Ligand capping effect for dye solar cells with a CdSe quantum dot sensitized ZnO nanorod photoanode.
We report a quantum dot sensitized solar cell (QDSSC) with a thioglycolic acid (TGA) capped CdSe quantum dot (QD) sensitized ZnO nanorod photoanode. As revealed by UV-Vis absorption spectrum and transmission electron microscopy, the quantum dots can be effectively adsorbed onto ZnO nanorods. By studying the emission decay, the quenching of the CdSe QDs by ZnO nanorod was verified, and an electron transfer (from QD to ZnO) rate constant of 1 x 10(8) s(-1) was obtained. The efficiency of the as-prepared QDSSC was 0.66% and an incident power conversion efficiency of 22% at 400 nm was achieved.
Sun
Xiao Wei
XW
School of Electrical and electronic Engineering, Nanyang Technological University, Nanyang Avenue, Singapore, Singapore. exwsun@ntu.edu.sg
Chen
Jing
J
Song
Jun Ling
JL
Zhao
De Wei
DW
Deng
Wei Qiao
WQ
Lei
Wei
W
D019187:Cadmium Compounds / Q000737:chemistry* / Q000528:radiation effects; D011211:Electric Power Supplies; D004566:Electrodes; D004867:Equipment Design; D019544:Equipment Failure Analysis; D005456:Fluorescent Dyes / Q000737:chemistry*; D008024:Ligands; D008027:Light; D049329:Nanostructures / Q000737:chemistry* / Q000528:radiation effects; D045663:Quantum Dots; D018036:Selenium Compounds / Q000737:chemistry* / Q000528:radiation effects; D012993:Solar Energy; D015034:Zinc Oxide / Q000737:chemistry* / Q000528:radiation effects
D019187:Cadmium Compounds; D005456:Fluorescent Dyes; D008024:Ligands; D018036:Selenium Compounds; C058667:cadmium selenide; D015034:Zinc Oxide