摘要
采用水热法制备ZnWO4薄膜,研究了基体在反应釜不同位置对ZnWO4薄膜及其在染料敏化太阳能电池(DSSCs)中的光电性能的影响。采用XRD、SEM、UV-Vis、I-V及EIS对ZnWO4薄膜的结构、形貌及光电性能进行了表征。结果表明,反应釜不同位置得到的ZnWO4薄膜,均属黑钨矿型结构。薄膜的致密程度和厚度由反应釜顶部到底部依次增加,并且组成薄膜的颗粒由椭圆球状逐渐变为纳米棒状。位于水热反应釜中部位置生长的ZnWO4薄膜组装的DSSCs光电转换效率最高。
ZnWO4 thin film was synthesized through hydrothermal method. The photoelectric performance of ZnWO4 with film with different position of autoclave was studied in the dye-sensitized solar cells （DSSCs）. The structure, surface morphology and photovohaic property of the ZnWO4 thin films were characterized by X-ray diffraction （ XRD）, scanning electron microscopy （ SEM）, UV-Vis, current- voltage curve （I-V） and electrochemical impedance spectra （EIS）. The results indicate that the ZnWO4 film belongs to wolframite type. The compact density and thickness of the film increase from top to bottom of the autoclave. And the particles made of the film transform oval into nanorod. DSSCs with ZnWO4 film locating middle of autoclave shows highest photovohaic conversion efficiency.
出处
《人工晶体学报》
EI
CAS
CSCD
北大核心
2014年第1期93-98,104,共7页
Journal of Synthetic Crystals
基金
河南省科技计划项目(122300410297)
