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首页> 外文期刊>Organic Electronics >Photoinduced negative magnetoresistance in 6,13-bis(triisopropylsilylethynyl)-pentacene field-effect transistors
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Photoinduced negative magnetoresistance in 6,13-bis(triisopropylsilylethynyl)-pentacene field-effect transistors

机译：6,13-​​双（三异丙基甲硅烷基乙炔基）-并五苯场效应晶体管中的光致负磁电阻

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摘要

We report on photoinduced negative organic magnetoresistance in low external magnetic-fields (<100mT) in 6,13-bis(triisopropylsilylethynyl)-pentacene (TIPS-Pentacene) field-effect transistors. An external magnetic field does not influence the dark current of our device. In contrast, there is a significant increase in photocurrent when magnetic field is applied to the irradiated device, which leads to negative magnetoresistance. The magnetoresistance and photoresponse values are strongly correlated and both are influenced by applied voltages and irradiation intensity. We attribute the observed photoinduced negative magnetoresistance in TIPS-Pentacene field-effect transistors to the presence of electron-hole pairs under irradiation. The overall dissociation probability of electron-hole pairs rises under the influence of an external magnetic field, which leads to a higher number of free charge carriers.
机译：我们报告在6,13-​​双（三异丙基甲硅烷基乙炔基）-并五苯（TIPS-并五苯）场效应晶体管的低外部磁场（<100mT）中光诱导的负有机磁阻。外部磁场不会影响我们设备的暗电流。相反，当将磁场施加到被辐照的设备时，光电流显着增加，这导致负磁阻。磁阻值和光响应值密切相关，并且两者都受到施加电压和照射强度的影响。我们将在TIPS-并五苯场效应晶体管中观察到的光致负磁阻归因于辐射下电子-空穴对的存在。电子-空穴对的总解离概率在外部磁场的影响下升高，这导致更多的自由电荷载流子。

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  • 来源
    《Organic Electronics》 |2012年第3期|p.377-383|共7页
  • 作者

    Thomas Reichert; Tobat P.I. Saragi;

  • 作者单位

    Department of Mathematics and Science, Center for Interdisciplinary Nanostructure Science and Technology (CINSaT). University of Kassel, Heinrich-Plett-Strasse 40, D 34132 Kassel, Germany;

    Department of Mathematics and Science, Center for Interdisciplinary Nanostructure Science and Technology (CINSaT). University of Kassel, Heinrich-Plett-Strasse 40, D 34132 Kassel, Germany;

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  • 正文语种 eng
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  • 关键词

    photoinduced; TIPS-pentacene; organic magnetoresistance; organic field-effect transistors;

    机译：光诱导的TIPS-并五苯;有机磁阻有机场效应晶体管;

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