Studies of photoredox reactions on nanosize semiconductors

Conference · Fri Jan 31 23:00:00 EST 1997

OSTI ID:460789

Wilcoxon, J P ^[1]; Parsapour, F; Kelly, D F ^[2]

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1. Sandia National Labs., Albuquerque, NM (United States)
2. Colorado State Univ., Fort Collins, CO (United States). Dept. of Chemistry

Light induced electron transfer (ET) from nanosize semiconductors Of MoS{sub 2} to organic electron acceptors such as 2,2`-bipyridine (bpy) and methyl substituted 4,4`,5,5`-tetramethyl- 2,2`-bipyridine (tmb) was studied by static and time resolved photoluminescence spectroscopy. The kinetics of ET were varied by changing the nanocluster size (the band gap), the electron acceptor, and the polarity of the solvent. MoS{sub 2} is an especially interesting semiconductor material as it is an indirect semiconductor in bulk form, and has a layered covalent bonding arrangement which is highly resistant to photocorrosion.

• Research Organization: Sandia National Labs., Albuquerque, NM (United States)
• Sponsoring Organization: USDOE Office of Environmental Restoration and Waste Management, Washington, DC (United States)
• DOE Contract Number: AC04-94AL85000
• OSTI ID: 460789
• Report Number(s): SAND--96-2815C; CONF-970578--1; ON: DE97001883
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
40 CHEMISTRY
BIPYRIDINES
CHEMICAL PREPARATION
ELECTRON TRANSFER
ELECTRONIC STRUCTURE
HOLES
LIQUID COLUMN CHROMATOGRAPHY
MOLYBDENUM SULFIDES
OPTICAL PROPERTIES
PHOTOCHEMICAL REACTIONS
PHOTOCHEMISTRY
PHOTOLUMINESCENCE
QUANTUM EFFICIENCY
REDOX REACTIONS
SCANNING LIGHT MICROSCOPY
SEMICONDUCTOR MATERIALS