Abstract
High-performance solid-state PbS quantum dot-sensitized solar cells (QD-SSCs) with stable 9.2% power conversion efficiency at 1 Sun condition are demonstrated by introduction of hybrid perovskite interlayer. The PbS QDs formed on mesoscopic TiO2 (mp-TiO2) by spin-assisted successive precipitation and anionic exchange reaction method do not exhibit PbSO4 but have PbSO3 oxidation species. By introducing perovskite interlayer in between mp-TiO2/PbS QDs and poly-3-hexylthiophene, the PbSO3 oxidation species are fully removed in the PbS QDs and thereby the efficiency of PbS QD-SSCs is enhanced over 90% compared to the pristine PbS QD-SSCs.
Original language | English |
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Pages (from-to) | 41104-41110 |
Number of pages | 7 |
Journal | ACS Applied Materials and Interfaces |
Volume | 9 |
Issue number | 47 |
DOIs | |
Publication status | Published - 2017 Nov 29 |
Keywords
- lead sulfide
- passivation
- perovskite
- quantum dots
- sensitized solar cells
ASJC Scopus subject areas
- Materials Science(all)