Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

Home > Press > Imec and Holst Centre develop low-temperature organic-inorganic complementary thin-film technology

Complementary TFT: (a) Output characteristics of typical solution-processed oxide and evaporated pentacene transistors, (b) inverter characteristics of the hybrid technology at different power voltages. The inset shows a photograph of an inverter. (c) Cross section of the hybrid technology.
Complementary TFT: (a) Output characteristics of typical solution-processed oxide and evaporated pentacene transistors, (b) inverter characteristics of the hybrid technology at different power voltages. The inset shows a photograph of an inverter. (c) Cross section of the hybrid technology.

Abstract:
Imec and Holst Centre report the fabrication of high-performance solution-processed n-type metal-oxide thin-film transistors (TFTs) after post-annealing at temperatures as low as 250°C. Using these oxide n-TFTs in combination with pentacene p-TFTs, a completely scalable integration process is developed for hybrid inorganic-organic complementary logic on foil. A bidirectional RFID circuit, recently presented at ISSCC, proves the ability of the technology to realize complex, fast and low-voltage circuitry.

Imec and Holst Centre develop low-temperature organic-inorganic complementary thin-film technology

Leuven, Belgium | Posted on March 16th, 2012

The development of a thin-film equivalent for Si CMOS circuitry is one of the key objectives of thin-film electronics. Combining n-channel transistors and p-channel transistors in a CMOS architecture allows low static power dissipation, simplified and more robust circuit design and low noise. A very promising approach to realize complementary thin-film logic is to integrate oxide n-TFTs with organic p-TFTs. The preferred technique to make n-type metal-oxide TFTs is solution-based processing, allowing a simple and high-throughput fabrication process. However, solution processing of metal oxides is typically done at high temperatures (350-500°C), making the technique incompatible with flexible substrates such as polyimide.

Imec and Holst Centre have now demonstrated high-performance solution-based n-type metal oxide TFTs processed directly on polyimide foil and annealed at 250°C. The n-type indium-based oxide transistors were photolithographically fabricated in a bottom Au gate - top Ti S/D contact geometry with channel lengths down to 2-10μm and 100nm of high-k Al2O3 acting as the gate dielectric. The oxide active layer is deposited by spin-coating and subsequently baked in air at a temperature as low as 250°C. Excellent transistor performances have been achieved on polyimide foil with saturation mobilities exceeding 2cm²/Vs, leakage currents below 1pA and Ion/Ioff ratios up to 108. This solution-based unipolar oxide TFT technology is well suited for application in e.g. active-matrix organic light-emitting diode (AMOLED) backplanes.

In a next step, a hybrid organic-inorganic complementary technology has been developed that combines the high-performance n-TFT with a thermally evaporated pentacene p-TFT. The latter has a mobility of up to 1cm2/Vs. A gold layer acts as the gate for both the organic p- and inorganic n-TFT, high-k Al2O3 is used to form the dielectric layer. First, the complementary TFT technology was implemented on a rigid substrate. Using this technology, hybrid complementary circuit building blocks, such as inverters and ring oscillators were realized. Supply voltages as low as 2V resulted in good circuit behavior, indicating that the presented technology is suited for future low-voltage applications. This complementary TFT technology enabled to make the world's first RFID circuit (using TFTs) that allows reader-talks-first communication, as recently presented at ISSCC 2012.

####

For more information, please click here

Contacts:
Barbara Kalkis
Maestro Marketing & PR

Copyright © IMEC

If you have a comment, please Contact us.

Issuers of news releases, not 7th Wave, Inc. or Nanotechnology Now, are solely responsible for the accuracy of the content.

