Near field enhanced photocurrent generation in p-type dye-sensitized solar cells.

ABSTRACT: Over the past few decades, the field of p-type dye-sensitized solar cell (p-DSSC) devices has undergone tremendous advances, in which Cu-based delafossite nanocrystal is of prime interest. This paper presents an augment of about 87% improvement in photocurrent observed in a particular configuration of organic dye P1 sensitized CuCrO2 delafossite nanocrystal electrode coupled with organic redox shuttle, 1-methy-1H- tetrazole-5-thiolate and its disulfide dimer when Au nanoparticles (NPs, with diameter of about 20?nm) is added into the photocathode, achieving a power convert efficiency of 0.31% (measured under standard AM 1.5?G test conditions). Detailed investigation shows that the local electrical-magnetic field effect, induced by Au NPs among the mesoporous CuCrO2 film, can improve the charge injection efficiency at dye/semiconductor interface, which is responsible for the bulk of the gain in photocurrent.

SUBMITTER: Xu X 

PROVIDER: S-EPMC3912483 | biostudies-literature | 2014 Feb

REPOSITORIES: biostudies-literature