Modelling of ideal AlGaAs quantum well solar cells

Quantum and conversion efficiency calculation of AlGaAs/GaAs multiple quantum well solar cells

“…The model reported in reference [4] is shortly presented below. A AlGaAs/GaAs QWSC with N W wells each of length L W in the intrinsic region of length W with barrier band gap E gB and well band gap E gW is studied.…”

“…However, Barnham et al [3] reported experimental results showing enhancement in the MQWSC efficiency and they argued that their observations support that the assumption made by Araujo and Marti (spatially constant quasi Fermi level), is not applicable to the solar cells under no radiative recombination dominance. In order to contribute to clear up this controversy we extended a theoretical ideal model reported in reference [4] which shows that the insertion of multiquantum wells into the depletion region of a p-i (MQW)-n Al x Ga 1-x As/GaAs solar cell can enhance the conversion efficiency. The quantum efficiency for AlGaAs/GaAs QWSC has been calculated and compared with available data from the group at Imperial College London.…”

High efficiency In<inf>x</inf>Ga<inf>1&#x2212;x</inf>N-based quantum well solar cell

“…In the present structure emitter is considered as n and base as p, i.e., n on p. The p and n regions are uniform and symmetrically doped. Under these conditions, the current voltage relation used in the analysis is given by [5] …”

Computational Intelligence Optimization Method for AlGaAs/GaAs Quantum Well Solar Cells

“…Lade also suggested a new approach to calculate Ȗ DOS (2) in equation [3]. Ȗ DOS , as mentioned before, is defined as the ratio between the effective quantum well and the barrier density of states, where an abrupt change from a 2D to a 3D density of states is assumed when the energy reaches the bottom of the barrier conduction band.…”

“…He considered the energy levels of the GaAs quantum wells to be continuous, neglecting the energy quantization, therefore, implying that any photon of energy above the GaAs gap is absorbed. In 2001, Rimada introduced some modifications in Anderson's model (3). He not only considered the quantum well energy quantization but also included the barrier/well interface recombination in his calculations.…”