نوع مقاله : پژوهشی
نویسندگان
1 کارشناسی ارشد، گروه مهندسی مواد، دانشکده فنی و مهندسی، دانشگاه بین المللی امام خمینی (ره)، قزوین، ایران، کدپستی: ٣٤١٤٨٩٦٨١٨.
2 دانشیار، گروه مهندسی مواد، دانشکده فنی و مهندسی، دانشگاه بین المللی امام خمینی (ره)، قزوین، ایران، کدپستی: ٣٤١٤٨٩٦٨١٨.
3 استاد، گروه مهندسی مواد، دانشکده فنی و مهندسی، دانشگاه بین المللی امام خمینی (ره)، قزوین، ایران، کدپستی: ٣٤١٤٨٩٦٨١٨.
چکیده
کلیدواژهها
موضوعات
عنوان مقاله [English]
نویسندگان [English]
In this paper, Graphene quantum dots are zero-dimensional nanostructures of graphene whose size is less than 100 nm and contain one or more graphene layers. One of the essential features of these materials is the presence of graphene structure, which brings high crystallinity with a multiple carbon structure of SP2 type. Graphene quantum dots have many applications due to their unique structure and shape. This factor has caused various synthesis methods to be proposed for this substance. The present study synthesized graphene quantum dots at low cost and without needing special equipment by the thermal pyrolysis method. For this purpose, the Inorganic source of citric acid was used, and the effect of temperature on the final product was investigated with the help of infrared spectroscopy, and photoluminescence tests. The results showed that with increasing temperature, the size distribution of the synthesized particles became wider. As a result, the luminescent properties also changed, and the contribution of green light emission increased. The temperature of 220°C was determined as the optimum temperature for synthesizing quantum dot nanoparticles with blue emission.
کلیدواژهها [English]