A systematic study on efficiency enhancements in phosphorescent green, red and blue microcavity organic light emitting devices

Chaoyu Xiang; Wonhoe Koo; Franky So; Hisahiro Sasabe; Junji Kido

doi:10.1038/lsa.2013.30

Go to Nature Website

Your Location：

Home >

Browse articles >

A systematic study on efficiency enhancements in phosphorescent green, red and blue microcavity organic light emitting devices

Original Articles

- A systematic study on efficiency enhancements in phosphorescent green, red and blue microcavity organic light emitting devices
- Light: Science & Applications Vol. 2, Issue 1-2, (2013)
- Affiliations：
  
  1.Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611-6400, USA
  2.Department of Polymer Science and Engineering, Yamagata University, Yamagata 992-8510, Japan
- Author bio：
  
  F So, Department of Materials Science and Engineering, University of Florida, Gainesville, FL 32611-6400, USA Email: fso@mse.ufl.edu
- Funds：
- DOI：10.1038/lsa.2013.30
  CLC：
- Published：2013-06，
  
  Published Online：07 June 2013，
  
  Received：17 October 2012，
  
  Revised：08 January 2013，
  
  Accepted：12 January 2013
- Accepted：
Scan QR Code
Xiang, C. Y. et al. A systematic study on efficiency enhancements in phosphorescent green, red and blue microcavity organic light emitting devices. Light: Science & Applications, 2, e74 (2013).
DOI：

Xiang, C. Y. et al. A systematic study on efficiency enhancements in phosphorescent green, red and blue microcavity organic light emitting devices. Light: Science & Applications, 2, e74 (2013). DOI： 10.1038/lsa.2013.30.

摘要

Abstract

A systematic study has been conducted on microcavity organic light emitting diodes (OLEDs) based on green

red and blue phosphorescent emitters to elucidate the microcavity effects for different color emitters. We found that the luminance output is determined by the reflectivity of the semitransparent electrode and the photopic response of the green

red and blue emitters. While the luminance enhancements of blue and red phosphorescent microcavity devices are small

a current efficiency as high as 224 cd A

−1

is obtained in the green phosphorescent microcavity OLEDs.

关键词

Keywords

efficiency enhancementsmicrocavityorganic light emitting devicesphosphorescencephotopic luminosity

references

Geffroy B, Le Roy P, Prat C. Organic light-emitting diode (OLED) technology: materials, devices and display technologies.Polym Int2006;55: 572–582..

Zhou LS, Wanga A, Wu SC, Sun J, Park Set al. All-organic active matrix flexible display.Appl Phys Lett2006;88: 083502–083505..

Yang CJ, Lin CL, Wu CC, Yeh YH, Cheng CCet al. High-contrast top-emitting organic light-emitting devices for active-matrix displays.Appl Phys Lett2005;87: 143507–143510..

Peng HJ, Sun JX, Zhu XL, Yu XM, Wong Met al. High-efficiency microcavity top-emitting organic light-emitting diodes using silver anode.Appl Phys Lett2006;88: 073517–073520..

Kim HK, Cho SH, Oh JR, Lee YH, Lee JHet al. Deep blue, efficient, moderate microcavity organic light-emitting diodes.Org Electron2010;11: 137–145..

Qiu XJ, Tan XW, Wang Z, Liu GY, Xiong ZH. Tunable, narrow, and enhanced electroluminescent emission from porous-silicon-reflector-based organic microcavities.J Appl Phys2006;100: 074503–074509..

Wang ZB, Helander MG, Qiu J, Puzzo DP, Greiner MTet al. Unlocking the full potential of organic light-emitting diodes on flexible plastic.Nat Photon2011;5: 753–757..

Cho TY, Lin CL, Wu CC. Microcavity two-unit tandem organic light-emitting devices having a high efficiency.Appl Phys Lett2006;88: 111106–111109..

Lee J, Chopra N, Bera D, Maslov S, Eom SHet al. Down-conversion white organic light-emitting diodes using microcavity structure.Adv Energy Mater2011;1: 174–178..

Lin CL, Lin HW, Wu CC. Examining microcavity organic light-emitting devices having two metal mirrors.Appl Phys Lett2005;87: 021101–021104..

Meerheim R, Nitsche R, Leo K. High-efficiency monochrome organic light emitting diodes employing enhanced microcavities.Appl Phys Lett2008;93: 043310–043313..

Dodabalapur A, Rothberg LJ, Jordan RH, Miller TM, Slusher REet al. Physics and applications of organic microcavity light emitting diodes.J Appl Phys1996;80: 6954–6964..

Ho MH, Wu CY, Chen TM, Chen CH. Efficient and color-saturated inverted bottom-emitting organic light-emitting devices with a semi-transparent metal-assisted electron injection layer.J Lumin2011;131: 78–82..

Li YQ, Tang JX, Xie ZY, Hung LS, Lau SS. An efficient organic light-emitting diode with silver electrodes.Chem Phys Lett2004;386: 128–131..

Zhang XW, Li J, Zhang L, Jiang XY, Haq KUet al. Top-emitting organic light-emitting device with high efficiency and low voltage using a silver-silver microcavity.Thin Solid Films2010;518: 1756–1759..

Neyts K, de Visschere P, Fork DK, Anderson GB. Semitransparent metal or distributed Bragg reflector for wide-viewing-angle organic light-emitting-diode microcavities.J Opt Soc Am B2000;17: 114–119..

Bulovic V, Khalfin VB, Gu G, Burrows PE, Garbuzov DZet al. Weak microcavity effects in organic light-emitting devices.Phys Rev B1998;58: 3730–3740..

Sasabe H, Gonmori E, Chiba T, Li YJ, Tanaka Det al. Wide-energy-gap electron-transport materials containing 3, 5-dipyridylphenyl moieties for an ultra high efficiency blue organic light-emittingdevice.Chem Mater2008;20: 5951–5953..

He GF, Pfeiffer M, Leo K, Hofmann M, Birnstock Jet al. High-efficiency and low-voltage p-i-n electrophosphorescent organic light-emitting diodes with double-emission layers.Appl Phys Lett2004;85: 3911–3913..

Su SJ, Gonmori E, Sasabe H, Kido J. Highly efficient organic blue-and white-light-emitting devices having a carrier- and exciton-confining structure for reduced efficiency roll-off.Adv Mater2008;20: 4189–4194..

Kang JW, Lee SH, Park HD, Jeong WI, Yoo KMet al. Low roll-off of efficiency at high current density in phosphorescent organic light emitting diodes.Appl Phys Lett2007;90: 223508–223511..

Views

Downloads

CSCD

Alert me when the article has been cited

Submit

Tools

Publicity Resources

Mechanism of mechanical quenching and mechanoluminescence in phosphorescent CaZnOS:Cu

An electrophosphorescent organic light emitting concentrator

Zero-dimensional polariton laser in a subwavelength grating-based vertical microcavity

Strong light–matter interaction in ZnO microcavities

Related Author

Chao-Nan Xu

Yuki Fujio

Akihito Yoshida

Dong Tu

Jaesang Lee

Michael Slootsky

Kyusang Lee

Yifan Zhang

Related Institution

National Institute of Advanced Industrial Science and Technology (AIST)

Interdisciplinary Graduate School of Engineering Sciences, Kyushu University

International Institute for Carbon-Neutral Energy Research (WPI-I2CNER), Kyushu University

Department of Electrical Engineering and Computer Science, University of Michigan

Department of Physics, University of Michigan

⁰