Transparent Junctionless Electric-Double-Layer Transistors Gated by a Reinforced Chitosan-Based Biopolymer Electrolyte

Transparent junctionless organic-inorganic hybrid electric-double-layer thin-film transistors are demonstrated using a reinforced solution-processed chitosan-based biopolymer electrolyte as a dielectric layer. The specific feature of such device is that the channel and source/drain electrodes are realized using a thin indium tin oxide (ITO) film without any source/drain junction. A SiO2 film (~5 nm)/chitosan organic-inorganic hybrid bilayer dielectric is found to be an efficient way to improve the stability and performance of the devices. Our results indicate that the transistor gated by organic-inorganic hybrid bilayer dielectric with a thin ITO channel (~10 nm) exhibited a better performance with a lower subthreshold swing (84 mV/dec), a larger ON/OFF ratio (5.5×107), and a smaller bias-stressing threshold voltage shift (ΔVth=0.13 V) . A physical model based on energy diagram with 1-D Poisson equation is proposed to interpret the operating mechanism. These results clearly show that the proposed architecture can provide a new opportunity for the next-generation low-voltage low-cost device design.

[1]  Chi-Woo Lee,et al.  Reduced electric field in junctionless transistors , 2010 .

[2]  A. Facchetti.  Dielectric materials: gels excel. , 2008, Nature materials.

[3]  Jun Li,et al.  High performance ZnO-thin-film transistor with Ta2O5 dielectrics fabricated at room temperature , 2009 .

[4]  Yeon-Gon Mo,et al.  High performance thin film transistors with cosputtered amorphous indium gallium zinc oxide channel , 2007 .

[5]  Kazuhito Tsukagoshi,et al.  High-density electrostatic carrier doping in organic single-crystal transistors with polymer gel electrolyte , 2006 .

[6]  X. Crispin,et al.  Ultra-low voltage air-stable polyelectrolyte gated n-type organic thin film transistors , 2011 .

[7]  Chao Zhong,et al.  A polysaccharide bioprotonic field-effect transistor. , 2011, Nature communications.

[8]  Sung-Jin Choi,et al.  Nonvolatile Memory by All-Around-Gate Junctionless Transistor Composed of Silicon Nanowire on Bulk Substrate , 2011, IEEE Electron Device Letters.

[9]  Tobin J Marks,et al.  Low-voltage organic field-effect transistors and inverters enabled by ultrathin cross-linked polymers as gate dielectrics. , 2005, Journal of the American Chemical Society.

[10]  Shimpei Ono,et al.  A comparative study of organic single-crystal transistors gated with various ionic-liquid electrolytes , 2009 .

[11]  Jia Sun,et al.  Low-Voltage Organic/Inorganic Hybrid Transparent Thin-Film Transistors Gated by Chitosan-Based Proton Conductors , 2011, IEEE Electron Device Letters.

[12]  Göran Gustafsson,et al.  Low‐Voltage Polymer Field‐Effect Transistors Gated via a Proton Conductor , 2007 .

[13]  Timothy P. Lodge,et al.  Ion Gel-Gated Polymer Thin-Film Transistors: Operating Mechanism and Characterization of Gate Dielectric Capacitance, Switching Speed, and Stability , 2009 .

[14]  A. Facchetti,et al.  Solution-deposited organic-inorganic hybrid multilayer gate dielectrics. Design, synthesis, microstructures, and electrical properties with thin-film transistors. , 2011, Journal of the American Chemical Society.

[15]  M. Ratner,et al.  High-capacitance organic nanodielectrics: effective medium models of their response. , 2006, The journal of physical chemistry. B.

[16]  Adrian M Ionescu,et al.  Nanowire transistors made easy. , 2010, Nature nanotechnology.

[17]  Jia Sun,et al.  Ultralow-voltage transparent electric-double-layer thin-film transistors processed at room-temperature , 2009 .

[18]  W. Xie,et al.  Ultralow contact resistance in electrolyte-gated organic thin film transistors , 2010 .

[19]  X. Crispin,et al.  Insulator Polarization Mechanisms in Polyelectrolyte‐Gated Organic Field‐Effect Transistors , 2009 .

[20]  Wei Zhang,et al.  Printed, sub-3V digital circuits on plastic from aqueous carbon nanotube inks. , 2010, ACS nano.

[21]  Jia Sun,et al.  Junctionless Flexible Oxide-Based Thin-Film Transistors on Paper Substrates , 2012, IEEE Electron Device Letters.

[22]  Chao Zhong,et al.  A Chitin Nanofiber Ink for Airbrushing, Replica Molding, and Microcontact Printing of Self‐assembled Macro‐, Micro‐, and Nanostructures , 2011, Advanced materials.

[23]  S. Ganguly,et al.  Bulk Planar Junctionless Transistor (BPJLT): An Attractive Device Alternative for Scaling , 2011, IEEE Electron Device Letters.

[24]  Jia Sun,et al.  Self-Assembled In-Plane Gate Oxide-Based Homojunction Thin-Film Transistors , 2011, IEEE Electron Device Letters.

[25]  Chi-Woo Lee,et al.  Nanowire transistors without junctions. , 2010, Nature nanotechnology.

[26]  A. Gandini,et al.  Novel materials based on chitosan and cellulose , 2011 .

[27]  S. Seki,et al.  Electronic functionalization of solid-to-liquid interfaces between organic semiconductors and ionic liquids: Realization of very high performance organic single-crystal transistors , 2008 .

[28]  Gun Hee Kim,et al.  High Electrical Performance of Wet-Processed Indium Zinc Oxide Thin-Film Transistors , 2010, IEEE Electron Device Letters.

[29]  C. Frisbie,et al.  Polymer electrolyte-gated organic field-effect transistors: low-voltage, high-current switches for organic electronics and testbeds for probing electrical transport at high charge carrier density. , 2007, Journal of the American Chemical Society.

[30]  R. B. Tahar,et al.  Tin doped indium oxide thin films: Electrical properties , 1998 .

[31]  Dong Lim Kim,et al.  Density-of-States Modeling of Solution-Processed InGaZnO Thin-Film Transistors , 2010, IEEE Electron Device Letters.

[32]  E. Fortunato,et al.  Role of order and disorder on the electronic performances of oxide semiconductor thin film transistors , 2007 .

[33]  Horng-Chih Lin,et al.  Gate-All-Around Junctionless Transistors With Heavily Doped Polysilicon Nanowire Channels , 2011, IEEE Electron Device Letters.

[34]  Jiyoul Lee,et al.  Printable ion-gel gate dielectrics for low-voltage polymer thin-film transistors on plastic. , 2008, Nature materials.

[35]  Tobin J Marks,et al.  Flexible low-voltage organic thin-film transistors enabled by low-temperature, ambient solution-processable inorganic/organic hybrid gate dielectrics. , 2010, Journal of the American Chemical Society.

[36]  Yongkee Hwang,et al.  Competitive device performance of low-temperature and all-solution-processed metal-oxide thin-film transistors , 2011 .

[37]  C. Pacheco,et al.  Preparation and modification of chitosan particles for Rhizomucor miehei lipase immobilization , 2011 .

[38]  Qing Wan,et al.  Low-voltage SnO₂ nanowire transistors gated by solution-processed chitosan-based proton conductors. , 2012, Nanoscale.

[39]  Horng-Chih Lin,et al.  Characteristics of n-Type Junctionless Poly-Si Thin-Film Transistors With an Ultrathin Channel , 2012, IEEE Electron Device Letters.