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In this paper we present single heterojunction p-i-n GaAsSbN/GaAs solar cells grown by lowtemperature liquid-phase epitaxy (LPE)this is of interest as a component of multi-junction solar cell devices. The quaternary absorber layer was characterized by low excitation power photoluminescence to give the temperature dependence of the band gap. This conformed to

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Significant technical progress is currently ongoing in the field of energy harvesting technologies. This paper presents a study of both photovoltaic (PV) and thermo-electric energy harvesting techniques in the context of mobile phone applications. The paper includes performance analysis of a macro scale PV module and a thermo-electric generator (investigated under different conditions), together with a single diode electrical equivalent circuit model of the solar PV developed using MATLAB/Simulink. Additionally experimental results of the PV module are verified via simulation. To complete the study a PV module is integrated with a DC/DC adjustable converter and solar charge controller (3A CMTP02) to charge a smart mobile phone in order to assimilate charging capacity and feasibility of macro scale energy harvesting devices.

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