Photoconductivity of Single-crystalline Selenium Nanotubes

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dc.creatorLiu, Peng
dc.creatorMa, Yurong
dc.creatorCai, Weiwei
dc.creatorWang, Zhenzhong
dc.creatorQi, Limin
dc.creatorChen, Dongmin
dc.date2007-02-05
dc.date.accessioned2026-07-07T09:45:07Z
dc.date.available2026-07-07T09:45:07Z
dc.descriptionPhotoconductivity of single-crystalline selenium nanotubes (SCSNT) under a range of illumination intensities of a 633nm laser is carried out with a novel two terminal device arrangement at room temperature. It's found that SCSNT forms Schottky barriers with the W and Au contacts, and the barrier height is a function of the light intensities. In low illumination regime below 1.46x10E-4 muWmum-2, the Au-Se-W hybrid structure exhibits sharp switch on/off behavior, and the turn-on voltages decrease with increasing illuminating intensities. In the high illumination regime above 7x10E-4 muWmum-2, the device exhibits ohmic conductance with a photoconductivity as high as 0.59Ohmcm-1, significantly higher that reported values for carbon and GaN nanotubes. This finding suggests that SCSNT is potentially a good photo-sensor material as well we a very effective solar cell material.
dc.description12pages including 5 figures, submitted to Nanotechnology
dc.identifierhttps://arxiv.org/abs/cond-mat/0702088
dc.identifierhttp://arxiv.org/abs/cond-mat/0702088
dc.identifierdoi:10.1088/0957-4484/18/20/205704
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/163099
dc.subjectMaterials Science
dc.titlePhotoconductivity of Single-crystalline Selenium Nanotubes
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