Efficiency enhancement and polarization detection capability of photodiode by accumulating local electric field on the metal electrodes

By chiral-shape patterns over finger-type electrodes of conventional photodiode, for the first time, record high >;80% external quantum efficiency (EQE) and polarization detection capability are successfully achieved simultaneously through the self-accumulated local electric field due to strong local surface plasmon resonance (LSPR). Device has expected high efficiency to absorb the incident visible energy profiting the visible applications potentially, such as artificial eyes. Extraordinary transmission phenomenon can be well examined indepth by both theoretical and experimental results discussed in this work.