Energy and charge transfers between (Bu{sub 4}N){sub 2}(Ru)(dcbpyH){sub 2}(NCS){sub 2} (N719) and ZnO thin films

Journal Article · Mon Mar 15 04:00:00 EDT 2010 · Journal of Applied Physics

DOI:https://doi.org/10.1063/1.3309756· OSTI ID:21476384

Manman, Ni; Qiang, Cheng; Zhang, W F ^[1]

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1. Key Laboratory of Photovoltaic Materials of Henan Province and School of Physics and Electronics, Henan University, Kaifeng 475001 (China)

ZnO thin films and (Bu{sub 4}N){sub 2}(Ru)(dcbpyH){sub 2}(NCS){sub 2} (called N719) sensitized ZnO thin films are grown on fluorine-doped tin oxide (FTO) conducting glass substrates using laser molecular beam epitaxy. Ultraviolet-visible absorption, photoluminescence (PL), surface photovoltage spectroscopy, and Raman scattering are employed to probe into the transition process of photogenerated charges and the interaction between ZnO and N719. The experimental results indicate that there is a significant electronic interaction between N719 and ZnO through chemiadsorption. The interaction greatly enhances the photogenerated charge separation and thus the photovoltaic response of the ZnO film but remarkedly weakens its radiative recombination, i.e., PL, implying strong energy and charge transfer occurring between N719 and ZnO. In addition, a new PL peak observed at about 720 nm in N719 sensitized ZnO/FTO is attributed to the electron-hole recombination of N719.

• OSTI ID: 21476384
• Journal Information: Journal of Applied Physics, Journal Name: Journal of Applied Physics Journal Issue: 5 Vol. 107; ISSN JAPIAU; ISSN 0021-8979
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
CHALCOGENIDES
CHARGE EXCHANGE
CHEMICAL REACTIONS
CHEMISORPTION
CRYSTAL GROWTH METHODS
DOPED MATERIALS
ELECTROMAGNETIC RADIATION
ELEMENTS
EMISSION
EPITAXY
FILMS
FLUORINE
HALOGENS
HOLES
LASERS
LUMINESCENCE
MATERIALS
MOLECULAR BEAM EPITAXY
NONMETALS
ORGANIC COMPOUNDS
OXIDES
OXYGEN COMPOUNDS
PHOTOELECTRIC EFFECT
PHOTOLUMINESCENCE
PHOTON EMISSION
PHOTOVOLTAIC EFFECT
RADIATIONS
RAMAN EFFECT
RAMAN SPECTRA
RECOMBINATION
SEMICONDUCTOR DEVICES
SEMICONDUCTOR LASERS
SEMICONDUCTOR MATERIALS
SEPARATION PROCESSES
SOLID STATE LASERS
SORPTION
SPECTRA
SUBSTRATES
THIN FILMS
TIN COMPOUNDS
TIN OXIDES
ULTRAVIOLET RADIATION
ULTRAVIOLET SPECTRA
ZINC COMPOUNDS
ZINC OXIDES