期刊
ACS APPLIED MATERIALS & INTERFACES
卷 4, 期 3, 页码 1254-1261出版社
AMER CHEMICAL SOC
DOI: 10.1021/am201424d
关键词
DSSC; ZnO; nanoparticles; photoluminescence; defects; photovoltaics
资金
- project RGC CRF [CityU6/CRF/08]
- University of Hong Kong
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.
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