Title :
High gain current readout method for MWCNT infrared sensor
Author :
Chen, Liangliang ; Xi, Ning ; Chen, Hongzhi ; Lai, King Wai Chiu
Author_Institution :
Dept. of Electr. & Comput. Eng., Michigan State Univ., East Lansing, MI, USA
Abstract :
Infrared(IR) sensor was widely used in industrial, scientific and medical area. The currently IR sensors in IR camera are mostly temperature dependent, so that a cryogenic cooled system needed to maintain IR imaging system work.In nano material, carbon nanotue (CNT) based IR sensor has good performance in room temperature. However, the photocurrent in CNT IR sensor is especially small within range of nano ampere. In this paper, a high gain current to current converter was designed to read nano scale photocurrent in carbon nanotube based IR sensor. The results show that the proposed method can make the current response reach to 1uA, and make CNT based IR sensor available in infrared imaging system.
Keywords :
cameras; carbon nanotubes; cryogenics; infrared detectors; infrared imaging; IR camera; IR imaging system; IR sensors; MWCNT infrared sensor; carbon nanotube; cryogenic cooled system; high gain current readout method; industrial area; infrared imaging system; medical area; nano material; nano scale photocurrent; scientific area; temperature 293 K to 298 K; temperature dependent; Gallium arsenide; Indium tin oxide; Iron; Laser modes; Infrared sensor; bipolar junction transistor; carbon nanotue; readout system;
Conference_Titel :
Nanotechnology (IEEE-NANO), 2012 12th IEEE Conference on
Conference_Location :
Birmingham
Print_ISBN :
978-1-4673-2198-3
DOI :
10.1109/NANO.2012.6322158
