GIANT MAGNETO-ELECTROLUMINESCENCE FROM HYBRID SPIN-ORGANIC LIGHT EMITTING DIODES

被引：4

作者：

Sun, Dali ^{[1
]}

Basel, Tek P. ^{[1
]}

Gautam, Bhoj R. ^{[1
]}

Han, Wei ^{[2
]}

Jiang, Xin ^{[2
]}

Parkin, Stuart S. P. ^{[2
]}

Vardeny, Z. Valy ^{[1
]}

机构：

[1] Univ Utah, Dept Phys & Astron, Salt Lake City, UT 84112 USA

[2] IBM Almaden Res Ctr, IBM Res Div, San Jose, CA 95120 USA

来源：

SPIN | 2014年 / 4卷 / 01期

基金：

美国国家科学基金会;

关键词：

Magnetic tunnel junction; organic light-emitting diodes; magneto-electroluminescence; organic/inorganic hybrid device;

D O I：

10.1142/S2010324714500027

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An important application that may boost the use of magnetic-field controlled organic devices is significant magnetically modulated electroluminescence (MEL) at room temperature (RT). Whereas inorganic magnetic tunnel junctions show RT magneto-resistance (MR)> 80%, these devices do not exhibit electroluminescence. In contrast, organic light-emitting diodes (OLED) show substantive electroluminescence. Alas, at RT both organic spin valves and spin-OLEDs have shown rather small MR and MEL. We report here a hybrid organic/inorganic magnetic-field controlled device (h-OLED) which comprises of an inorganic magnetic tunnel junction with large room temperature MR, and OLED having efficient electroluminescence. At RT the h-OLED devices exhibit up to 80% giant MEL in the red, green, and blue spectral ranges. Moreover studies of "white" h-OLED devices show a surprising magnetic-field controlled color manipulation. The h-OLED devices may open a new avenue in the application of multifunctional organic displays.

引用

页数：10

共 37 条

[1] High-efficiency fluorescent organic light-emitting devices using a phosphorescent sensitizer [J].

Baldo, MA ;

Thompson, ME ;

Forrest, SR .

NATURE, 2000, 403 (6771) :750-753

[2] Highly efficient phosphorescent emission from organic electroluminescent devices [J].

Baldo, MA ;

O'Brien, DF ;

You, Y ;

Shoustikov, A ;

Sibley, S ;

Thompson, ME ;

Forrest, SR .

NATURE, 1998, 395 (6698) :151-154

[3] Unravelling the role of the interface for spin injection into organic semiconductors [J].

Barraud, Clement ;

Seneor, Pierre ;

Mattana, Richard ;

Fusil, Stephane ;

Bouzehouane, Karim ;

Deranlot, Cyrile ;

Graziosi, Patrizio ;

Hueso, Luis ;

Bergenti, Ilaria ;

Dediu, Valentin ;

Petroff, Frederic ;

Fert, Albert .

NATURE PHYSICS, 2010, 6 (08) :615-620

[4] Inversion of magnetoresistance in organic semiconductors [J].

Bergeson, J. D. ;

Prigodin, V. N. ;

Lincoln, D. M. ;

Epstein, A. J. .

PHYSICAL REVIEW LETTERS, 2008, 100 (06)

[5] Bipolaron mechanism for organic magnetoresistance [J].

Bobbert, P. A. ;

Nguyen, T. D. ;

van Oost, F. W. A. ;

Koopmans, B. ;

Wohlgenannt, M. .

PHYSICAL REVIEW LETTERS, 2007, 99 (21)

[6] Spin-dependent tunneling conductance of Fe|MgO|Fe sandwiches -: art. no. 054416 [J].

Butler, WH ;

Zhang, XG ;

Schulthess, TC ;

MacLaren, JM .

PHYSICAL REVIEW B, 2001, 63 (05)

[7] Room-temperature spintronic effects in Alq3-based hybrid devices [J].

Dediu, V. ;

Hueso, L. E. ;

Bergenti, I. ;

Riminucci, A. ;

Borgatti, F. ;

Graziosi, P. ;

Newby, C. ;

Casoli, F. ;

De Jong, M. P. ;

Taliani, C. ;

Zhan, Y. .

PHYSICAL REVIEW B, 2008, 78 (11)

[8]

Dediu VA, 2009, NAT MATER, V8, P707, DOI [10.1038/nmat2510, 10.1038/NMAT2510]

[9] Direct measurement of the electronic spin diffusion length in a fully functional organic spin valve by low-energy muon spin rotation [J].

Drew, A. J. ;

Hoppler, J. ;

Schulz, L. ;

Pratt, F. L. ;

Desai, P. ;

Shakya, P. ;

Kreouzis, T. ;

Gillin, W. P. ;

Suter, A. ;

Morley, N. A. ;

Malik, V. K. ;

Dubroka, A. ;

Kim, K. W. ;

Bouyanfif, H. ;

Bourqui, F. ;

Bernhard, C. ;

Scheuermann, R. ;

Nieuwenhuys, G. J. ;

Prokscha, T. ;

Morenzoni, E. .

NATURE MATERIALS, 2009, 8 (02) :109-114

[10] 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

← 1 2 3 4 →