Spin-Polarized Carriers Injection from Ferromagnetic Metal into Organic Semiconductor

被引：0

作者：

乔士柱 ^{[1
]}

赵俊卿 ^{[1
]}

贾振锋 ^{[1
]}

张天佑 ^{[1
]}

机构：

[1] School of Science,Shandong Jianzhu University

来源：

Communications in Theoretical Physics | 2010年 / 54卷 / 10期

关键词：

spin-polarized injection; organic semiconductor; polaron;

D O I：

暂无

中图分类号：

TN304.5 [有机半导体];

学科分类号：

0805 ; 080501 ; 080502 ; 080903 ;

摘要：

Charge carriers in organic semiconductor are different from that of traditional inorganic semiconductor.Based on three-current model, considering electrical field effect, we present a theoretical model to discuss spin-polarizedinjection from ferromagnetic electrode into organic semiconductor by analyzing electrochemical potential both in ferromagneticelectrode and organic semiconductors.The calculated result of this model shows effects of electrode’s spinpolarization, equilibrium value of polarons ratio, interfacial conductance, bulk conductivity of materials and electricalfield.It is found that we could get decent spin polarization with common ferromagnetic electrode by increasing equilibriumvalue of polarons ratio.We also find that large and matched bulk conductivity of organic semiconductor andelectrode, small spin-dependent interfacial conductance, and enough large electrical field are critical factors for increasingspin polarization.

引用

页码：741 / 746

页数：6

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