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...
They are (i) the scale of the Tauc plot, and (ii) the method of extrapolation of the energy gap value to the x-axis. Apparently, these two additional factors influencing the bandgap value are not related to the nanomaterial’s synthesis technique, instrument measurement technique or other ...
It is established that direct extrapolation technique has the potential to either under - or over-estimate bandgap values, whereas the proper extrapolation method is promising for more reasonable values of optical energy gap.Jubu, P. R.Yam, F. K.Igba, V. M.Beh, K. P....