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Erschienen in:
03.02.2018
Luminescent down-shifting aluminosilicate nanocomposites: an efficient UVA shielding material for photovoltaics
Erschienen in: Journal of Materials Science: Materials in Electronics | Ausgabe 8/2018
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Abstract
In this investigation polycarbonate (PC) nanocomposites (NC) films have been fabricated with varying amounts of alluminosilicate nanotubes (HNT) using solvent intercalation method. On the basis of UV–Vis experiments, the effect of HNT on absorption coefficient spectra of PC/HNT NC films is demonstrated. A distinct reduction of band gap energy is being a result of HNT doping which leads to the formation of charge transfer complexes (CTC) and π-conjugation between HNT and PC matrix. Further absorption bands and absorption edge parameters such as Urbach energy (Eu) and energy gap (Eg) are used to evaluate the changes in the NC films. The structural and morphological aspects of PC/HNT NC were evaluated by Fourier transform infrared spectroscopy, X-Ray diffraction studies and scanning electron microscopy. Absorbance and transmittance spectra of luminescent PC/HNT NC films reveals the conversion of higher energy UVA light in to lower energy visible light which leads to efficient photovoltaic application.