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dc.contributor.author嚴仕君en_US
dc.contributor.authorYen, Shin-Chunen_US
dc.contributor.author安惠榮en_US
dc.contributor.authorAhn, Hyeyoungen_US
dc.date.accessioned2014-12-12T02:41:11Z-
dc.date.available2014-12-12T02:41:11Z-
dc.date.issued2013en_US
dc.identifier.urihttp://140.113.39.130/cdrfb3/record/nctu/#GT070150603en_US
dc.identifier.urihttp://hdl.handle.net/11536/74697-
dc.description.abstractIn this thesis, the terahertz time-domain spectroscopy (THz-TDS), which is an optical and non-contact method, was utilized to elucidate the complex THz conductivity and dielectric responses of thin Au film and Ag nanowires. During the growth of thin Au films, we observed the characteristic crossover from an insulator behavior to a conductor behavior via the percolation transition. From the divergent behavior of carrier scattering time and the increase of persistence of velocity parameter, the critical film thickness at which crossover from Drude to non-Drude behavior of THz conductivity occurs could be determined. Meanwhile, for metallic nanostructures, it is essential to understand their thermal stability during the growth and device fabrication process. We have studied the thermal stabilities of ohmic contacts in silver nanowire (NW) films by measuring both sheet resistance and THz conductivity up to 200oC. We compared the thermal stability of as-grown AgNW films with that of AgNW with a graphene overlayer and found that graphene can effectively dissipate the heat and improve the thermal stability of AgNW films.zh_TW
dc.description.abstractIn this thesis, the terahertz time-domain spectroscopy (THz-TDS), which is an optical and non-contact method, was utilized to elucidate the complex THz conductivity and dielectric responses of thin Au film and Ag nanowires. During the growth of thin Au films, we observed the characteristic crossover from an insulator behavior to a conductor behavior via the percolation transition. From the divergent behavior of carrier scattering time and the increase of persistence of velocity parameter, the critical film thickness at which crossover from Drude to non-Drude behavior of THz conductivity occurs could be determined. Meanwhile, for metallic nanostructures, it is essential to understand their thermal stability during the growth and device fabrication process. We have studied the thermal stabilities of ohmic contacts in silver nanowire (NW) films by measuring both sheet resistance and THz conductivity up to 200oC. We compared the thermal stability of as-grown AgNW films with that of AgNW with a graphene overlayer and found that graphene can effectively dissipate the heat and improve the thermal stability of AgNW films.en_US
dc.language.isoen_USen_US
dc.subject兆赫波zh_TW
dc.subject銀奈米線zh_TW
dc.subject石墨烯zh_TW
dc.subjectTHen_US
dc.subjectAg NWen_US
dc.subjectGrapheneen_US
dc.title利用同調兆赫光譜研究金屬薄膜的電性轉換及銀奈米線薄膜的熱穩定性zh_TW
dc.titleTHz Spectroscopy Studies of Percolational Transition in Thin Gold Films and Thermal Stability of Silver Nanowire Filmsen_US
dc.typeThesisen_US
dc.contributor.department顯示科技研究所zh_TW
Appears in Collections:Thesis