title: Highly efficient CdS quantum dot-sensitized solar cells based on a modified polysulfide electrolyte.
abstract: A modified polysulfide redox couple, [(CH(3))(4)N](2)S/[(CH(3))(4)N](2)S(n), in an organic solvent (3-methoxypropionitrile) was employed in CdS quantum dot (QD)-sensitized solar cells (QDSSCs), and an unprecedented energy conversion efficiency of up to 3.2% was obtained under AM 1.5 G illumination. The QDs were linked to nanoporous TiO(2) via covalent bonds by using thioglycolic acid, and chemical bath deposition in an organic solvent was then used to prepare the QDSSCs, facilitating high wettability and superior penetration capability of the TiO(2) films. A very high fill factor of 0.89 was observed with the optimized QDSSCs.
authors.affiliation: State Key Laboratory of Fine Chemicals, DUT-KTH Joint Education and Research Center on Molecular Devices, Dalian University of Technology (DUT), 2 Linggong Road, 116012 Dalian, China.
authors.forename: Ling
authors.initials: L
authors.lastname: Li
authors.forename: Xichuan
authors.initials: X
authors.lastname: Yang
authors.forename: Jiajia
authors.initials: J
authors.lastname: Gao
authors.forename: Haining
authors.initials: H
authors.lastname: Tian
authors.forename: Jianzhang
authors.initials: J
authors.lastname: Zhao
authors.forename: Anders
authors.initials: A
authors.lastname: Hagfeldt
authors.forename: Licheng
authors.initials: L
authors.lastname: Sun