An ultra-fast organic two-terminal phototransistor with vertical topology

• Main Authors: Chen-Yang Tzou, 鄒振洋
• Other Authors: 陳永芳
• Format: Others
• Language: en_US
• Published: 2018
• Online Access: http://ndltd.ncl.edu.tw/handle/retx3p

碩士 === 國立臺灣大學 === 物理學研究所 === 106 === This study presents a novel concept of an organic two-terminal phototransistor structure. The transistor effect is realized by the functional integration of a resistive random access memory and an organic bulk heterojunction solar cell forming a tandem structure. The organic solar cell efficiently harvests photon energy and generates photocurrent, and the RRAM acts as a switchable resistor. Compared with conventional phototransistors, our new design possesses several intriguing features, including ultra-fast photoresponse time, controllable photocurrent, and all solution processes for the active layers. Most importantly, all the above features (i.e. photocurrent output and switching of RRAM state) are achieved with only two vertically sandwiched electrodes, which is beneficial for high speed optical communication, circuit miniaturization, and energy saving. In addition, its unique logical characteristics have a great potential to be implemented into optical communication with a wide variety of application.