Direct deposition of magnetite thin films on organic semiconductors

被引:11
作者
Arisi, Emilia [1 ]
Bergenti, Ilaria [1 ]
Cavallini, Massimiliano [1 ]
Riminucci, Alberto [1 ]
Ruani, Giampiero [1 ]
Dediu, Valentin [1 ]
Ghidini, Massimo [2 ,3 ]
Pernechele, Chiara [2 ,3 ]
Solzi, Massimo [2 ,3 ]
机构
[1] CNR, ISMN, Ist Studio Mat Nanostrutturati, Sez Bologna, I-40129 Bologna, Italy
[2] Univ Parma, Dipartimento Fis, I-43100 Parma, Italy
[3] Univ Parma, CNISM, I-43100 Parma, Italy
关键词
D O I
10.1063/1.2936290
中图分类号
O59 [应用物理学];
学科分类号
摘要
Technological procedures able to produce high quality electrodes from magnetic oxides in vertical organic-inorganic hybrid devices is a challenging task in the field of organic spintronics. Thin films of magnetite (Fe3O4) have been successfully grown directly on top of organic semiconductor layers, tris(8-hydroxyquinoline)aluminium(III) (Alq(3)), by pulsed-electron ablation technique. The films show ferromagnetic behavior and good structural quality, properties detected by magneto-optical Kerr effect, superconductor quantum interference device, micro-Raman spectroscopy, and Atomic Force Microscopy. The ferromagnetic behavior persists even for 10 nm thick films. Charge injection at magnetite-organic interface has been finally demonstrated by detecting electroluminescence from Alq(3). (c) 2008 American Institute of Physics.
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页数:3
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