کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1688625 1518973 2013 4 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Electron field emission from the semimetallic TiO2 nanotube arrays
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد سطوح، پوشش‌ها و فیلم‌ها
پیش نمایش صفحه اول مقاله
Electron field emission from the semimetallic TiO2 nanotube arrays
چکیده انگلیسی


• Semimetallic TiO2 nanotube arrays are formed by a carbonization treatment.
• Field emission of semimetallic TiO2 nanotube arrays has been first investigated.
• A low turn-on field of 3.0 V/μm and a threshold field of 7.0 V/μm are obtained.
• This turn-on field value is enough for potential use in field emission devices.

To enhance field-emission (FE) properties, as-prepared TiO2 nanotube arrays (TNAs) successfully transformed from semiconductor into semimetal by a carbonization treatment under an argon/acetylene flux at 750 °C. After semimetallic transformation, the TNAs maintain tubular morphology, however, their surface become rougher. Especially, their electronic structures are significantly improved. A low turn-on field of 3.0 V/μm and a threshold field of 7.0 V/μm are obtained. Such improvements of FE properties can be mainly attributed to the enhancements of electrical property and rough surface morphology.

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Vacuum - Volume 96, October 2013, Pages 18–21
نویسندگان
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