硅酸盐学报2013，Vol.41Issue(1)：12-18,7.DOI:10.7521/j.issn.0454-5648.2013.01.03
ZnO的水热合成及其在TiO2/ZnO染料敏化太阳能电池中的应用
Hydrothermal Synthesis and Photovoltaic Properties of ZnO Particles and Their Application in TiO2/ZnO-Based Dye-sensitized Solar Cells
摘要
Abstract
ZnO crystals with different sizes and morphologies were synthesized with different mineralizers (i.e.,hexamethylenetetramine (HMT,(CH2)6N4,99％),urea (CO(NH2)2),and lithium hydroxide (LiOH)) by a hydrothermal method.Their size,morphology and opto-electronic properties were characterized by X-ray diffraction,scanning electron microscopy,UV-Vis diffuse reflectance spectroscopy and surface photovoltage spectroscopy,respectively.The results indicate that the products obtained in the presence of HMT and LiOH are hexagonal wurtzite ZnO particles,and the crystallinity of the product obtained in the presence of CO(NH2)2 is incomplete.The ZnO nanocrystals obtained in the presence of LiOH exhibited a superior photoelectronic response,which could be related to the band-to-band transition and exciton transition.The ZnO crystals obtained were used in dye-sensitized solar cells (DSSCs),as the upper layer of photoanode in TiO2-based DSSCs,showing a light-scattering effect,and the under layer was YiO2 nanocrystal film.In addition,the monolayer ZnO-based DSSCs were also prepared for the comparison purpose.The photoelectronic conversion efficiency of DSSCs was analyzed via the photocurrent-voltage (I-V) curve measurement.It was indicated that the photovoltaic performance of DSSCs with TiO2/ZnO double-layer photoanode was better than that of the monolayer ZnO DSSCs,implying that the light absorption enhancement of DSSCs with a light-scattering layer was due to the incorporation of a greater specific surface area underlayer of the nanocrystalline TiO2 and a larger size of ZnO light scattering film.关键词
染料敏化太阳能电池/氧化锌/二氧化钛/水热合成Key words
dye-sensitized solar cells/ zinc oxide/ titanium dioxide/ hydrothermal synthesis分类
建筑与水利引用本文复制引用
雷芳,陈昊鸿,施鹰,谢建军..ZnO的水热合成及其在TiO2/ZnO染料敏化太阳能电池中的应用[J].硅酸盐学报,2013,41(1):12-18,7.基金项目
中国博士后科学基金面上资助(20090460622) （20090460622）
上海市博士后资助计划面上项目(10R21413900). （10R21413900）
