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首页> 外文期刊>Journal of Materials Research >Influence of selenium vapor postannealing on the electrical transport properties of PbSe-WSe2 nanolaminates
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Influence of selenium vapor postannealing on the electrical transport properties of PbSe-WSe2 nanolaminates

机译：硒蒸气后退火对PbSe-WSe2纳米层压板电输运性能的影响

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摘要

The influence of annealing time and annealing temperature under controlled partial pressure of selenium on the in-plane electrical transport properties of specimens of [(PbSe)_(0.99)]_1[WSe_2] _1 turbostratic nanolaminates was studied. The annealing treatments were found to be very effective in reducing carrier concentrations and improving carrier mobility in the annealed films, which is attributed to the reduction of compositional and structural defects. As a result, room temperature Hall mobilities greater than 60 cm2 V~(-1)-s~(-1) are observed in spite of the small in-plane domain sizes (on the order of 10 nm) that are related to the turbostratic disorder. The technique appears promising for decreasing the concentration of kinetically trapped defects in these and related self-assembled nanostructures, a key challenge to evaluating the expected potential for controlling electrical and thermal transport properties via designed nanostructure in these and related materials.
机译：研究了硒的分压控制下的退火时间和退火温度对[（PbSe）_（0.99）] _ 1 [WSe_2] _1层状纳米层板样品的面内电输运性能的影响。发现退火处理在降低退火膜中的载流子浓度和改善载流子迁移方面是非常有效的，这归因于组成和结构缺陷的减少。结果，尽管与电极表面尺寸相关的面内畴尺寸小（约10 nm），但观察到的室温霍尔迁移率仍大于60 cm2 V〜（-1）-s〜（-1）。涡轮层性疾病。该技术似乎有望降低这些及相关自组装纳米结构中的动力学陷阱缺陷的浓度，这是评估通过设计这些及相关材料中的纳米结构来控制电和热传输性质的预期潜力的关键挑战。

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  • 来源
    《Journal of Materials Research》 |2011年第15期|p.1866-1871|共6页
  • 作者

    Qiyin Lin; Sara Tepfer; Colby Heideman; Clay Mortensen; Ngoc Nguyen; Paul Zschack; Matt Beekman; David C. Johnson;

  • 作者单位

    Department of Chemistry, University of Oregon, Eugene, Oregon, 97403-1205;

    Department of Chemistry, University of Oregon, Eugene, Oregon, 97403-1205;

    Department of Chemistry, University of Oregon, Eugene, Oregon, 97403-1205;

    Department of Chemistry, University of Oregon, Eugene, Oregon, 97403-1205;

    Department of Chemistry, University of Oregon, Eugene, Oregon, 97403-1205;

    Advanced Photon Source, Argonne National Laboratory, Argonne, Illinois, 60439;

    Department of Chemistry, University of Oregon, Eugene, Oregon, 97403-1205;

    Department of Chemistry, University of Oregon, Eugene, Oregon, 97403-1205;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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