Improved hole-injection and power efficiency of organic light-emitting diodes using an ultrathin cerium fluoride buffer layer

Hsin Wei Lu, Po Ching Kao, Sheng Yuan Chu

研究成果: Conference contribution

摘要

In this study, the efficiency of organic light-emitting diodes (OLEDs) was enhanced by depositing a CeF3 film as an ultra-thin buffer layer between the ITO and NPB hole transport layer, with the structure configuration ITO/CeF3 (1 nm)/NPB (40 nm)/Alq3 (60 nm)/LiF (1 nm)/Al (150 nm). The enhancement mechanism was systematically investigated via several approaches. The work function increased from 4.8 eV (standard ITO electrode) to 5.2 eV (1-nm-thick UV-ozone treated CeF3 film deposited on the ITO electrode). The turn-on voltage decreased from 4.2 V to 4.0 V at 1 mA/cm2, the luminance increased from 7588 cd/m2 to 10820 cd/m2, and the current efficiency increased from 3.2 cd/A to 3.5 cd/A when the 1-nm-thick UV-ozone treated CeF3 film was inserted into the OLEDs.

原文English
主出版物標題Organic Light Emitting Materials and Devices XX
編輯Franky So, Chihaya Adachi, Jang-Joo Kim
發行者SPIE
ISBN(電子)9781510602731
DOIs
出版狀態Published - 2016 一月 1
事件Organic Light Emitting Materials and Devices XX - San Diego, United States
持續時間: 2016 八月 282016 八月 30

出版系列

名字Proceedings of SPIE - The International Society for Optical Engineering
9941
ISSN(列印)0277-786X
ISSN(電子)1996-756X

Other

OtherOrganic Light Emitting Materials and Devices XX
國家United States
城市San Diego
期間16-08-2816-08-30

指紋

Organic Light-emitting Diodes
Organic light emitting diodes (OLED)
power efficiency
Cerium
Buffer layers
cerium
ITO (semiconductors)
fluorides
Buffer
Injection
light emitting diodes
Ozone
buffers
injection
Electrode
ozone
Electrodes
Luminance
electrodes
Enhancement

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering

引用此文

Lu, H. W., Kao, P. C., & Chu, S. Y. (2016). Improved hole-injection and power efficiency of organic light-emitting diodes using an ultrathin cerium fluoride buffer layer. 於 F. So, C. Adachi, & J-J. Kim (編輯), Organic Light Emitting Materials and Devices XX [994124] (Proceedings of SPIE - The International Society for Optical Engineering; 卷 9941). SPIE. https://doi.org/10.1117/12.2237242
Lu, Hsin Wei ; Kao, Po Ching ; Chu, Sheng Yuan. / Improved hole-injection and power efficiency of organic light-emitting diodes using an ultrathin cerium fluoride buffer layer. Organic Light Emitting Materials and Devices XX. 編輯 / Franky So ; Chihaya Adachi ; Jang-Joo Kim. SPIE, 2016. (Proceedings of SPIE - The International Society for Optical Engineering).
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Lu, HW, Kao, PC & Chu, SY 2016, Improved hole-injection and power efficiency of organic light-emitting diodes using an ultrathin cerium fluoride buffer layer. 於 F So, C Adachi & J-J Kim (編輯), Organic Light Emitting Materials and Devices XX., 994124, Proceedings of SPIE - The International Society for Optical Engineering, 卷 9941, SPIE, Organic Light Emitting Materials and Devices XX, San Diego, United States, 16-08-28. https://doi.org/10.1117/12.2237242

Improved hole-injection and power efficiency of organic light-emitting diodes using an ultrathin cerium fluoride buffer layer. / Lu, Hsin Wei; Kao, Po Ching; Chu, Sheng Yuan.

Organic Light Emitting Materials and Devices XX. 編輯 / Franky So; Chihaya Adachi; Jang-Joo Kim. SPIE, 2016. 994124 (Proceedings of SPIE - The International Society for Optical Engineering; 卷 9941).

研究成果: Conference contribution

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Lu HW, Kao PC, Chu SY. Improved hole-injection and power efficiency of organic light-emitting diodes using an ultrathin cerium fluoride buffer layer. 於 So F, Adachi C, Kim J-J, 編輯, Organic Light Emitting Materials and Devices XX. SPIE. 2016. 994124. (Proceedings of SPIE - The International Society for Optical Engineering). https://doi.org/10.1117/12.2237242