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In this study the effect of dislocation density on the performance of InGaN based multi junction solar cell has been calculated analytically. It is found that dislocation density adversely affects the open circuit voltage, short circuit current density and conversion efficiency of a solar cell. Efficiency is found to be improved with the increase in the number of junction (24.4–43.56% for single-six...
This paper presents the matrix version of Non-equilibrium Green's function (NEGF) approach to model transport problems for 2D graphene conductor. Nearest neighbor tight binding model is used to find the dispersion relation and from that the tuning of band gap energy by controlling the width of graphene layer is observed. The device Hamiltonian and self-energy matrices are formed suitably to calculate...
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