Nanotechnology Now







Heifer International

Wikipedia Affiliate Button


DHgate

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

Thin films

Electronic circuits with reconfigurable pathways closer to reality January 26th, 2015

News and information

Nanoparticles Increase Durability of Concrete Decorations in Cold Areas January 26th, 2015

Iranian Researchers Boost Solar Cells Efficiency Using Anti-Aggregates January 26th, 2015

Detection of Heavy Metals in Samples with Naked Eye January 26th, 2015

Engineering self-assembling amyloid fibers January 26th, 2015

Chip Technology

Electronic circuits with reconfigurable pathways closer to reality January 26th, 2015

The latest fashion: Graphene edges can be tailor-made: Rice University theory shows it should be possible to tune material's properties January 24th, 2015

New method to generate arbitrary optical pulses January 21st, 2015

New signal amplification process set to transform communications, imaging, computing: UC San Diego researchers discover a mechanism to amplify signals in optoelectronic systems that is far more efficient than standard processes January 21st, 2015

Optical computing/ Photonic computing

New signal amplification process set to transform communications, imaging, computing: UC San Diego researchers discover a mechanism to amplify signals in optoelectronic systems that is far more efficient than standard processes January 21st, 2015

Rice's Naomi Halas to direct Smalley Institute: Optics pioneer will lead Rice's multidisciplinary science institute January 15th, 2015

Graphene plasmons go ballistic: Graphene combined with the insulting power of boron nitride enables light control in tiny circuits with dramatically reduced energy loss January 12th, 2015

High photosensitivity 2D-few-layered molybdenum diselenide phototransistors December 8th, 2014

Discoveries

Visualizing interacting electrons in a molecule: Scientists at Aalto University and the University of Zurich have succeeded in directly imaging how electrons interact within a single molecule January 26th, 2015

Electronic circuits with reconfigurable pathways closer to reality January 26th, 2015

Nanoparticles Increase Durability of Concrete Decorations in Cold Areas January 26th, 2015

Iranian Researchers Boost Solar Cells Efficiency Using Anti-Aggregates January 26th, 2015

Announcements

Nanoparticles Increase Durability of Concrete Decorations in Cold Areas January 26th, 2015

Iranian Researchers Boost Solar Cells Efficiency Using Anti-Aggregates January 26th, 2015

Detection of Heavy Metals in Samples with Naked Eye January 26th, 2015

Engineering self-assembling amyloid fibers January 26th, 2015

Photonics/Optics/Lasers

Scientists 'bend' elastic waves with new metamaterials that could have commercial applications: Materials could benefit imaging and military enhancements such as elastic cloaking January 23rd, 2015

Teijin to Participate in Nano Tech 2015 January 22nd, 2015

New method to generate arbitrary optical pulses January 21st, 2015

New signal amplification process set to transform communications, imaging, computing: UC San Diego researchers discover a mechanism to amplify signals in optoelectronic systems that is far more efficient than standard processes January 21st, 2015

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