INFRARED OPTICAL NO FURTHER A MYSTERY

 5a]. The absorption edge for samples VT400 and VT700 happened at ~ 503 nm and ~ 470 nm. On the flip side, the transmittance lowered slightly with increasing substrate temperature inside the NIR spectra assortment, which could be attributed to the big particle size and deficiency of porosity for VT700. Figure 5b displays the reflectance