Magnetic Nanofilm of Fe3O4 for Highly Efficient Organic Light-Emitting Devices

被引：24

作者：

Feng, Jing ^{[1
]}

Zhang, Dan-Dan ^{[1
]}

Liu, Yue-Feng ^{[1
]}

Bai, Yu ^{[1
]}

Chen, Qi-Dai ^{[1
]}

Liu, Shi-Yong ^{[1
]}

Sun, Hong-Bo ^{[1
,2
]}

机构：

[1] Jilin Univ, State Key Lab Integrated Optoelect, Coll Elect Sci & Engn, Changchun 130012, Peoples R China

[2] Jilin Univ, Coll Phys, Changchun 130023, Peoples R China

来源：

JOURNAL OF PHYSICAL CHEMISTRY C | 2010年 / 114卷 / 14期

关键词：

INDIUM-TIN-OXIDE; SPIN INJECTION; FERROMAGNETIC CATHODE; ELECTROLUMINESCENCE;

D O I：

10.1021/jp9122503

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We have demonstrated enhanced efficiency from organic light-emitting devices (OLEDs) with Fe3O4-coated indium tin oxide (ITO) anodes The current efficiency of the OLEDs with Fe3O4/ITO anode is increased by 10 5%, when an external magnetic field is applied. This improvement is ascribed to the magnetic field-induced spin polarization of holes injected through the spin aligner of the Fe3O4 film, which results in an enhanced formation ratio of singlet excitons. In addition, Fe3O4 is also found acting as an anodic buffer to increase the hole-injection efficiency. The improved luminance and efficiency considered as resulting from the anode interfacial modification of Fe3O4 compared to the devices with bare ITO

引用

页码：6718 / 6721

页数：4

共 31 条

[1] Direct deposition of magnetite thin films on organic semiconductors [J].

Arisi, Emilia ;

Bergenti, Ilaria ;

Cavallini, Massimiliano ;

Riminucci, Alberto ;

Ruani, Giampiero ;

Dediu, Valentin ;

Ghidini, Massimo ;

Pernechele, Chiara ;

Solzi, Massimo .

APPLIED PHYSICS LETTERS, 2008, 93 (11)

[2] FERROMAGNETIC RESONANCE ABSORPTION IN MAGNETITE SINGLE CRYSTALS [J].

BICKFORD, LR .

PHYSICAL REVIEW, 1950, 78 (04) :449-457

[3] Enhanced hole injections in organic light-emitting devices by depositing nickel oxide on indium tin oxide anode [J].

Chan, IM ;

Hsu, TY ;

Hong, FC .

APPLIED PHYSICS LETTERS, 2002, 81 (10) :1899-1901

[4] White organic light-emitting devices for solid-state lighting [J].

D'Andrade, BW ;

Forrest, SR .

ADVANCED MATERIALS, 2004, 16 (18) :1585-1595

[5] Efficient blue organic light-emitting device based on N,N′-di(naphth-2-yl)-N,N′-diphenyl-benzidine with an exciton-confining structure [J].

Divayana, Y. ;

Sun, X. W. ;

Chen, B. J. ;

Lo, G. Q. ;

Jiang, C. Y. ;

Sarma, K. R. .

APPLIED PHYSICS LETTERS, 2006, 89 (17)

[6] Thermally Decomposable Lithium Nitride as an Electron Injection Material for Highly Efficient and Stable OLEDs [J].

Duan, Lian ;

Liu, Qian ;

Li, Yang ;

Gao, Yudi ;

Zhang, Guohui ;

Zhang, Deqiang ;

Wang, Liduo ;

Qiu, Yong .

JOURNAL OF PHYSICAL CHEMISTRY C, 2009, 113 (30) :13386-13390

[7] Mechanism for superparamagnetic behavior in epitaxial Fe3O4 films -: art. no. 184404 [J].

Eerenstein, W ;

Hibma, T ;

Celotto, S .

PHYSICAL REVIEW B, 2004, 70 (18) :1-6

[8] Surface electronic structure of the Fe3O4(100):: Evidence of a half-metal to metal transition -: art. no. 104436 [J].

Fonin, M ;

Pentcheva, R ;

Dedkov, YS ;

Sperlich, M ;

Vyalikh, DV ;

Scheffler, M ;

Rüdiger, U ;

Güntherodt, G .

PHYSICAL REVIEW B, 2005, 72 (10)

[9] High-efficiency electroluminescence from new blue-emitting oligoquinolines bearing pyrenyl or triphenyl endgroups [J].

Hancock, Jessica M. ;

Gifford, Angela P. ;

Tonzola, Christopher J. ;

Jenekhe, Samson A. .

JOURNAL OF PHYSICAL CHEMISTRY C, 2007, 111 (18) :6875-6882

[10] Lowering of operational voltage of organic electroluminescent devices by coating indium-tin-oxide electrodes with a thin CuOx layer [J].

Hu, WP ;

Manabe, K ;

Furukawa, T ;

Matsumura, M .

APPLIED PHYSICS LETTERS, 2002, 80 (15) :2640-2641

← 1 2 3 4 →