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Electrical transport, Meyer-Neldel rule and oxygen sensitivity of Bi_2S_3 nanowires

机译：Bi_2S_3纳米线的电输运，Meyer-Neldel规则和氧敏感性

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The electrical properties of 61283 nanowire bundles were investigated. The nanowires were synthesized using a solventless reaction involving a single-source bismuth thiolate precursor and stabilizing organic ligands. For electrical testing, nanowires were dispersed in solution and drop cast onto a substrate with gold contact pads patterned by electron beam lithography techniques (EBL). Electrical connections were made by depositing platinum interconnect lines between the nanowires and the gold pads by focused ion beam (FIB) chemical vapour deposition. Current-voltage (/-V) curves were measured under nitrogen as a function of temperature. The data revealed activated transport that followed a Meyer-Neldel relationship. Annealing under vacuum decreased the nanowire resistance by nearly four orders of magnitude. The annealed nanowires followed an inverse Meyer-Neldel relationship. Illumination with UV light increased the current, and air exposure decreased the current under constant applied bias.
机译：研究了61283纳米线束的电性能。纳米线是使用无溶剂反应合成的，该反应涉及单源硫醇铋铋前体和稳定的有机配体。为了进行电气测试，将纳米线分散在溶液中，并通过电子束光刻技术（EBL）将金线接触垫滴铸到基材上。通过聚焦离子束（FIB）化学气相沉积法在纳米线和金焊盘之间沉积铂互连线来建立电连接。在氮气下测量电流-电压（/ -V）曲线随温度的变化。数据揭示了遵循Meyer-Neldel关系的激活传输。真空退火将纳米线电阻降低了近四个数量级。退火的纳米线遵循迈耶-内德尔反比关系。在持续施加偏压的情况下，用紫外线照射会增加电流，而暴露于空气会降低电流。

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