Conditions under which heterogeneous charge-transfer rate constants can be extracted from transient photoluminescence decay data of semiconductor/liquid contacts as determined by two-dimensional transport modeling

Article Abstract:

The two-dimensional simulation code ToSCA was used to conduct an extensive series of digital simulations of the decay dynamics of photoexcited charge carriers at a semiconductor/liquid interface. The objective is to identify conditions with respect to excitation intensity and applied potential where the rate constants for charge transfer and surface recombination can be extracted from the photoluminescence decay data. Results prove new insight into the analysis of photoluminescence decay data at semiconductor/liquid contacts.

Charge transfer, Photoluminescence

---

Simulations of the steady-state current density vs potential characteristics of semiconducting electrodes

Article Abstract:

A study was conducted to analyze the steady-state current density versus potential behavior of semiconductor/liquid interfaces. A series of digital simulations was carried out. Results indicated that the photovoltage of an n-type semiconductor/liquid interface should not change if the concentration of the minimized form of the redox species is held constant but the concentration of the oxidized form of the redox species is varied over a significant range in the solution phase.

Electrodes

---

Photoelectrochemical behavior of n-GaAs and n-AlxGa1-xAs in CH3CN

Article Abstract:

It has been established that n-GaAs/CH3CN contacts are subject to partial Fermi level pinning in response to a change in E(A/A-) over a wide potential range. The members of the ternary n-AlxGa1-xAs alloy series show similar electrochemical behaviour to that of the parent n-GaAs electrode.

Electrochemistry, Gallium arsenide

Similar abstracts:

• Abstracts: Inverted region electron transfer demonstrated by electrogenerated chemiluminescence at the liquid/liquid interface
• Abstracts: Fabrication and femtosecond optical response of Langmuir-Blodgett films with two-dimensional J-aggregates. Surface modification of CdS nanoparticles with MoS(sub4super2-): a case study of nanoparticle-modifier electronic interaction
• Abstracts: Inelastic scattering of N2 from water ice. Numerical study of a fragile three-dimensional kinetically constrained model
• Abstracts: Effects of modification of protein nanospace structure and change of temperature on the femtosecond to picosecond fluorescence dynamics of photoactive yellow protein
• Abstracts: Site switching and surface restructuring induced by NO adsorption on Pt(110). Kinetic constraints in the phase transitions of chemisorbed carbon monoxide on Co{1010} at high coverages

This website is not affiliated with document authors or copyright owners. This page is provided for informational purposes only. Unintentional errors are possible.