THE SMART TRICK OF INFRARED OPTICAL THAT NOBODY IS DISCUSSING

 5a]. The absorption edge for samples VT400 and VT700 happened at ~ 503 nm and ~ 470 nm. Then again, the transmittance lessened marginally with expanding substrate temperature within the NIR spectra range, which might be attributed to the massive particle dimensions and lack of porosity for VT700. Figure 5b shows the reflectance spectra