Flexible dye-sensitized ZnO quantum dots solar cells

作者：Pang, Aiying^*; Chen, Caiyun; Chen, Ling; Liu, Wei; Wei, Mingdeng

来源：RSC Advances, 2012, 2(25): 9565-9570.

DOI：10.1039/c2ra21144k

• NANOSTRUCTURED ZNO
• PHOTOCATALYTIC ACTIVITY
• NANOCRYSTALLINE TIO2
• ZINC-OXIDE
• FILMS
• ADSORPTION
• ELECTRODES
• EFFICIENCY
• ACID)RUTHENIUM(II)
• CONVERSION

ZnO QDs were successfully synthesized by using a simple synthetic route. The synthesized ZnO QDs have different shapes with highly crystalline nature and their size was found to be ca. 3-5 nm. At the same time, a series of modified N719 dyes were obtained via ion-exchange reactions and characterized by FTIR and HRMS measurements. When the modified N719 dyes were used as a sensitizer for ZnO QDs-based flexible solar cells, the photovoltaic properties were enhanced significantly. A highest efficiency of 2.94% was achieved; this might be attributed to the fact that the aggregate of Zn2+/dye on the surface of ZnO QDs can be suppressed efficiently owing to a less carboxylated (COOH) bipyridyl ligand in the modified N719 dye, inhibiting the formation of chelation between ZnO QDs and dye.

• 出版日期2012
• 单位福州大学