Nanoscale optical imaging on an electroluminescent polymer by conducting atomic force microscopy

被引:7
作者
Lin, HN [1 ]
Chen, SH
Lee, YZ
Chen, SA
机构
[1] Natl Tsing Hua Univ, Dept Mat Sci & Engn, Hsinchu 300, Taiwan
[2] Natl Tsing Hua Univ, Dept Electrophys, Hsinchu 300, Taiwan
[3] Natl Sci Council, Precis Instrument Dev Ctr, Hsinchu 300, Taiwan
[4] Natl Tsing Hua Univ, Dept Chem Engn, Hsinchu 300, Taiwan
来源
JOURNAL OF VACUUM SCIENCE & TECHNOLOGY B | 2001年 / 19卷 / 01期
关键词
D O I
10.1116/1.1343099
中图分类号
TM [电工技术]; TN [电子技术、通信技术];
学科分类号
0808 ; 0809 ;
摘要
We demonstrate optical imaging with a resolution of around 50 nm on an electroluminescent polymer by conducting atomic force microscopy. The results indicate that brighter light emission occurs from asperities on the polymer surface. By comparing surface morphologies of the polymer and the indium tin oxide substrate, it is found that similar asperities exist on both surfaces and the polymer becomes thinner on these locations. Therefore, stronger luminescence intensity from asperities is caused by higher electric field due to reduced polymer thickness. The present method can also be extended to obtain simultaneous optical and electrical transport properties. (C) 2001 American Vacuum Society.
引用
收藏
页码:308 / 310
页数:3
相关论文
共 20 条
[1]   Direct determination of the exciton binding energy of conjugated polymers using a scanning tunneling microscope [J].
Alvarado, SF ;
Seidler, PF ;
Lidzey, DG ;
Bradley, DDC .
PHYSICAL REVIEW LETTERS, 1998, 81 (05) :1082-1085
[2]   STM-induced luminescence study of poly(p-phenylenevinylene) by conversion under ultraclean conditions [J].
Alvarado, SF ;
Riess, W ;
Seidler, PF ;
Strohriegl, P .
PHYSICAL REVIEW B, 1997, 56 (03) :1269-1278
[3]   RESONANT PHOTOEMISSION AND THE MECHANISM OF PHOTON-STIMULATED ION DESORPTION IN A TRANSITION-METAL OXIDE [J].
BERTEL, E ;
STOCKBAUER, R ;
KURTZ, RL ;
RAMAKER, DE ;
MADEY, TE .
PHYSICAL REVIEW B, 1985, 31 (08) :5580-5583
[4]   Spatially and temporally resolved emission from aggregates in conjugated polymers [J].
Blatchford, JW ;
Gustafson, TL ;
Epstein, AJ ;
VandenBout, DA ;
Kerimo, J ;
Higgins, DA ;
Barbara, PF ;
Fu, DK ;
Swager, TM ;
MacDiarmid, AG .
PHYSICAL REVIEW B, 1996, 54 (06) :R3683-R3686
[5]   Failure phenomena and mechanisms of polymeric light-emitting diodes: Indium-tin-oxide-damage [J].
Chao, CI ;
Chuang, KR ;
Chen, SA .
APPLIED PHYSICS LETTERS, 1996, 69 (19) :2894-2896
[6]   Electromigration of aluminum cathodes in polymer-based electroluminescent devices [J].
Cumpston, BH ;
Jensen, KF .
APPLIED PHYSICS LETTERS, 1996, 69 (25) :3941-3943
[7]   Enhanced brightness and efficiency in organic electroluminescent devices using SiO2 buffer layers [J].
Deng, ZB ;
Ding, XM ;
Lee, ST ;
Gambling, WA .
APPLIED PHYSICS LETTERS, 1999, 74 (15) :2227-2229
[8]   Modification of the hole injection barrier in organic light-emitting devices studied by ultraviolet photoelectron spectroscopy [J].
Ding, XM ;
Hung, LM ;
Cheng, LF ;
Deng, ZB ;
Hou, XY ;
Lee, CS ;
Lee, ST .
APPLIED PHYSICS LETTERS, 2000, 76 (19) :2704-2706
[9]   Electroluminescence in conjugated polymers [J].
Friend, RH ;
Gymer, RW ;
Holmes, AB ;
Burroughes, JH ;
Marks, RN ;
Taliani, C ;
Bradley, DDC ;
Dos Santos, DA ;
Brédas, JL ;
Lögdlund, M ;
Salaneck, WR .
NATURE, 1999, 397 (6715) :121-128
[10]   Growth of dark spots by interdiffusion across organic layers in organic electroluminescent devices [J].
Fujihira, M ;
Do, LM ;
Koike, A ;
Han, EM .
APPLIED PHYSICS LETTERS, 1996, 68 (13) :1787-1789