title: Structure and photovoltaic properties of ZnO nanowire for dye-sensitized solar cells.
abstract: Aligned ZnO nanowires with different lengths (1 to approximately 4 μm) have been deposited on indium titanium oxide-coated glass substrates by using the solution phase deposition method for application as a work electrode in dye-sensitized solar cells (DSSC). From the results, the increases in length of zinc oxide (ZnO) nanowires can increase adsorption of the N3 dye through ZnO nanowires to improve the short-circuit photocurrent (Jsc) and open-circuit voltage (Voc), respectively. However, the Jsc and Voc values of DSSC with ZnO nanowires length of 4.0 μm (4.8 mA/cm2 and 0.58 V) are smaller than those of DSSC with ZnO nanowires length of 3.0 μm (5.6 mA/cm2 and 0.62 V). It could be due to the increased length of ZnO nanowires also resulted in a decrease in the transmittance of ZnO nanowires thus reducing the incident light intensity on the N3 dye. Optimum power conversion efficiency (η) of 1.49% was obtained in a DSSC with the ZnO nanowires length of 3 μm.
authors.affiliation: Department of Electronic Engineering, Hsiuping University of Science and Technology, Taichung, 412, Taiwan. kmc@mail.hust.edu.tw.
authors.forename: Ming-Cheng
authors.initials: MC
authors.lastname: Kao
authors.forename: Hone-Zern
authors.initials: HZ
authors.lastname: Chen
authors.forename: San-Lin
authors.initials: SL
authors.lastname: Young
authors.forename: Chen-Cheng
authors.initials: CC
authors.lastname: Lin
authors.forename: Chung-Yuan
authors.initials: CY
authors.lastname: Kung