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首页> 外文期刊>Nano letters >Polarization-sensitive nanowire photodetectors based on solution-synthesized CdSe quantum-wire solids
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Polarization-sensitive nanowire photodetectors based on solution-synthesized CdSe quantum-wire solids

机译：基于溶液合成的CdSe量子线固体的偏振敏感纳米线光电探测器

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Polarization-sensitive photodetectors are demonstrated using solution-synthesized CdSe nanowire (NW) solids. Photocurrent action spectra taken with a tunable white light source match the solution linear absorption spectra of the NWs, showing that the NW network is responsible for the device photoconductivity. Temperature-dependent transport measurements reveal that carriers responsible for the dark current through the nanowire solids are thermally excited across CdSe band gap. The NWs are aligned using dielectrophoresis between prepatterned electrodes using conventional optical photolithography. The photocurrent through the NW solid is found to be polarization-sensitive, consistent with complementary absorption (emission) measurements of both single wires and their ensembles. The range of solution-processed semiconducting NW materials, their facile synthesis, ease of device fabrication, and compatibility with a variety of substrates make them attractive for potential nanoscale polarization-sensitive photodetectors.
机译：使用溶液合成的CdSe纳米线（NW）固体展示了对偏振敏感的光电探测器。用可调白色光源拍摄的光电流作用谱与NW的溶液线性吸收谱相匹配，表明NW网络负责器件的光电导性。与温度有关的传输测量结果表明，负责通过纳米线固体的暗电流的载流子在CdSe带隙上被热激发。使用常规的光学光刻法，通过介电电泳在预先形成图案的电极之间对齐NW。发现通过NW固体的光电流对偏振敏感，这与单根导线及其集合体的互补吸收（发射）测量值一致。固溶处理的半导体NW材料的范围，它们的简便合成，易于制造的设备以及与各种基板的兼容性，使其对于潜在的纳米级偏振敏感光电探测器具有吸引力。

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