Fast Response Time and High Detectivity In Vertical Organic Phototransistor Based On Permeable Base Electrode
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Vertical organic 3-terminal photonic transistors (VOPTs) operate with low dark current, short response time, and a large amplifying current of photonic carrier. The novel VOPT architecture based on organic permeable base transistors (OPBTs) vertically forms conducting channel in the nanometer scale by using permeable base electrode, thus can achieve a large amplifying current and high switching speed. VOPTs based on OPBT. In this study, The permeable base electrode pinhole morphologies such as density or size were controlled by the electrodes thickness and deposition rate speed. Vertical transistor with permeable base electrode achieves low dark current, high current density and high switching speed. As a result, the response time and detectivity are significantly improved in VOPTs based on OPBT compared to the organic 2-terminal photodiode or the organic phototransistor with lateral channel.