Single-Layer Blue Electrophosphorescent Organic Light-Emitting Diodes Based on Small-Molecule Mixed Hosts: Comparison between the Solution and Vacuum Fabrication Processes

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概要

• 論文の詳細を見る

• Single-layer and efficient blue phosphorescence organic light-emitting diodes (PHOLEDs) utilizing a small molecule host, bis[3,5-di(9H-carbazol-9-yl)phenyl]diphenylsilane (SimCP2), as the host material were investigated. All active components including SimCP2, 1,3-bis[(4-tert-butylphenyl)-1,3,4-oxadiazolyl]phenylene (OXD-7), and iridium(III) bis[(4,6-di-fluorophenyl)-pyridinato-N,C^{2}] picolinate (FIrpic) were mixed in an organic solution for wet processing in the fabrication of single-layer PHOLEDs. The device's performance significantly exceeds other small-molecule-host, single-layer, blue PHOLEDs fabricated by the solution process. With minimum efficiency roll-off, a maximum current efficiency of 13.6 cd/A, power efficiency of 8 lm/W, external quantum efficiency of 4.71%, and Commission Internationale de L'Eclairage (CIEx,y) coordinates of (0.15,0.36) at 600 cd/m2 have been achieved. In addition, the device performance of the solution-processed single-layer PHOLED is much greater than that of its vacuum-deposited counterparts.

• 2013-01-25

著者

• Chen Chin-ti

  Institute Of Chemistry Academia Sinica

• Yuan Chih-Hsien

  Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan

• Liu Shun-Wei

  Department of Electronic Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan

• Lee Chih-Chien

  Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 106, Taiwan, Republic of China

• Lin Chun-Feng

  Department of Electronic Engineering, Ming Chi University of Technology, New Taipei City, Taiwan 24301, Republic of China

• Liu Shun-Wei

  Department of Electronic Engineering, Ming Chi University of Technology, New Taipei City 24301, Taiwan, Republic of China

• Chang Yung-Ting

  Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei 10617, Taiwan, Republic of China

• Liu Li-An

  Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan, Republic of China

• Chen Yu-San

  Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 10607, Taiwan, Republic of China

• Wu Chih-I

  Graduate Institute of Photonics and Optoelectronics and Department of Electrical Engineering, National Taiwan University, Taipei 10617, Taiwan, Republic of China

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