dye-sensitized solar cell utilized these nanostructures as photo anodes were presented. The dye-sensitized solar cell comprises a FTO glass with dense ZnO nanostructures as working electrode, a platinized FTO glass as counter electrode, N719-based dye, and I-/I3- liquid electrolyte. The dye-sensitized solar cell fabricated using such nanostructures yields a highest power conversion efficiency of 1.9% and the IPCE photo-current efficiency is up to 26.85%. Electrochemical impedance spectroscopy is applied to investigate the characteristics of dye-sensitized solar cells in this study. The improvement of the electron transport in the ZnO photo anode has also been demonstrated.