KOUTSOURAKIS, G. ...et al., 2017. A simple optical setup for current mapping of small area PV devices using different sampling strategies. Presented at the 13th Photovoltaic Science, Application and Technology Conference, (PVSAT-13), Bangor University, 5-7th April.
An optical setup for current mapping of
photovoltaic devices is presented. It is
based on a digital micro-mirror device
(DMD) and a small number of additional
optical elements making the implementation simple and cost effective. The specific properties of the DMD chip enable the application of two different sampling methods; point by point sampling and compressive sampling. Both sampling strategies are compared and cases when each one of them performs better are investigated. It is shown that compressive sampling can significantly enhance weak current signals and provide current maps in the cases when the point by point current signal is below the noise threshold.
This is a conference paper.
This work was funded by the CASE awards
of EPSRC and through the European
Metrology Research Programme (EMRP)
Project ENG55 PhotoClass, which is jointly
funded by the EMRP participating countries
within EURAMET and the European Union.