Solar energy is an important energy because it provides a clean energy with infinite amount. Solar cells are devices provide electrical energy converting from solar energy. There are many types of solar cells such as silicon solar cells, thin film solar cells, quantum dot solar cells (QD), organic photovoltaic (OPV) and emerging solar cells etc.
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The resolution of far-field imaging system is limited by the diffraction of light. The diffraction-limited resolution, firstly studied by Ernst Abbe [1] and Lord Rayleigh [2,3], can be quantitatively described by the shortest resolvable distance between two points, r, which is given by
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