Significant enhancement of infrared photodetector sensitivity using a semiconducting single-walled carbon nanotube/C60 phototransistor.

Park, Steve; Kim, Soo Jin; Nam, Ji Hyun; Pitner, Gregory; Lee, Tae Hoon; Ayzner, Alexander L; Wang, Huiliang; Fong, Scott W et al. · Adv Mater · 2015

basic_science · Level V

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Abstract

A highly sensitive single-walled carbon nanotube/C60 -based infrared photo-transistor is fabricated with a responsivity of 97.5 A W(-1) and detectivity of 1.17 × 10(9) Jones at 1 kHz under a source/drain bias of -0.5 V. The much improved performance is enabled by this unique device architecture that enables a high photoconductive gain of ≈10(4) with a response time of several milliseconds.