Plasmon enhanced Dye-Sensitized Solar Cells by using Atomic Layer Deposition of TiO2 on gold/silver nanoparticles

Kuang Che Lee ,  Su-Jien Lin 

Department of Materials Science and Engineering, National tsing Hua University, Hsinchu, Taiwan

Abstract

Plasmonic nanoparticles have unique optical properties that lend themselves to unusual optical applications, potentially including use as absorption amplifiers in dye-sensitized solar cells (DSSCs). Atomic layer deposition of TiO2 was examined as a means of not only controlling thickness of films precisely but also protecting particles while simultaneously incorporating them into DSSC functional photoelectrodes. We find that enhanced performance was observed for dye-sensitized solar cells when nanoparticles coated with a thin layer of TiO2 serve as electrodes. An appropriate size of nanoparticles is able to reduce reflection losses because the particles have larger cross-sectional area in the surface plasmon resonance range. The results show that the effects of the surface plasmon resonance of Ag or Au nanoparticles are potential for improve the conversion efficiency of DSSC and the structure and the quantity of particles were very crucial for the application of the surface Plasmon resonance effect to absorption coefficient of electrodes.

 

Presentation: Oral at E-MRS Fall Meeting 2009, Symposium G, by Kuang Che Lee
See On-line Journal of E-MRS Fall Meeting 2009

Submitted: 2009-05-11 13:06
Revised:   2009-06-07 00:48