Jambura Physics Journal
Vol 3, No 2 (2021): October 2021

SYNTHESIS OF CARBON DOTS (CDS) AND DETERMINATION OF OPTICAL GAP ENERGY WITH TAUC PLOT METHOD

Jumardin Jumardin (Unknown)
Akhiruddin Maddu (Department of Physics, Mathematic and Natural Science of Faculty, IPB University,)
Koekoeh Santoso (Departement of Anatomy, Physiology and Pharmacology, Veterinary of Faculty, IPB University)
Isnaeni Isnaeni (Research Center for Physics, Indonesian Institute of Sciences)

Article Info

Publish Date
01 Nov 2021

Abstract

Carbon Dots (CDs) which have been synthesized using the laser ablation method show the presence of UV-Vis absorption in the wavelength range of 303 nm to 333 nm for absorbance and 495 nm to 503 nm for fluorescence. Changes in the time duration 1, 2, 3 hours of CDs resulted in changes in the optical energy gap. The optical energy gap valuesare distinguished by the type of indirect transition (n=2) is 3.40 eV (1 hour), 3.15 eV (2 hour), 2.85 eV (3 hour) and direct transition (n=1/2) is 2.58 eV (1 hour), 2.31 eV (2 hour), 1.70 eV (1 hour).

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Journal Info
Jambura Physics Journal
Website

Abbrev

jpj

Publisher

Universitas Negeri Gorontalo

Subject

Education Energy Materials Science & Nanotechnology Physics

Description

The Jambura Physics Journal (JPJ) is the official journal of Physics Department, Faculty Mathematics and Natural Science, Universitas Negeri Gorontalo. JPJ is a peer-reviewed article publish articles twice a year in April and October. The research article submitted to this online journal will be ...