Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International

Wikipedia Affiliate Button

Home > Press > Future of portable electronics -- Novel organic semiconductor with exciting properties: Researchers synthesize a new substance that can potentially be adapted to form a semiconductor with wide applications in electronics

Abstract:
Semiconductors are substances that have a conductivity between that of conductors and insulators. Due to their unique properties of conducting current only in specific conditions, they can be controlled or modified to suit our needs. Nowhere is the application of semiconductors more extensive or important than in electrical and electronic devices, such as diodes, transistors, solar cells, and integrated circuits.

Future of portable electronics -- Novel organic semiconductor with exciting properties: Researchers synthesize a new substance that can potentially be adapted to form a semiconductor with wide applications in electronics

Tokyo, Japan | Posted on September 13th, 2019

Semiconductors can be made of either organic (carbon-based) or inorganic materials. Recent trends in research show that scientists are opting to develop more organic semiconductors, as they have some clear advantages over inorganic semiconductors. Now, scientists, led by Prof Makoto Tadokoro of the Tokyo University of Science, report on the synthesis of a novel organic substance with potential applications as an n-type semiconductor. This study is published in the journal Organic and Biomolecular Chemistry. According to Prof Makoto Tadokoro, "organic semiconductor devices, unlike hard inorganic semiconductor devices, are very soft and are useful for creating adhesive portable devices that can easily fit on a person." However, despite the advantages of organic semiconductors, there are very few known stable molecules that bear the physical properties of n-type semiconductors, compared to inorganic n-type semiconductors.

N-heteroheptacenequinone is a well-known potential candidate for n-type semiconductor materials. However, it has some drawbacks: it is unstable in air and UV-visible light, and it is insoluble in organic solvents. These disadvantages obstruct the practical applications of this substance as a semiconductor.

A team of Japanese scientists--Dr. Kyosuke Isoda (Faculty of Engineering and Design, Kagawa University; ex-Tokyo University of Science), Mr. Mitsuru Matsuzaka (ex-Tokyo University of Science), Dr. Tomoaki Sugaya (Chiba Institute of Technology, ex-Tokyo University of Science), and Prof Tadokoro--aimed to bridge this gap, and identified a novel substance called C6OAHCQ, derived from N-heteroheptacenequinone, that overcomes the drawbacks of N-heteroheptacenequinone.

To obtain this substance, N-heteroheptacenequinone was made to undergo four-step process of chemical reactions involving repetitive refluxing, evaporation, recrystallization, and heating. The final product achieved was C6OAHCQ, a red solid. C6OAHCQ has a unique crystalline near-planar structure involving two tetraazanaphthacene "backbones" and one benzoquinone backbone. It has eight electron-deficient imino-N atoms and two carbonyl moieties.

To confirm its electrochemical properties, C6OAHCQ was made to undergo a series of tests including a UV-visible absorption spectroscopy in the solution state, cyclic voltammetry, and theorical calculation of electrostatic potential. It was also compared with a tetraazapentacenequinone analog.

These tests revealed some unique properties of C6OAHCQ. The electron-deficient imino-N atoms and two carbonyl moieties in C6OAHCQ provide it with an electron-accepting behavior. In fact, the number of electrons accepted by C6OAHCQ is more than that by fullerene C60, which suggests improved conductivity. Cyclic voltammetry showed that C6OAHCQ exhibited reversible four-step, four-electron reduction waves, which indicated that C6OAHCQ is stable and has good electrostatic potential; the UV-visible spectroscopy also showed its stability in UV-visible light. C6OAHCQ also showed electrochromic properties, which enable its potential application in many specialized areas such as the development of smart windows, electrochromic mirrors, and electrochromic display devices. C6OAHCQ was also found to have excellent solubility in common organic solvents. It was overall found to be advantageous and had improved properties compared to the tetraazapentacenequinone analog.

The synthesis of organic C6OAHCQ is a new step forward in semiconductor research, due to its distinctive properties that distinguish it from existing organic semiconductors. C6OAHCQ is also a revolutionary step in the current research scenario dominated by inorganic semiconductors. Prof Tadokoro and team assert the importance of this novel substance, stating, "the identification of this organic acceptor molecular skeleton that has the property of stably receiving electrons is very important, as it can be used to develop molecular devices with new functionality. These devices are soft, unlike hard inorganic semiconductor devices, and can help to create portable devices."

####

For more information, please click here

Contacts:
Tsutomu Shimizu

Copyright © Tokyo University of Science

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 Links

Related News Press

News and information

Moving diagnostics out of the lab and into your hand: Electrochemical sensor platform technology could enable portable, multiplexed, point-of-care diagnostics for a wide range of applications November 11th, 2019

Arrowhead Pharmaceuticals to Webcast Fiscal 2019 Year End Results November 11th, 2019

Scientists probe the limits of ice: Transition between ice and liquid water gets fuzzy at the nanoscale November 9th, 2019

Arrowhead and Collaborator Janssen Present Phase 2 Clinical Data for Investigational Hepatitis B Regimens at The Liver Meeting® 2019 November 8th, 2019

Go with the flow: Scientists design new grid batteries for renewable energy: New blueprint for affordable, sustainable 'flow batteries' developed at Berkeley Lab could accelerate an electrical grid powered by the sun and wind November 8th, 2019

Chemistry

Scientists probe the limits of ice: Transition between ice and liquid water gets fuzzy at the nanoscale November 9th, 2019

