Numerical simulation of Ge solar cells using D-AMPS-1D code

Abstract

ARTICLE INFO ABSTRACTA solar cell is a solid state device that converts the energy of sunlight directly into electricity by the Keywordsphotovoltaic effect. When light with photon energies greater than the band gap is absorbed by a Solar cells semiconductor material, free electrons and free holes are generated by optical excitation in the Germanium material. The main characteristic of a photovoltaic device is the presence of internal electric field able to Numerical simulation separate the free electrons and holes so they can pass out of the material to the external circuit before they recombine. Numerical simulation of photovoltaic devices plays a crucial role in their design, performance prediction, and comprehension of the fundamental phenomena ruling their operation. The electrical transport and the optical behavior of the solar cells discussed in this work were studied with the simulation code D-AMPS-ID. This software is an updated version of the one-dimensional (ID) simulation program Analysis of Microelectronic and Photonic Devices (AMPS) that was initially developed at The Penn State University, USA. Structures such as homojunctions, heterojunctions, multijunctions, etc., resulting from stacking layers of different materials can be studied by appropriately selecting characteristic parameters. In this work, examples of cells simulation made with D-AMPS-1D are shown. Particularly, results of Ge photovoltaic devices are presented. The role of the InGaP buffer on the device was studied. Moreover, a comparison of the simulated electrical parameters with experimental results was performed.

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