Initial Study on Thin Film Preparation of Carbon Nanodots Composites as Luminescence Material

6th Asian Physics Symposium

Iskandar, F.^1,2 ; Aimon, A.H.^1 ; Akmaluddin, A.R.^1 ; Nuryadin, B.W.^3 ; Abdullah, M.^1

Department of Physics, Institut Teknologi Bandung, Bandung

40132, Indonesia^1

Research Center for Nanoscience and Nanotechnology, Institut Teknologi Bandung, Bandung

40132, Indonesia^2

Department of Physics, Faculty of Science and Technology, UIN Sunan Gunung Djati, Bandung

40614, Indonesia^3

关键词: Carbon nanodots;    Glass substrates;    Luminescence material;    Microwave assisted heating;    Nitrogen sources;    Phosphor materials;    Production process;    Spin-coating method;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/739/1/012010/pdf
DOI  :  10.1088/1742-6596/739/1/012010

来源: IOP

【 摘 要 】

Nowadays, the developments of phosphors materials require elements without noble metals and simple production process. Carbon nanodots (C-dots) are one of phosphor materials with wide range of emission band, and high biocompatibility. In this research thin film carbon nanodots composite have been prepared by spin coating method. Prior deposition, powder carbon nanodots were synthesized from a mixture of commercial urea as the nitrogen sources and citric acid as a carbon source by using hydrothermal and microwave-assisted heating method. The prepared powder was dispersed in transparent epoxy resin and then coated on glass substrate. The photoluminescence result for sample with 0.035 g citric acid exhibited an intense, single, homogeneous and broad spectrum with yellowish emission upon excitation at 365 nm. The Fourier Transform Infrared Spectroscopy (FTIR) result showed the existences of C=C, C-H, C=O, N-H and O-H functional groups which confirmed the quality of the sample. Further, based on UV-Vis measurement, the prepared thin film was highly transparent (transmittance 90%) with estimated film thickness around 764 nm. This result may open an opportunity for optoelectronic devices.