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首页> 外文期刊>Applied Surface Science >Surfactant and catalyst free facile synthesis of Al-doped ZnO nanorods - An approach towards fabrication of single nanorod electrical devices
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Surfactant and catalyst free facile synthesis of Al-doped ZnO nanorods - An approach towards fabrication of single nanorod electrical devices

机译：Al-掺杂ZnO纳米棒的表面活性剂和催化剂自由容纳合成 - 一种制造单纳米杆电气装置的方法

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摘要

Classical models illustrate the genesis of bottom-up techniques for synthesis of pristine ZnO or Al-doped ZnO nanoparticles via surfactant aided or hydrothermal chemistry, to constitute the fundamental modules of nanotechnology and nanodevices. The present study demonstrates a facile as well as surfactant and catalyst free route for synthesis of morphology controlled Al-doped ZnO nanorods. Morphological evaluation (via FESEM and TEM characterization) clearly verifies the successful synthesis of ZnO and Al-doped ZnO nanorods. Moreover, crystallographic and FTIR studies ratified presence of multiple different planes as well as phases of ZnO and Al-doped ZnO nanostructures, eventually confirming the doping process. Further, the alteration in mode of electronic transition and surface charge of ZnO nanorods post doping with Al was witnessed from its UV-visible or photoluminescence spectra and zeta potential measurements, respectively. Electrical measurements were performed on prepared Al-doped ZnO nanorods which were fabricated as single nanorod devices. Owing to substitutional and interstitial doping, the electrical conductivity of the devices was drastically enhanced after doping. Excellent electrical attribute of the nanorods when fabricated into single nanorod device was indicative of its potential to be deployed as next generation nano-biosensors or piezo-electric devices.
机译：经典模型说明了通过表面活性剂辅助或水热化学合成原始ZnO或Al掺杂的ZnO纳米颗粒的自下而上的技术的成因，以构成纳米技术和纳米型的基本模块。本研究表明，用于合成形态控制的Al掺杂的ZnO纳米棒的表面活性剂和催化剂免途径。形态学评价（通过FeSEM和TEM表征）清楚地验证了ZnO和Al掺杂ZnO纳米棒的成功合成。此外，结晶和FTIR研究批准了多个不同平面的存在以及ZnO和Al掺杂ZnO纳米结构的相，最终确认掺杂过程。此外，从其UV可见或光致发光光谱和Zeta电位测量分别目睹掺杂掺杂的ZnO纳米棒的电子转变和表面电荷模式的变化。在制备的Al掺杂的ZnO纳米棒上进行电测量，该ZnO纳米棒作为单纳米棒器件制造。由于替代和间质掺杂，掺杂后，器件的电导率大大提高。纳米棒制成的纳米棒的优异电气属性表示其潜力被展开为下一代纳米生物传感器或压电装置。

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