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首页> 外文会议>Physics and Technology of Sensors (ISPTS), 2012 1st International Symposium on >CdO and CdO-ZnO composite nanowires: Synthesis, characterization and ethanol gas response
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CdO and CdO-ZnO composite nanowires: Synthesis, characterization and ethanol gas response

机译：CdO和CdO-ZnO复合纳米线：合成，表征和乙醇气体响应

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摘要

A pure and ZnO added CdO thin films are prepared by chemical bath deposition to study their ethanol sensing properties. The depositions were carried out in a highly alkaline condition where in cadmium acetate was used as a source of cadmium while zinc acetate was added as the source of Zn inclusion. These films were subsequently annealed at 723K and studied for its morphological, optical and gas sensing response to understand the effect of ZnO addition. The optical response for the composite film interestingly depicted the existence of separate absorption signature for CdO and ZnO in visible region at around 550 nm and 360nm respectively, thereby confirming the formation of composite structure. The smooth surfaced CdO nano-wires apparently got transformed in to beaded nano wires with the addition of ZnO. The overall diameter of the CdO wires decreased from around 60 nm to approximately 40 nm for CdO-ZnO composite films. This has remarkably enhanced the ethanol gas sensing response from 39% to 61% for the CdO-ZnO composite thin film.
机译：通过化学浴沉积制备纯的和添加ZnO的CdO薄膜，以研究其乙醇感测特性。沉积在高碱性条件下进行，其中乙酸镉用作镉的源，而乙酸锌用作锌夹杂物的源。随后将这些薄膜在723K退火，并对其形态，光学和气体感应响应进行研究，以了解ZnO添加的影响。有趣的是，复合膜的光学响应描绘了分别在550 nm和360nm附近的可见光区域中CdO和ZnO的独立吸收特征的存在，从而证实了复合结构的形成。添加ZnO后，表面光滑的CdO纳米线显然转变为珠状纳米线。对于CdO-ZnO复合膜，CdO线的总直径从约60nm降低至约40nm。对于CdO-ZnO复合薄膜，这将乙醇气体感测响应从39％显着提高到了61％。

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