Dual Gate Black Phosphorus Field Effect Transistors on Glass for NOR Logic and Organic Light Emitting Diode Switching

Title
Dual Gate Black Phosphorus Field Effect Transistors on Glass for NOR Logic and Organic Light Emitting Diode Switching
Authors
김진성전표진이준영최경희이희성조영석이영택황도경임성일
Keywords
Black phosphorus; dual-gate FET; OLED switching; NOR logic; inverter
Issue Date
2015-09
Publisher
Nano letters
Citation
VOL 15, NO 9, 5778-5783
Abstract
We have fabricated dual gate field effect transistors (FETs) with 12 nm-thin black phosphorus (BP) channel on glass substrate, where our BP FETs have a patterned-gate architecture with 30 nm-thick Al2O3 dielectrics on top and bottom of a BP channel. Top gate dielectric has simultaneously been used as device encapsulation layer, controlling the threshold voltage of FETs as well when FETs mainly operate under bottom gate bias. Bottom, top, and dual gate-controlling mobilities were estimated to be 277, 92, and 213 cm2/V s, respectively. Maximum ON-current was measured to be ∼5 μA at a drain voltage of −0.1 V but to be as high as ∼50 μA at −1 V, while ON/OFF current ratio appeared to be 3.6 × 103 V. As a result, our dual gate BP FETs demonstrate organic light emitting diode (OLED) switching for green and blue OLEDs, also demonstrating NOR logic functions by separately using top- and bottom-input.
URI
http://pubs.kist.re.kr/handle/201004/50254
ISSN
15306984
Appears in Collections:
KIST Publication > Article
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