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Highly efficient blue fluorescent OLEDs with doped double emitting layers based on p–n heterojunctions |
Su Yue-Ju(苏跃举)a)b)c), Wu Xiao-Ming(吴晓明)a)b)c), Hua Yu-Lin(华玉林)a)b)c)†, Shen Li-Ying(申利莹)a)b)c), Jiao Zhi-Qiang(焦志强) a)b)c), Dong Mu-Sen(董木森)a)b)c), and Yin Shou-Gen(印寿根)a)b)c) |
1. School of Materials Science & Engineering, Tianjin University of Technology, Tianjin 300384, China; 2. Key Laboratory of Display Materials & Photoelectric Devices of Ministry of Education, Tianjin University of Technology, Tianjin 300384, China; 3. Tianjin Key Laboratory for Photoelectric Materials & Devices, Tianjin University of Technology, Tianjin 300384, China |
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Abstract We fabricate a kind of novel efficient blue fluorescent organic light emitting device (OLED) based on p--n heterojunctions composed of hole transporting layer (HTL) $N$,$N^\prime$-bis(naphthalen-1-yl)-$N$,$N^\prime$-bis(phenyl)-benzidine (NPB) and electron transporting layer (ETL) 4,7-diphnenyl-1,10-phenanthroline (BPhen), into which a new blue material, DNCA (a derivation of N6, N6, N12, N12-tetrap-tolylchrysene-6,12-diamine), is partially doped simultaneously, and double emitting layers are configured. With a turn-on voltage of 2.6 V at 1 cd/m2, this type of OLED presents a maximum luminance efficiency (ηmax) of 8.83 cd/A at 5.818 mA/cm2 and a maximum luminance of over 40000 cd/m2. Meanwhile, the Commission Internationale De L'Eclairage (CIE) coordinates of this device change slightly from (0.13, 0.27) to (0.13, 0.23) as the driving voltage increases from 3 V to 11 V. This improvement in the electroluminescent characteristics is attributed mainly to the ideal p--n heterojunction which can confine and distribute excitons evenly on two sides of the heterojunction interface so as to improve the carrier combination rate and expand the light-emitting region.
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Received: 14 September 2011
Revised: 27 April 2012
Accepted manuscript online:
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PACS:
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85.60.Bt
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(Optoelectronic device characterization, design, and modeling)
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85.60.Jb
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(Light-emitting devices)
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78.60.Fi
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(Electroluminescence)
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Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 60906022 and 60876046) and the Tianjin Natural Science Foundation, China (Grant No. 10JCYBJC01100). |
Cite this article:
Su Yue-Ju(苏跃举), Wu Xiao-Ming(吴晓明), Hua Yu-Lin(华玉林), Shen Li-Ying(申利莹), Jiao Zhi-Qiang(焦志强), Dong Mu-Sen(董木森), and Yin Shou-Gen(印寿根) Highly efficient blue fluorescent OLEDs with doped double emitting layers based on p–n heterojunctions 2012 Chin. Phys. B 21 058503
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[1] |
Hung L S and Chen C H 2002 Mater. Sci. Eng. R 39 143
|
[2] |
Liu N L, Ai N, Hu D G, Yu S F, Peng J B, Cao Y and Wang J 2001 Acta Phys. Sin. 60 087805 (in Chinese)
|
[3] |
Cao G H, Qin D S, Guan M, Cao J S, Zeng Y P and Li J M 2008 Chin. Phys. B 17 1674
|
[4] |
Adachi C, Baldo M A, Thompson M E and Forrest S R 2001 J. Appl. Phys. 90 5048
|
[5] |
Baldo M A, O'Brien D F, You Y, Shoustikov A, Sibley S, Thompson M E and Forrest S R 1998 Nature 395 151
|
[6] |
Adachi C, Kwong R C, Djurovich P, Adamovich V, Baldo M A, Thompson M E and Forrest S R 2001 Appl. Phys. Lett. 79 2082
|
[7] |
Wen S W, Lee M T and Chen C H 2005 J. Disp. Technol. 1 90
|
[8] |
Chopra N, Swensen J S, Polikarpov E, Cosimbescu L, So F and Padmaperuma A B 2010 Appl. Phys. Lett. 97 033304
|
[9] |
Lee J, Lee J L, Lee J Y and Chu H Y 2009 Appl. Phys. Lett. 94 193305
|
[10] |
Qi Q J, Wu X M, Hua Y L, Hou Q C, Dong M S, Mao Z Y, Yin B and Yin S G 2010 Org. Electron. 11 503
|
[11] |
Zheng T and Choy W C 2008 J. Phys. D: Appl. Phys. 41 055103
|
[12] |
He G, Pfeiffer M, Leo K, Hofmann M, Birnstock J, Pudzich R and Salbeck J 2004 Appl. Phys. Lett. 85 3911
|
[13] |
Khalifa M B, Mazzeo M, Maiorano V, Mariano F, Carallo S, Melcarne A, Cingolani R and Gigli G 2008 J. Phys. D:Appl. Phys. 41 155111
|
[14] |
Zhang H M, Choy W C H and Li K 2010 IEEE Trans. Electron. Dev. 57 125
|
[15] |
Chen B, Lee C S, Lee S T, Webb P, Chan Y C, Gambling W, Tian H and Zhu W 2000 Jpn. J. Appl. Phys. 39 1190
|
[16] |
NaKa S, Okada H, Onnagawa H, Tsutsu T 2000 Appl. Phys. Lett. 76 197
|
[17] |
Chao C L and Chen S A 1998 Appl. Phys. Lett. 73 426
|
[18] |
Feng J, Li F, Gao W B, Liu S Y, Liu Y and Wang Y 2001 Appl. Phys. Lett. 78 3947
|
[19] |
Tang C W, Vanslyke S A and Chen C H 1989 J. Appl. Phys. 65 3610
|
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