Nanotechnology Now

Our NanoNews Digest Sponsors
Heifer International



Home > Press > Single-Crystal, Organic Nanowire High-Performance Phototransistors

Abstract:
The development of organic phototransistors (OPTs) based on single-crystalline n-channel nanowires (NWs) that are in turn based on organic semiconductors is highly desirable for bottom-up fabrication of complementary photoelectronic circuits, providing high operational stability, easy control of photoswitching voltages, a high photosensitivity, and good responsivity. To date, however, the literature has focused on thin-film OPTs, and single-crystalline NW OPTs have received much less attention.

Single-Crystal, Organic Nanowire High-Performance Phototransistors

Germany | Posted on October 18th, 2012

Prof. Joon Hak Oh and Hojeong Yu, working at UNIST in Ulsan, South Korea, together with Zhenan Bao at Stanford University, USA, have worked on organic single-crystalline NW OPTs fabricated using N,N'-bis(2-phenylethyl)-perylene-3,4:9,10-tetracarboxylic diimide, which is an example of a high-performance n-channel organic semiconductor, as the photoactive layer.

The researchers observed a highly sensitive and reproducible photoresponse from their NW OPTs and made quantitative investigations into the photogenerated charge-carrier behavior. There was a significant enhancement in the charge-carrier mobility upon light irradiation, as compared with the charge-carrier mobility in the dark, and the mobility was enhanced at a higher incident power density, as well as being dependent on the wavelength of the incident light. The external quantum efficiency of the NW OPT devices was much higher than that of thin-film OPTs, attributed to the defect-free single-crystalline nature of the nanowires.

The findings highlight organic single-crystalline NW-OPTs as an alternative to conventional thin-film-type photodiodes, and could help towards optoelectronic device miniaturization.

####

For more information, please click here

Copyright © Wiley-VCH Materials Science Journals

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

Link to the original paper on Wiley Online Library:

Related News Press

News and information

Virginia Tech physicists propose path to faster, more flexible robots: Virginia Tech physicists revealed a microscopic phenomenon that could greatly improve the performance of soft devices, such as agile flexible robots or microscopic capsules for drug delivery May 17th, 2024

Gene therapy relieves back pain, repairs damaged disc in mice: Study suggests nanocarriers loaded with DNA could replace opioids May 17th, 2024

Shedding light on perovskite hydrides using a new deposition technique: Researchers develop a methodology to grow single-crystal perovskite hydrides, enabling accurate hydride conductivity measurements May 17th, 2024

Oscillating paramagnetic Meissner effect and Berezinskii-Kosterlitz-Thouless transition in cuprate superconductor May 17th, 2024

Thin films

Utilizing palladium for addressing contact issues of buried oxide thin film transistors April 5th, 2024

Understanding the mechanism of non-uniform formation of diamond film on tools: Paving the way to a dry process with less environmental impact March 24th, 2023

New study introduces the best graphite films: The work by Distinguished Professor Feng Ding at UNIST has been published in the October 2022 issue of Nature Nanotechnology November 4th, 2022

Thin-film, high-frequency antenna array offers new flexibility for wireless communications November 5th, 2021

Chip Technology

Diamond glitter: A play of colors with artificial DNA crystals May 17th, 2024

Oscillating paramagnetic Meissner effect and Berezinskii-Kosterlitz-Thouless transition in cuprate superconductor May 17th, 2024

Discovery points path to flash-like memory for storing qubits: Rice find could hasten development of nonvolatile quantum memory April 5th, 2024

Utilizing palladium for addressing contact issues of buried oxide thin film transistors April 5th, 2024

Optical computing/Photonic computing

Aston University researcher receives 1 million grant to revolutionize miniature optical devices May 17th, 2024

With VECSELs towards the quantum internet Fraunhofer: IAF achieves record output power with VECSEL for quantum frequency converters April 5th, 2024

Chemical reactions can scramble quantum information as well as black holes April 5th, 2024

Optically trapped quantum droplets of light can bind together to form macroscopic complexes March 8th, 2024

Discoveries

Virginia Tech physicists propose path to faster, more flexible robots: Virginia Tech physicists revealed a microscopic phenomenon that could greatly improve the performance of soft devices, such as agile flexible robots or microscopic capsules for drug delivery May 17th, 2024

Diamond glitter: A play of colors with artificial DNA crystals May 17th, 2024

Finding quantum order in chaos May 17th, 2024

Advances in priming B cell immunity against HIV pave the way to future HIV vaccines, shows quartet of new studies May 17th, 2024

Announcements

Virginia Tech physicists propose path to faster, more flexible robots: Virginia Tech physicists revealed a microscopic phenomenon that could greatly improve the performance of soft devices, such as agile flexible robots or microscopic capsules for drug delivery May 17th, 2024

Diamond glitter: A play of colors with artificial DNA crystals May 17th, 2024

Finding quantum order in chaos May 17th, 2024

Oscillating paramagnetic Meissner effect and Berezinskii-Kosterlitz-Thouless transition in cuprate superconductor May 17th, 2024

Photonics/Optics/Lasers

Aston University researcher receives 1 million grant to revolutionize miniature optical devices May 17th, 2024

With VECSELs towards the quantum internet Fraunhofer: IAF achieves record output power with VECSEL for quantum frequency converters April 5th, 2024

Nanoscale CL thermometry with lanthanide-doped heavy-metal oxide in TEM March 8th, 2024

Optically trapped quantum droplets of light can bind together to form macroscopic complexes March 8th, 2024

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