Effect of ZnO nanoparticle properties on dye-sensitized solar cell performance.
We have investigated the effect of ZnO nanoparticle properties on the dye-sensitized solar cell performance. Nanoparticles with different sizes and optical properties were considered. We found that there is a complex relationship between native defects, dye adsorption, charge transport and solar cell performance. The presence of a high concentration of nonradiative defects was found to be detrimental to photovoltaic performance, whereas for radiative defects, samples displaying orange-red defect emission exhibited better performance compared to samples with green defect emission (when the samples had similar emission intensities). Detailed discussion of the nanoparticle properties and their relationship with dye adsorption, electron injection, electron lifetime, electron transport time, and solar cell performance is given.
Department of Physics, The University of Hong Kong, Pokfulam Road, Hong Kong.
Ka Kan
KK
Wong
Annie
A
Ng
Xin Yi
XY
Chen
Yip Hang
YH
Ng
Yu Hang
YH
Leung
Kam Hong
KH
Ho
Aleksandra B
AB
Djurišić
Alan Man Ching
AM
Ng
Wai Kin
WK
Chan
Lihong
L
Yu
David Lee
DL
Phillips