نویسندگان

1 دانشگاه تربیت مدرس، دانشکده فنی و مهندسی، بخش مهندسی مواد، گروه سرامیک، تهران، ایران

2 دانشگاه صنعتی نایانگ، سنگاپور

چکیده

در این پژوهش گرافن سه بعدی با روش CVD حرارتی و با استفاده از الگوی نیکل در یک کوره لوله­ای سنتز شد. این روش شامل رشد گرافن بر روی الگوی نیکل با استفاده از گازهای Ar و H2 و پیش ماده کربنی اتانول و سپس حذف الگوی نیکل با استفاده از اچ شیمیایی می­باشد. در نهایت گرافن سنتز شده با استفاده از آنالیزهای XRD، SEM و Raman مورد مشخصه یابی قرار گرفت. هدایت الکتریکی و تابع کار آن نیز به ترتیب با روش­های Van der Pauw و UPS تعیین شدند. نتایج نشان دهنده تشکیل گرافن سه بعدی با تخلخل بسیار بالا و کیفیت مطلوب بودند. هدایت الکتریکی و تابع کار آن نیز به ترتیب s.cm-1 4 و eV 5 اندازه­ گیری شدند.
 
 

کلیدواژه‌ها

عنوان مقاله [English]

Synthesis and Electrical Properties Evaluation of Three-Dimensional Graphene

نویسندگان [English]

  • Fatemeh Dabir 1
  • Rasoul Sarraf-Mamoory 1
  • Nastaran Riahi-Noori
  • Edwin Hang Tong Teo 2
  • Manuela Loeblein 2

1 Tarbiat Modares University, Faculty of Engineering and Technology, Tehran, Iran

2 Nanyang Technological University, Singapore

چکیده [English]

In this research, three-dimensional graphene (3DG) was synthesized via thermal CVD method by using
nickel foam in a tube furnace. This method consists of graphene growth on the nickel foam using Ar and H2 gases and
ethanol carbon precursor, followed by removal of nickel foam by chemical etching. Finally, the synthesized graphene
was characterized by XRD, SEM and Raman analyses. The electrical conductivity and work function of 3DG were
determined by Van der Pauw method and UPS technique, respectively. The results indicated that the high porosity and
good quality three-dimensional graphene was formed. The electrical conductivity and work function of 3DG were
measured 4 s.cm-1 and 5 eV, respectively.

کلیدواژه‌ها [English]

  • Three-Dimensional Graphene
  • Electrical Conductivity
  • Work Function
  • CVD
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