FACULTATEA DE ŞTIINŢE REALE, ECONOMICE ŞI ALE MEDIULUI
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Browsing FACULTATEA DE ŞTIINŢE REALE, ECONOMICE ŞI ALE MEDIULUI by Subject "a semiconductor band gap width"
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Item Cercetarea spectrelor de transmisie şi absorbţie ale straturilor subţiri de tip ZnSxSe [Articol](USARB, 2015) Popa, MihailThe reflection and transmission spectra (in the range from 300nm to 1400nm) were recorded using a PMQ – II (Carl Zeiss, Jena) spectrophotometer. The absorption coefficient, was determined from transmission spectra. The values of optical band gap, Eg, have been determined by extrapolating the linear portions of curves (ahv)2 = f(hv) for (ahv)2 - 0. For the analised samples these values (Eg = 2.68 – 3.5eV) are in a good agreement with the values of band gap energy obtained for bulk crystals.Item Determinarea din spectrele de reflexie a lărgimii benzii interzise a compuşilor semiconductori de tip ZnSxSe [Articol](USARB, 2015) Popa, MihailSpectroscopic technique is very useful for characterising semiconducting materials. We demonstrate here a new method for determination the energy band gap of thin fims from reflectance data.