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有机器件电流自旋极化放大性质研究

窦兆涛 任俊峰 王玉梅 原晓波 胡贵超

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有机器件电流自旋极化放大性质研究

窦兆涛, 任俊峰, 王玉梅, 原晓波, 胡贵超

Enlargement of current spin polarization in organic spintronic device

Dou Zhao-Tao, Ren Jun-Feng, Wang Yu-Mei, Yuan Xiao-Bo, Hu Gui-Chao
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  • 基于自旋扩散漂移方程,考虑到电场的影响及有机半导体中特殊的载流子电荷自旋关系, 对一个简单的T型结构有机自旋器件模型进行了理论研究,得出了此有机器件的电流自旋极化放大率表达式.研究表明,器件中极化子比率、电场和电流密度都会影响器件的电流自旋极化放大率,通过调节此有机器件的电场和极化子比率可以获得较大的电流自旋极化放大率.
    Using the spin diffusion-drift equation and considering the effects of the electric fields and the special carriers in organic semiconductors, the enlargement ratio of current spin polarization in a simple T-shaped organic spintronic device is theoretically studied. It is found that the significant enlargement ratio of the current spin polarization can be acquired by adjusting the electric field and the polaron ratio in organic semiconductor.
    • 基金项目: 国家自然科学基金 (批准号: 10904083, 10904084)、山东省优秀中青年科学家科研奖励基金(批准号: BS2009CL008) 和山东省高等学校科技奖励计划(批准号: J09LA03)资助的课题.
    • Funds: Project supported by the National Natural Science Foundation of China (Grant Nos. 10904083, 10904084), the Distinguished Middle-Aged and Young Scientist Encourage and Reward Foundation of Shandong Province, China (Grant No. BS2009CL008), and the Science and Technology Reward Program of Institution of Higher Education of Shandong Province, China (Grant No. J09LA03).
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    [6]
    [7]

    Friend R H, Gymer R W, Holmes A B, Burroughes J H, Marks R N, Taliani C, Bradley D D C, Dos Santos D A, Brdas J L, Lgdlund M, Salaneck W R 1999 Nature 397 121

    [8]
    [9]

    Forrest S, Burrows P, Thompson M 2000 IEEE Spectr. 37 29

    [10]
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    Chen H M, Jin B S 2010 Micronanoelectron. Technol. 47 470 (in Chinese) [陈海明, 靳宝善 2010 微纳电子技术 47 470]

    [13]

    Wang L X, Zhang D C, Liu D S, Han S H, Xie S J 2003 Acta Phys. Sin. 52 2547 (in Chinese) [王鹿霞, 张大成, 刘德胜, 韩圣浩, 解士杰 2003 物理学报 52 2547]

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    [26]
    [27]
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    [29]
    [30]

    Li C H, van 't Erve O M J, Jonker B T 2011 Nat. Commun. 2 245

    [31]
    [32]

    Xie S J, Ahn K H, Smith D L, Bishop A R, Saxena A 2003 Phys. Rev. B 67 125202

    [33]

    Fu J Y, Ren J F, Liu X J, Xie S J 2006 Phys. Rev. B 73 195401

    [34]
    [35]

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    [37]

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    [40]
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    [43]
    [44]

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    [45]
    [46]

    Mi Y L, Zhang M, Yan H 2008 Phys. Lett. A 372 6434

    [47]
    [48]

    Jung S W, Lee H W 2006 Phys. Rev. B 73 165302

    [49]

    Yu Z G, Flatt M E 2002 Phys. Rev. B 66 201202(R)

    [50]
    [51]

    Yu Z G, Flatt M E 2002 Phys. Rev. B 66 235302

    [52]
    [53]
    [54]

    Aronov A G, Pikus G E 1976 Fiz. Tekh. Poluprovodn. 10 1177

    [55]

    Ren J F, Zhang Y B, Xie S J 2008 Org. Electron. 9 1017

    [56]
    [57]

    Xiu M X, Ren J F, Wang Y M 2010 J. At. Mol. Phys. 27 353

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出版历程
  • 收稿日期:  2011-07-10
  • 修回日期:  2012-04-28
  • 刊出日期:  2012-04-20

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