WANG Yanxiang，SHEN Zhichao，SUN Jian，LI Jiake，YANG Zhishen
(Jingdezhen Ceramic Institute, Jingdezhen 333403, Jiangxi, China)
Abstract: Photoanode, playing a role in dye loading and electronic transmission, is an important part of dye sensitized solar cells (DSSCs). ZnO is one of the most commonly used photoanode materials. In this paper, NaOH and Zn(NO3)2·6H2O were used as raw materials to prepare ZnO-based DSSCs by solid-state grinding method. The effects of water content, reaction temperature and calcination temperature on the properties of ZnO photoanodes and DSSCs were studied. XRD and SEM were used to characterize the phase composition and morphology of ZnO photoanode respectively. The photoelectric performance of DSSCs was measured by using solar simulator, electrochemical workstation and IPCE instrument. Results showed that the DSSCs had optimum performance when the mass ratio of water and NaOH, reaction temperature and calcination temperature of the photoanode were 1 : 1, 75 ℃ and 450 ℃, respectively. The photoelectric conversion efficiency (PCE), the open circuit voltage (Voc), short circuit current density (Jsc) and fill factor (FF) of the DSSCs were 5.51%, 0.70 V, 12.72 mA/cm2 and 0.62 , respectively.
Key words: dye sensitized solar cells; solid-state grinding; ZnO photoanode; photoelectric performance