Thermal decomposition of solution processable metal xanthates on mesoporous titanium dioxide films

A new route to quantum-dot sensitised heterojunctions

T. Lutz, A. MacLachlan, A. Sudlow, J. Nelson, M.S. Hill, K.C. Molloy, S.A. Haque

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

We introduce a straightforward route to the fabrication of metal sulfide semiconductor (e.g. CdS, Sb 2S 3, Bi 2S 3) sensitised TiO 2 films. Our approach is based upon the controllable thermal decomposition of a single-source metal xanthate precursor on a mesoporous metal oxide film. The growth of the metal sulfide deposit is confirmed by Raman and UV-Vis steady-state absorption measurements. Transient absorption spectroscopy measurements provide evidence for charge separation across the metal sulfide/TiO 2 interface. Moreover, a high yield of long-lived photogenerated charges is observed in a three-component TiO 2/metal sulfide/spiro-OMeTAD film, thus demonstrating the potential of such multicomponent films for solar energy conversion devices.
Original languageEnglish
Pages (from-to)16192-16196
Number of pages5
JournalPhysical Chemistry Chemical Physics
Volume14
Issue number47
DOIs
Publication statusPublished - 14 Dec 2012

Fingerprint

titanium oxides
Semiconductor quantum dots
thermal decomposition
Heterojunctions
heterojunctions
Pyrolysis
Metals
quantum dots
routes
Sulfides
sulfides
metals
solar energy conversion
polarization (charge separation)
metal oxides
oxide films
Absorption spectroscopy
absorption spectroscopy
Energy conversion
Solar energy

Cite this

Thermal decomposition of solution processable metal xanthates on mesoporous titanium dioxide films : A new route to quantum-dot sensitised heterojunctions. / Lutz, T.; MacLachlan, A.; Sudlow, A.; Nelson, J.; Hill, M.S.; Molloy, K.C.; Haque, S.A.

In: Physical Chemistry Chemical Physics, Vol. 14, No. 47, 14.12.2012, p. 16192-16196.

Research output: Contribution to journalArticle

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