Current density versus potential characteristics of dye-sensitized nanostructured semiconductor photoelectrodes. 2. simulations

Article Abstract:

A series of simulations provides an insight into the operational characteristics and factors that affect the performance of dye-sensitized nanocrystalline semiconductor-based photochemical cells. The model and simulations offer a method for evaluating where a specific system of interest lies in performance space and what dynamic and thermodynamic factors ought to be manipulated to have maximal effect on improving the efficiency of the resulting photoelectrochemical energy conversion system.

Nanotechnology, Simulation methods, Simulation

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Cyclic voltammetry of semiconductor photoelectrodes III: a comparison of experiment and theory for n-Si and p-Si electrodes

Article Abstract:

Cyclic voltammetry (CV) experiments on a freely diffusing electroactive species at a semiconductor electrode were performed. In addition, the kinetics of a diode in a series with a metal electrode/electrolyte redox couple was also examined. The CV of the diode/electrode circuit was similar to the kinetics of a semiconducting photoelectrode's contact with an outer-sphere redox couple. Moreover, a congruence in the simulated and empirical data were demonstrated.

Semiconductors, Electrodes, Electrochemical analysis

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Current density versus potential characteristics of dye-sensitized nanostructured semiconductor photoelectrodes. 1. analytical expressions

Article Abstract:

An analytical model describing the operation of dye-sensitized nanocrystalline semiconductor photoelectrodes is developed. The system of differential equations, subject to the specified boundary conditions, represents a closed-form mathematical description of the charge-carrier flow in the system.

Dynamics, Dynamics (Mechanics), Properties, Photoelectrons

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