npsm 새물리 New Physics : Sae Mulli

pISSN 0374-4914 eISSN 2289-0041
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Research Paper

New Phys.: Sae Mulli 2021; 71: 11-15

Published online January 29, 2021 https://doi.org/10.3938/NPSM.71.11

Copyright © New Physics: Sae Mulli.

Fabrication and Properties of Carbon Quantum dot and Carbon Quantum dot Film Using Fallen Leaves Through Hydrothermal Method

Sung Jun PARK1, Hyun Kyoung YANG1*, Byung Kee MOON2, Minseok KWAK3, Chang Woo KIM4

1Interdisciplinary Graduate Program of Artificial Intelligence on Computer, Electronic and Mechanical Engineering, Pukyong National University, Busan 48547, Korea

2Department of Physics, Pukyong National University, Busan 48513, Korea
3Department of Chemistry, Pukyong National University, Busan 48513, Korea
4Department of Graphic Arts Information Engineering, Pukyong National University, Busan 48547, Korea

Correspondence to:hkyang@pknu.ac.kr

Received: November 18, 2020; Revised: December 8, 2020; Accepted: December 9, 2020

Abstract

Carbon quantum dots were synthesized using the hydrothermal method with fallen leaves as carbon sources. The chemical structure, particle size and morphology, and luminescent characteristics of the prepared carbon quantum dots were investigated. The particle size and morphology of synthesized carbon dots were observed by using TEM (transmission electron microscopy). The ligand and chemical structures of the carbon quantum dots were confirmed by using FT-IR (Fourier transform infrared spectroscopy). The elemental components of the carbon quantum dots were investigated by using XPS (X-ray photoelectron spectroscopy). The photoluminescence spectrum of carbon quantum dots showed strong cyan fluorescence around 493 nm under 400-nm excitation. A UV blocking film for preventing eye and body damage was fabricated by using the prepared carbon quantum dots. Consequently we confirm the applicability of carbon dot films for shielding from UV light.

Keywords: Carbon dots, Hydrothermal method, Film

Figures

Fig. 1. Synthesis of carbon quantum dots using fallen leaves.

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