Fabrication and photoelectrical characteristics of ZnO nanowire field-effect transistors

The fabrication and photoelectrical characteristics of suspended ZnO nanowire (NW) field-effect transistors (FETs) are presented. Single-crystal ZnO NWs are synthesized by a hydrothermal method. The fabricated FETs exhibit excellent performance. When Vds=2.5 V, the peak transconductance of the FETs...

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Published inJournal of semiconductors Vol. 30; no. 8; pp. 60 - 62
Main Author 付晓君 张海英 郭常新 徐静波 黎明
Format Journal Article
LanguageEnglish
Published IOP Publishing 01.08.2009
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ISSN1674-4926
DOI10.1088/1674-4926/30/8/084002

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Abstract The fabrication and photoelectrical characteristics of suspended ZnO nanowire (NW) field-effect transistors (FETs) are presented. Single-crystal ZnO NWs are synthesized by a hydrothermal method. The fabricated FETs exhibit excellent performance. When Vds=2.5 V, the peak transconductance of the FETs is 0.396 μS, the average electron mobility is 50.17 cm2/(V·s), the resistivity is 0.96 × 102 Ω·cm at Vgs = 0 V, and the current on/off ratio (Ion/Ioff) is approximately 105. ZnO NW-FET devices exposed to ultraviolet radiation (2.5 μW/cm2) exhibit punch-through and threshold voltage (Vth) shift (from-0.6 V to +0.7 V) and a decrease by almost half of the source-drain current (Ids, from 560 nA to 320 nA) due to drain-induced barrier lowering. Continued work is underway to reveal the intrinsic properties of suspended ZnO nanowires and to explore their device applications.
AbstractList The fabrication and photoelectrical characteristics of suspended ZnO nanowire (NW) field-effect transistors (FETs) are presented. Single-crystal ZnO NWs are synthesized by a hydrothermal method. The fabricated FETs exhibit excellent performance. When Vds=2.5 V, the peak transconductance of the FETs is 0.396 μS, the average electron mobility is 50.17 cm2/(V·s), the resistivity is 0.96 × 102 Ω·cm at Vgs = 0 V, and the current on/off ratio (Ion/Ioff) is approximately 105. ZnO NW-FET devices exposed to ultraviolet radiation (2.5 μW/cm2) exhibit punch-through and threshold voltage (Vth) shift (from-0.6 V to +0.7 V) and a decrease by almost half of the source-drain current (Ids, from 560 nA to 320 nA) due to drain-induced barrier lowering. Continued work is underway to reveal the intrinsic properties of suspended ZnO nanowires and to explore their device applications.
Author 付晓君 张海英 郭常新 徐静波 黎明
AuthorAffiliation Institute of Microelectronics, Chinese Academy of Sciences, Beijing 100029, China Department of Physics, University of Science and Technology of China, Hefei 230026, China
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SubjectTerms 光电特性
制备
场效应晶体管
场效应管
弗吉尼亚州
氧化锌
水热法合成
纳米线
Title Fabrication and photoelectrical characteristics of ZnO nanowire field-effect transistors
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