Enhanced photovoltaic performance of a dye-sensitized solar cell using graphene-TiO2 photoanode prepared by a novel in situ simultaneous reduction-hydrolysis technique

被引：84

作者：

Chen, Liang ^{[1
,2
]}

Zhou, Yong ^{[1
,2
]}

Tu, Wenguang ^{[1
,2
]}

Li, Zhengdao ^{[1
,3
]}

Bao, Chunxiong ^{[1
,2
]}

Dai, Hui ^{[1
,2
,4
]}

Yu, Tao ^{[1
,2
]}

Liu, Jianguo ^{[1
,3
]}

Zou, Zhigang ^{[1
,2
,3
]}

机构：

[1] Nanjing Univ, Natl Lab Solid State Microstruct, Ecomat & Renewable Energy Res Ctr ERERC, Nanjing 210093, Jiangsu, Peoples R China

[2] Nanjing Univ, Sch Phys, Nanjing 210093, Jiangsu, Peoples R China

[3] Nanjing Univ, Dept Mat Sci & Engn, Nanjing 210093, Jiangsu, Peoples R China

[4] Qingdao Agr Univ, Coll Chem & Pharmaceut Sci, Qingdao 266109, Peoples R China

来源：

NANOSCALE | 2013年 / 5卷 / 08期

基金：

中国博士后科学基金;

关键词：

CHARGE-TRANSPORT; ELECTRODES; FILMS;

D O I：

10.1039/c3nr34059g

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

Enhanced photovoltaic performance of a DSSC using graphene-TiO2 photoelectrodes prepared by our recent in situ simultaneous reduction-hydrolysis technique (Adv. Funct. Mater., 2012, DOI: 10.1002/adfm.201202349, in press) was achieved. The DSSCs based on the G-TiO2 nanocomposites improved their overall energy conversion efficiency to 7.1%. The results prove that the promoting effect of graphene is strongly dependent on its content; namely, the efficiency of DSSCs increases and then decreases with increasing graphene content in TiO2-graphene composites. Excessive graphene in the nanocomposite leads to a decrease of the light harvest of dye molecules and thus a negative effect on the power conversion efficiency of DSSCs.

引用

页码：3481 / 3485

页数：5

共 25 条

[1] Formation of Branched ZnO Nanowires from Solvothermal Method and Dye-Sensitized Solar Cells Applications [J].