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Structural and Optoelectronic Characteristics of Well-Aligned ZnO Nanorod Arrays for Photodiodes

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Abstract:

Structural and optoelectronic characteristics of the well-aligned ZnO nanorod arrays were achieved by means of X-ray diffraction, scanning electron microscopy, transmission electron microscopy, photoluminescence (PL) and micro-Raman spectroscopy. The results indicated that the well-aligned ZnO nanorod with wurtzite structure was preferred oriented in the [002] c-axis direction. ZnO nanorod-based Schottky-barrier photodiodes has been also fabricated and characterized. With an incident wavelength of 370 nm and 5 V applied bias, it was found that maximum photoresponsivity of the photodiode was 0.051 A/W, which corresponded to a quantum efficiency of 21%.

Keywords: LIQUID-PHASE-DEPOSITION; NANOROD; PHOTODIODES; PHOTOLUMINESCENCE; ZNO

Document Type: Research Article

DOI: https://doi.org/10.1166/jno.2010.1113

Publication date: 2010-12-01

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  • Journal of Nanoelectronics and Optoelectronics (JNO) is an international and cross-disciplinary peer reviewed journal to consolidate emerging experimental and theoretical research activities in the areas of nanoscale electronic and optoelectronic materials and devices into a single and unique reference source. JNO aims to facilitate the dissemination of interdisciplinary research results in the inter-related and converging fields of nanoelectronics and optoelectronics.
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