TITLE

A high-extraction-efficiency nanopatterned organic light-emitting diode

AUTHOR(S)
Lee, Yong-Jae; Kim, Se-Heon; Huh, Joon; Kim, Guk-Hyun; Lee, Yong-Hee; Cho, Sang-Hwan; Kim, Yoon-Chang; Do, Young Rag
PUB. DATE
May 2003
SOURCE
Applied Physics Letters;5/26/2003, Vol. 82 Issue 21, p3779
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
To improve light extraction from organic light-emitting diodes (OLEDs), we introduced a photonic crystal pattern into the glass substrate of an OLED. The periodic modulation converts the guided waves in the high-refractive-index indium-tin-oxide/organic layers into external leaky waves. We used the finite-difference time-domain method to optimize the structural parameters of the photonic crystal pattern and to analyze the microcavity effect by the metallic cathode of the OLED. With the use of an optimized photonic crystal pattern, an increase of over 80% in the extraction efficiency of the OLED is expected theoretically. An increase in the extraction efficiency of over 50% was achieved experimentally, without detriment to the crucial electrical properties of the OLED.
ACCESSION #
9815446

 

Related Articles

  • Variety in photonics. Clark, Warren // Electro Optics;Jun/Jul2010, Issue 206, p3 

    An overview of various topics discussed within the issue related to photonicsis presented, including an investigation into the development of products aimed at light emitting diode testing, the demands on optics manufacturers when it comes to developing products suitable for use with ultraviolet...

  • Analysis of photon recycling in light emitting diodes with nonuniform injection. Tsutsui, N.; Khmyrova, I.; Ryzhii, V.; Ikegami, T. // Journal of Applied Physics;9/15/2000, Vol. 88 Issue 6, p3613 

    Studies the effect of photon recycling in double heterostructure light emitting diodes (LED) with relatively small area contact providing nonuniform injection of electrons. Description of the model; Spatial distribution of output radiation; External quantum efficiency.

  • Silver-enhanced silicon nitride LED is efficient integrated-photonics source.  // Laser Focus World;Jul2012, Vol. 48 Issue 7, p9 

    The article reports on the efficiency of silver-enhanced silicon nitride light emitting diode (LED) as integrated-photonics souce.

  • Quantum boxes as active probes for photonic microstructures: The pillar microcavity case. GeĀ“rard, J. M.; Barrier, D.; Marzin, J. Y.; Kuszelewicz, R.; Manin, L.; Costard, E.; Thierry-Mieg, V.; Rivera, T. // Applied Physics Letters;7/22/1996, Vol. 69 Issue 4, p449 

    A GaAs/AlAs planar cavity containing a collection of InAs quantum boxes in its core region has been grown in a single step by molecular beam epitaxy, and processed by electron-beam lithography and reactive ion etching into pillar microresonators. The optical study by photoluminescence of these...

  • European Photonics Industry Consortium releases its 2011 market review.  // Electro Optics;Apr2012, Issue 222, p6 

    The article discusses highlights of the European Photonics Industry Consortium's (EPIC) "LEDs: The 2011 Market Review," noting the rising sales of light emitting diode (LED) back lighting unit systems and the falling demand for LED chips.

  • Brightening moods with LEDs. Jones-Bey, Hassaun A. // Laser Focus World;May2003, Vol. 39 Issue 5, pS3 

    Reports that high-brightness light-emitting diodes (LED) account for five percent of the market for illumination applications in the U.S. Ambience that can be created using the technology; Growth in the market of LED illumination; Impact of accelerating the technology on the budget of the state.

  • Polymer work opens up way to cheap LEDs.  // Electronics Weekly;9/18/2002, Issue 2068, p15 

    Describes a technique for embossing photonic structures onto light emitting polymers developed at the University of St. Andrews and University of Exeter in Great Britain. Advantage of using polymers; Procedures in making photonic microstructures such as gratings and light emitting diodes using...

  • Physics and applications of organic microcavity light emitting diodes. Dodabalapur, A.; Rothberg, L. J.; Jordan, R. H.; Miller, T. M.; Slusher, R. E.; Phillips, Julia M. // Journal of Applied Physics;12/15/1996, Vol. 80 Issue 12, p6954 

    Presents a study which examined the changes produced on the electroluminescence characteristics of organic materials due to planar microactivity effects. Details on the distribution of photon density of states; Evaluation of intensity enhancement in 8-hydroxyquinoline aluminum-based cavity...

  • Mg-doped green light emitting diodes over cubic (111) MgAl[sub 2]O[sub 4] substrates. Lane, B.; Wu, D. // Applied Physics Letters;3/17/1997, Vol. 70 Issue 11, p1444 

    Examines the fabrication of magnesium doped green light emitting diodes over cubic MgAl[sub 2]O[sub 4] substrates. Determination of the output power and external quantum efficiency; Contention on impurity band LED as alternative to band edge emission green LED; Use of time resolved...

Share

Read the Article

Courtesy of THE LIBRARY OF VIRGINIA

Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics