Fast electron transfer across semiconductor-molecule interfaces: GaAs/Co(Cp)(sub 2)(super +/0)
Article Abstract:
The kinetics of majority electron transfer in the dark from n-GaAs electrodes to cobaltocenium (Co(Cp)(sub 2)(super +)) acceptors in acetonitrile has been investigated experimentally using electrochemical impedance spectroscopy, current-potential characteristics and quartz crystal microbalance studies. Experimental results were compared to those obtained from theoretical analysis, which was conducted by calculating the adsorption energy and molecular structure of the cobaltocenium acceptors at the GaAs surface using high level density functional theory as well as semiempirical methods. Both experimental and theoretical results show that adsorption of the Co(Cp)(sub 2)(super +/0) redox system takes place on GaAs.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1999
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Composition and structure of the Cd- and S-terminated CDS{0001}-(1x1) surfaces
Article Abstract:
A study was conducted to investigate the surface chemistry of Cd- and S-terminated CdS{0001}-(1x1) surfaces. Time-of-flight scattering and recoiling spectrometry, low-energy electron diffraction (LEED) and trajectory simulations were employed in analyzing the surfaces. The Cd-terminated {0001} surface recorded a Cd concentration of [Cd}/[S] = 1.0/0.14. The LEED pattern showed O and small H recoil peaks. The partial occupancy of the dangling bonds was the reason behind the instability of bulk-terminated polar surfaces of compound semiconductors.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 1998
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An oxide semiconductor nanoparticle in an aqueous medium: A surface charge density investigation
Article Abstract:
A surface charge density investigation into an oxide semiconductor nanoparticle in an aqueous medium was made.
Publication Name: Journal of Physical Chemistry B
Subject: Chemicals, plastics and rubber industries
ISSN: 1520-6106
Year: 2000
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