| Original Articles |
|
|
|
|
Enhancement of Stability of Polymer Light-Emitting Diodes by Post Annealing |
| YAO Bing;XIE Zhi-Yuan;YANG Jun-Wei;CHENG Yan-Xiang;WANG Li-Xiang |
| State Key Laboratory of Polymer Physics and Chemistry, Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130022 |
|
| Cite this article: |
|
YAO Bing, XIE Zhi-Yuan, YANG Jun-Wei et al 2007 Chin. Phys. Lett. 24 1383-1835 |
|
|
|
|
Abstract We investigate the effect of thermal annealing before and after cathode deposition on the stability of polymer light-emitting diodes (PLEDs) based on green fluorescent polyfluorene derivative. The annealed PLEDs exhibit improved charge transport and red-shift emission compared to the as-fabricated device. The stability of the PLEDs is largely enhanced by post-annealing before and after Ca deposition, which is attributed to the enhanced charge transport and the intimate contact between the cathode and the emissive layer.
|
| Keywords:
78.60.Fi
85.60.Jb
78.66.Qn
|
|
|
Received: 11 December 2006
Published: 23 April 2007
|
|
|
|
|
|
|
|
[1] Burroughes J H, Bradley D D C, Brown A R, Marks R N, Mackey K,Friend R H, Burn P L and Holmes A B 1990 Nature 347 539
[2] Kim S Y, Kim K Y and Tak Y H and Lee J L 2006 Appl. Phys.Lett. 89 132108
[3] Gautier E, Lorin A, Nunzi J M, Schalchli A, Benattar J J and VitalD 1996 Appl. Phys. Lett. 69 1071
[4] Aziz H, Popovic Z D, Hu N X, Hor A M and Xu G 1999 Science 283 1900
[5] Shina H J, Jung M C, Chung J, Kim K, Lee J C and Lee S P 2006 Appl. Phys. Lett. 89 063503
[6] Tang C W, VanSlyke S A and Chen C H 1989 J. Appl. Phys. 65 3610
[7] Hamada Y, Sano T, Shibata K and Kuroki K 1995 Jpn. J. Appl.Phys. II 34 L824
[8] Shi J and Tang C W 1997 Appl. Phys. Lett. 70 1665
[9] Kuwabara Y, Ogawa H, Inada H, Noma N and Shirota Y 1994 Adv.Mater. 9 677
[10] Tokito S, Tanaka H, Okada A and Taga Y 1996 Appl. Phys.Lett. 69 878
[11] Kim J S, Friend R H, Grizzi I and Burroughes J H 2005 Appl.Phys. Lett. 87 023506
[12] VanSlyke S A, Chen C H and Tang C W 1996 Appl. Phys. Lett. 69 2160
[13] Hung L S, Tang C W and Mason M G 1997 Appl. Phys. Lett. 70 152
[14] Lee T W, Kim M G , Kim S Y, Park S H, Kwon O, Noh T and Oh T S2006 Appl. Phys. Lett. 89 123505
[15] Liu J, Guo T and Yang Y 2002 J. Appl. Phys. 91 1595
[16] Lee T and Park O O 2000 Adv. Mater. 12 801
[17] Niu Y, Hou Q and Cao Y 2002 Appl. Phys. Lett. 81 634
[18] Sun R G, Wang Y Z, Wang D K, Zheng Q B, Kyllo E M, Gustafson T Land Epstein A J 2000 Appl. Phys. Lett. 76 634 |
|
Viewed |
|
|
|
Full text
|
|
|
|
|
Abstract
|
|
|
|
|