Bookmark:
Delicious Digg Newsvine Google Yahoo Reddit Magnoliacom Furl Facebook

Related News Press

News and information

Protein Building Blocks for Nanosystems: Scientists develop method for producing bio-based materials with new properties April 17th, 2015

Oxford Instruments commissions high field outsert magnet system for the National High Magnetic Field Laboratory 32 Tesla magnet program April 17th, 2015

QD Vision Expands Product Line with Two-Millimeter Color LCD Display Optic: Color IQ™ Optic Enables Full-Color Gamut for Ultra-Thin Displays and All-in-One Computers April 16th, 2015

The National Science Foundation names engineering researcher Andrea Alú its Alan T. Waterman awardee for 2015: Alú is a pioneer in the field of metamaterials who has developed "cloaking" technology to make objects invisible to sensors April 16th, 2015

Thin films

Cobalt film a clean-fuel find: Rice University discovery is efficient, robust at drawing hydrogen and oxygen from water April 15th, 2015

The microscopic topography of ink on paper: Researchers have analyzed the varying thickness of printed toner in unprecedented 3-D detail, yielding insights that could lead to higher quality, less expensive and more environmentally-friendly glossy and non-glossy papers April 14th, 2015

New understanding of electromagnetism could enable 'antennas on a chip' April 9th, 2015

LAMDAMAP 2015 hosted by the University March 26th, 2015

Chip Technology

Nanotubes with two walls have singular qualities: Rice University lab calculates unique electronic qualities of double-walled carbon nanotubes April 16th, 2015

Graphenea embarks on a new era April 16th, 2015

Quantization of 'surface Dirac states' could lead to exotic applications April 15th, 2015

Study shows novel pattern of electrical charge movement through DNA April 14th, 2015

Discoveries

Protein Building Blocks for Nanosystems: Scientists develop method for producing bio-based materials with new properties April 17th, 2015

Major advance in artificial photosynthesis poses win/win for the environment: Berkeley Lab researchers perform solar-powered green chemistry with captured CO2 April 16th, 2015

Newly-Developed Nanocatalysts Increase Performance of Fuel Cells April 16th, 2015

Lanthanide-Organic Framework Nanothermometers Prepared by Spray-Drying April 16th, 2015

Announcements

Protein Building Blocks for Nanosystems: Scientists develop method for producing bio-based materials with new properties April 17th, 2015

Oxford Instruments commissions high field outsert magnet system for the National High Magnetic Field Laboratory 32 Tesla magnet program April 17th, 2015

Newly-Developed Nanocatalysts Increase Performance of Fuel Cells April 16th, 2015

Lanthanide-Organic Framework Nanothermometers Prepared by Spray-Drying April 16th, 2015

Alliances/Partnerships/Distributorships

How can you see an atom? (video) April 10th, 2015

FibeRio and VF Corporation Form Strategic Partnership to Lead the Apparel and Footwear Markets in Nanofiber Technology April 8th, 2015

UK National Graphene Institute Selects Bruker as Official Partner: World-Leading Graphene Research Facility Purchases Multiple Bruker AFMs April 7th, 2015

NXP and GLOBALFOUNDRIES Announce Production of 40nm Embedded Non-Volatile Memory Technology: Co-developed technology to leverage GLOBALFOUNDRIES 40nm process technology platform March 24th, 2015

RFID

Harvesting energy from electromagnetic waves: In the future, clean alternatives such as harvesting energy from electromagnetic waves may help ease the world's energy shortage April 15th, 2015

LogiTag’s Active RTLS Solution Selected by Hebrew University Nano Labs to Safeguards and Monitor Students and Staff May 13th, 2014

Leti and Partners in SOCRATE Project Focusing on Miniature Antennas with Super-Directivity Radiation Properties: Improving Directivity of Small Antennas Would Enhance Spectral Efficiency, Reduce Environmental Impact and Increase Functionality July 15th, 2013

IDTechEx launches online Market Intelligence Portal May 23rd, 2013

NanoNews-Digest
The latest news from around the world, FREE




  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoTech-Transfer
University Technology Transfer & Patents
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More










ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project







© Copyright 1999-2015 7th Wave, Inc. All Rights Reserved PRIVACY POLICY :: CONTACT US :: STATS :: SITE MAP :: ADVERTISE