Organic Semiconductivity and Photovoltaism: Concepts and applications

Abstract

<jats:p>This work has for the objective, the theoretical explanation of the semi-conduction mechanisms as well as the photovoltaism in molecular organic materials by the creation of excitons and the transfer of π electrons of a donor (P3HT) to an acceptor (PCBM). In focusing on the broad technological applications of the molecular optoelectronic phenomena, this will provide the capital importance of the molecular electronic as a scientific and technical revolution which extends from the energy, has medicine up to the areas confusing nanotechnology and quantum electronics.</jats:p>

Theoretical Aspect of Physical Phenomena in Inorganic Photovoltaic Cells. Electrical Modeling and Numerical Simulation

“…The study of the hope charge zone is based on the Nernst-Planck equations, the transport equations and the Poisson equation. [7] These equations allowed us to *Corresponding author:mohammedazza81@gmail.com establish the theoretical model on which the numerical simulation of the cell is based, using the Runge-Kutta algorithm derived from the finite difference method for solving the differential equations obtained. On the other hand, we proceeded to model the silicon-based inorganic photovoltaic cell by an equivalent circuit focusing on the generated photo-currents and their relationship with the densities of the donor and acceptor impurities, the wavelength, the open circuit potential and the luminous flux, In a second row, we have also approached the resistances equivalent to the series, source and shunt resistances by trying to elucidate with maximum clarity, the links between the structural properties of the material at the microscopic scale with the optical and electrical properties of the photovoltaic cell.…”