title: Stable low-voltage operation top-gate organic field-effect transistors on cellulose nanocrystal substrates.
abstract: We report on the performance and the characterization of top-gate organic field-effect transistors (OFETs), comprising a bilayer gate dielectric of CYTOP/Al2O3 and a solution-processed semiconductor layer made of a blend of TIPS-pentacene:PTAA, fabricated on recyclable cellulose nanocrystal-glycerol (CNC/glycerol) substrates. These OFETs exhibit low operating voltage, low threshold voltage, an average field-effect mobility of 0.11 cm(2)/(V s), and good shelf and operational stability in ambient conditions. To improve the operational stability in ambient a passivation layer of Al2O3 is grown by atomic layer deposition (ALD) directly onto the CNC/glycerol substrates. This layer protects the organic semiconductor layer from moisture and other chemicals that can either permeate through or diffuse out of the substrate.
authors: Center for Organic Photonics and Electronics (COPE), School of Electrical and Computer Engineering, Georgia Institute of Technology , Atlanta, Georgia 30332, United States.
authors: Cheng-Yin
authors: CY
authors: Wang
authors: Canek
authors: C
authors: Fuentes-Hernandez
authors: Jen-Chieh
authors: JC
authors: Liu
authors: Amir
authors: A
authors: Dindar
authors: Sangmoo
authors: S
authors: Choi
authors: Jeffrey P
authors: JP
authors: Youngblood
authors: Robert J
authors: RJ
authors: Moon
authors: Bernard
authors: B
authors: Kippelen
keywords: ambient stability; cellulose; low-voltage; organic field-effect transistor; top-gate geometry