Hybrid photoanode films based on sparse ZnO rod array-TiO_2 nanoparticles in dye-sensitized solar cells

查看全文 作　　者：WANG [1]CaiLu;GAO [1]XiangDong;LI [1]XiaoMin;JIANG [2]ZhengWu;YANG [2]ZhengHong;GU [1]ZhengYing;HE [1]Peng

机构地区：[1]State Key Lab of High Performance Ceramics and Superfine Microstructures,Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 200050,China;[2]Key Laboratory of Advanced Civil Engineering Materials of Ministry of Education,Tongji University,Shanghai 200092,China

出　　处：《Science China(Physics,Mechanics & Astronomy)》索引2012年第55卷第7期,共6页

基　　金：supported by the National Basic Research Program of China (Grant Nos. 2009CB623304 and 2011CB013805;the National Natural Science Foundation of China (Grant Nos. 51072214 and 51002174) 摘　　要：ZnO-TiO2 hybrid photoanodes were fabricated via the doctor-blade method by integrating vertically-grown sparse ZnO arrays with hydrothermal TiO2 nanoparticles. A special surface-coating technique was developed to deposit a thin TiO2 layer on the surface of ZnO rods. Microstructure, optical and photoelectrochemical performance of the hybrid photoanodes were investigated. The denser ZnO array exhibited bad filling behavior of nanoparticles in the interspace of ZnO rods, strong scattering and low conversion efficiency (0.27%). The sparser array showed a much better integrated microstructure, improved transmittance and high conversion efficiency (2.68%). The surface modification of ZnO rods by the TiO2 thin layer was found useful in improving the interfacial microstructure between the ZnO rod and the TiO2 bulk film, and the total conversion efficiency of 3.01% was achieved, higher than that of the pure TiO2 nanoparticle cell (2.93%). The increased scattering effects on the incident light, the enhanced electron transportation at TiO2/dye/electrolyte interface, and the inhabited recombination were responsible for this improvement. 关键词：纳米二氧化钛稀疏阵列染料敏化太阳能电池氧化锌混合光 TIO2纳米粒子阳极膜纳米TiO2

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Hybrid photoanode films based on sparse ZnO rod array-TiO_2 nanoparticles in dye-sensitized solar cells

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