title: Enhancing Performance of CdS Quantum Dot-Sensitized Solar Cells by Two-Dimensional g-C3N4Modified TiO2Nanorods.
abstract: In present work, two-dimensional g-C3N4was used to modify TiO2nanorod array photoanodes for CdS quantum dot-sensitized solar cells (QDSSCs), and the improved cell performances were reported. Single crystal TiO2nanorods are prepared by hydrothermal method on transparent conductive glass and spin-coated with g-C3N4. CdS quantum dots were deposited on the g-C3N4modified TiO2photoanodes via successive ionic layer adsorption and reaction method. Compared with pure TiO2nanorod array photoanodes, the g-C3N4modified photoanodes showed an obvious improvement in cell performances, and a champion efficiency of 2.31 % with open circuit voltage of 0.66 V, short circuit current density of 7.13 mA/cm2, and fill factor (FF) of 0.49 was achieved, giving 23 % enhancement in cell efficiency. The improved performances were due to the matching conduction bands and valence bands of g-C3N4and TiO2, which greatly enhanced the separation and transfer of the photogenerated electrons and holes and effectively suppressed interfacial recombination. Present work provides a new direction for improving performance of QDSSCs.
authors.affiliation: Key Laboratory of Advanced Structural Materials, Ministry of Education, Changchun University of Technology, Changchun, 130012, China.
authors.forename: Qiqian
authors.initials: Q
authors.lastname: Gao
authors.affiliation: Key Laboratory of Advanced Structural Materials, Ministry of Education, Changchun University of Technology, Changchun, 130012, China.
authors.forename: Shihan
authors.initials: S
authors.lastname: Sun
authors.affiliation: Key Laboratory of Advanced Structural Materials, Ministry of Education, Changchun University of Technology, Changchun, 130012, China. lixuesong@ccut.edu.cn.
authors.forename: Xuesong
authors.initials: X
authors.lastname: Li
authors.affiliation: Key Laboratory of Advanced Structural Materials, Ministry of Education, Changchun University of Technology, Changchun, 130012, China.
authors.forename: Xueyu
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Key Laboratory of Advanced Structural Materials, Ministry of Education, Changchun University of Technology, Changchun, 130012, China.
authors.forename: Lianfeng
authors.initials: L
authors.lastname: Duan
authors.affiliation: Key Laboratory of Advanced Structural Materials, Ministry of Education, Changchun University of Technology, Changchun, 130012, China. lw771119@hotmail.com.
authors.forename: Wei
authors.initials: W
authors.lastname: Lü
keywords: Photoelectronical performance; Solar cells; TiO2 nanorod arrays; g-C3N4