标题：Photosensitization of TiO _2 nanorods with CdS quantum dots for photovoltaic applications: A wet-chemical approach
作者：Wang, C.;Jiang, Z.;Wei, L.;Chen, Y.;Jiao, J.;Eastman, M.;Liu, H.
作者机构：[Wang, C] School of Physics, State Key Laboratory of Crystal Materials, Shandong University, Jinan 250100, China;[ Jiang, Z] School of Physics, State 更多
通讯作者地址：[Chen, YX]Shandong Univ, Sch Phys, State Key Lab Crystal Mat, Jinan 250100, Peoples R China.
摘要：We combine CdS semiconductor quantum dots and single-crystalline rutile TiO _2 nanorod arrays to produce a practical quantum dot sensitized solar cell. A facile wet-chemical approach was implemented for growth of this CdS@TiO _2 architecture. Rutile TiO _2 nanorod arrays with lengths of 1-2μm and diameters of 40-60nm were synthesized on fluorine-doped tin oxide glass by a hydrothermal process in a titanium tetrachloride precursor solution. CdS quantum dots with a size of 5-10nm were deposited onto a TiO _2 nanorod surface using an ultrasonic-assisted chemical bath deposition method. The resulting CdS quantum dots and TiO _2 nanorods formed a type-II heterojunction and showed increased absorption over visible light range. Incident photon-to-current conversion efficiencies (IPCE) as high as 85% and power conversion efficiencies of 2.54% were obtained using a polysulfide electrolyte.