Details

Autor(en) / Beteiligte

• Chang, Shuai
• Li, Quan
• Xiao, Xudong
• Wong, King Young
• Chen, Tao

Titel

Enhancement of low energy sunlight harvesting in dye-sensitized solar cells using plasmonic gold nanorods

Ist Teil von

• Energy & environmental science, 2012-11, Vol.5 (11), p.9444-9448

Erscheinungsjahr

2012

Quelle

Alma/SFX Local Collection

Beschreibungen/Notizen

• This communication describes the use of Ag sub(2)S-encapsulated Au nanorods (AuNR[at]Ag sub(2)S) to enhance longer wavelength sunlight utility in dye-sensitized solar cells (DSSCs). We observed that the longitudinal plasmon resonance of AuNRs induces a remarkable increase of 37.6% in photocurrent generation at 600-720 nm. Optical characterizations indicate that the increased optical density and decreased light transmission as a result of AuNRs incorporation engender the striking improvement. With AuNR[at]Ag sub(2)S, the final power conversion efficiency (PCE) of the DSSC with a thin anode (6 mu m) increases from 4.3% to 5.6%, which is comparable to that of a pure TiO sub(2) anode based DSSC (5.8%) with a film thickness of 11 mu m. Further, incorporation of AuNR[at]Ag sub(2)S into the thick anode leads to the PCE increasing to 7.1%.