Effect of Organic and Inorganic Passivation in Quantum-Dot-Sensitized Solar Cells
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- 作者：Mauricio Solis de la Fuente ; Rafael S. S谩nchez ; Victoria Gonz谩lez-Pedro ; Pablo P. Boix ; S. G. Mhaisalkar ; Marina E. Rinc贸n ; Juan Bisquert ; Iv谩n Mora-Ser贸
- 刊名：The Journal of Physical Chemistry Letters
- 出版年：2013
- 出版时间：May 2, 2013
- 年：2013
- 卷：4
- 期：9
- 页码：1519-1525
- 全文大小：422K
- 年卷期：v.4,no.9(May 2, 2013)
- ISSN：1948-7185
文摘
The effect of semiconductor passivation on quantum-dot-sensitized solar cells (QDSCs) has been systematically characterized for CdS and CdS/ZnS. We have found that passivation strongly depends on the passivation agent, obtaining an enhancement of the solar cell efficiency for compounds containing amine and thiol groups and, in contrast, a decrease in performance for passivating agents with acid groups. Passivation can induce a change in the position of TiO2 conduction band and also in the recombination rate and nature, reflected in a change in the 尾 parameter. Especially interesting is the finding that 尾, and consequently the fill factor can be increased with the passivation treatment. Applying this strategy, record cells of 4.65% efficiency for PbS-based QDSCs have been produced.