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Chin. Phys. B, 2014, Vol. 23(1): 017803    DOI: 10.1088/1674-1056/23/1/017803

Tandem white organic light-emitting diodes adopting a C60:rubrene charge generation layer

Bi Wen-Tao (毕文涛), Wu Xiao-Ming (吴晓明), Hua Yu-Lin (华玉林), Sun Jin-E (孙金娥), Xiao Zhi-Hui (肖志慧), Wang Li (王丽), Yin Shou-Gen (印寿根)
School of Materials Science and Engineering, Tianjin University of Technology, Tianjin 300384, China
Key Laboratory of Display Materials and Photoelectric Devices, Ministry of Education, Tianjin 300384, China
Tianjin Key Laboratory for Photoelectric Materials and Devices, Tianjin 300384, China
Abstract  Organic bulk heterojunction fullerence (C60) doped 5, 6, 11, 12-tetraphenylnaphthacene (rubrene) as the high quality charge generation layer (CGL) with high transparency and superior charge generating capability for tandem organic light emitting diodes (OLEDs) is developed. This CGL shows excellent optical transparency about 90%, which can reduce the optical interference effect formed in tandem OLEDs. There is a stable white light emission including 468 nm and 500 nm peaks from the blue emitting layer and 620 nm peak from the red emitting layer in tandem white OLEDs. A high efficiency of about 17.4 cd/A and CIE coordinates of (0.40, 0.35) at 100 cd/m2 and (0.36, 0.34) at 1000 cd/m2 have been demonstrated by employing the developed CGL, respectively.
Keywords:  tandem white organic light-emitting diodes      organic bulk heterojunction      charge generation layer      current efficiency  
Received:  26 February 2013      Revised:  24 June 2013      Accepted manuscript online: 
PACS:  78.60.Fi (Electroluminescence)  
  79.60.Bm (Clean metal, semiconductor, and insulator surfaces)  
  79.60.Fr (Polymers; organic compounds)  
Fund: Project supported by the National Natural Science Foundation of China (Grant No. 60906022), the Natural Science Foundation of Tianjin, China (Grant No. 10JCYBJC01100), the Scientific Developing Foundation of Tianjin Education Commission, China (Grant No. 2011ZD02), and the Tianjin Natural Science Council, China (Grant No. 10SYSYJC28100).
Corresponding Authors:  Wu Xiao-Ming, Hua Yu-Lin     E-mail:;

Cite this article: 

Bi Wen-Tao (毕文涛), Wu Xiao-Ming (吴晓明), Hua Yu-Lin (华玉林), Sun Jin-E (孙金娥), Xiao Zhi-Hui (肖志慧), Wang Li (王丽), Yin Shou-Gen (印寿根) Tandem white organic light-emitting diodes adopting a C60:rubrene charge generation layer 2014 Chin. Phys. B 23 017803

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