Sponge-like 2D material with interesting electrical conductivity and magnetic properties: Researchers synthesize a new 2D Metal Organic Framework with an ever-growing list of possible applications October 31st, 2019

Visible light and nanoparticle catalysts produce desirable bioactive molecules: Simple photochemical method takes advantage of quantum mechanics October 31st, 2019

Bio-inspired nano-catalyst guides chiral reactions October 25th, 2019

Organic Electronics

Electrifying science: New study describes conduction through proteins November 1st, 2019

Researchers repurpose failed cancer drug into printable semiconductor October 3rd, 2019

Hardware

Do you Kyoto? World-leading companies share their approaches to environmentally friendly business at NAUM’19 October 14th, 2019

Stanford builds a heat shield just 10 atoms thick to protect electronic devices: Atomically thin heat shields could be up to 50,000 times thinner than current insulating materials in cell phones and laptops August 19th, 2019

Display technology/LEDs/SS Lighting/OLEDs

Product authentication at your fingertips: UC Riverside-led research brings rapid and reversible switching of plasmonic color to solids October 4th, 2019

CCNY physicists score double hit in LED research September 27th, 2019

Flexible Electronics

Borophene on silver grows freely into an atomic ‘skin’: Rice scientists lead effort to improve manufacture of valuable 2D material October 1st, 2019

New health monitors are flexible, transparent and graphene enabled September 13th, 2019

Possible Futures

Moving diagnostics out of the lab and into your hand: Electrochemical sensor platform technology could enable portable, multiplexed, point-of-care diagnostics for a wide range of applications November 11th, 2019

Arrowhead Pharmaceuticals to Webcast Fiscal 2019 Year End Results November 11th, 2019

Scientists probe the limits of ice: Transition between ice and liquid water gets fuzzy at the nanoscale November 9th, 2019

Self-assembled microspheres of silica to cool surfaces without energy consumption November 8th, 2019

Chip Technology

Electrifying science: New study describes conduction through proteins November 1st, 2019

Scientists tame Josephson vortices November 1st, 2019

Matching Investment Program (MIP) Leverages $140K Empire State Development/NYSTAR Funding to SUNY Poly’s CATN2 to Enable $1.5M in Matching Commitments from Industry Partners: Investment Funds Faculty Research Related to Advanced Materials, Genomics, and Semiconductor Reliability October 18th, 2019

Combination of Nanometrics and Rudolph Technologies to Create Onto Innovation October 16th, 2019

Discoveries

Moving diagnostics out of the lab and into your hand: Electrochemical sensor platform technology could enable portable, multiplexed, point-of-care diagnostics for a wide range of applications November 11th, 2019

Scientists probe the limits of ice: Transition between ice and liquid water gets fuzzy at the nanoscale November 9th, 2019

Thorium superconductivity: Scientists discover a new high-temperature superconductor November 8th, 2019

Self-assembled microspheres of silica to cool surfaces without energy consumption November 8th, 2019

Announcements

Moving diagnostics out of the lab and into your hand: Electrochemical sensor platform technology could enable portable, multiplexed, point-of-care diagnostics for a wide range of applications November 11th, 2019

Arrowhead Pharmaceuticals to Webcast Fiscal 2019 Year End Results November 11th, 2019

Scientists probe the limits of ice: Transition between ice and liquid water gets fuzzy at the nanoscale November 9th, 2019

A distinct spin on atomic transport: Work that demonstrates simultaneous control over transport and spin properties of cold atoms establishes a framework for exploring concepts of spintronics and solid-state physics November 8th, 2019

Interviews/Book Reviews/Essays/Reports/Podcasts/Journals/White papers/Posters

Moving diagnostics out of the lab and into your hand: Electrochemical sensor platform technology could enable portable, multiplexed, point-of-care diagnostics for a wide range of applications November 11th, 2019

Scientists probe the limits of ice: Transition between ice and liquid water gets fuzzy at the nanoscale November 9th, 2019

Self-assembled microspheres of silica to cool surfaces without energy consumption November 8th, 2019

Arrowhead and Collaborator Janssen Present Phase 2 Clinical Data for Investigational Hepatitis B Regimens at The Liver Meeting® 2019 November 8th, 2019

Energy

Go with the flow: Scientists design new grid batteries for renewable energy: New blueprint for affordable, sustainable 'flow batteries' developed at Berkeley Lab could accelerate an electrical grid powered by the sun and wind November 8th, 2019

Cage molecules act as molecular sieves for hydrogen isotope separation November 1st, 2019

New technique lets researchers map strain in next-gen solar cells November 1st, 2019

Promising discovery could lead to a better, cheaper solar cell: Scientific instrument made at McGill reveals liquid-like properties of a solid substance November 1st, 2019

Solar/Photovoltaic

Self-assembled microspheres of silica to cool surfaces without energy consumption November 8th, 2019

Go with the flow: Scientists design new grid batteries for renewable energy: New blueprint for affordable, sustainable 'flow batteries' developed at Berkeley Lab could accelerate an electrical grid powered by the sun and wind November 8th, 2019

New technique lets researchers map strain in next-gen solar cells November 1st, 2019

Promising discovery could lead to a better, cheaper solar cell: Scientific instrument made at McGill reveals liquid-like properties of a solid substance November 1st, 2019

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



  Premium Products
NanoNews-Custom
Only the news you want to read!
 Learn More
NanoStrategies
Full-service, expert consulting
 Learn More











ASP
Nanotechnology Now Featured Books




NNN

The Hunger Project