TY - JOUR ID - TI - تاثير المعاملة الحرارية على الخواص الضوئية لاغشية اوكسيد الكروم الرقيقة AU - نضال نيسان جندو PY - 2015 VL - IS - 3 SP - 63 EP - 72 JO - Journal of College of Education مجلة كلية التربية SN - 18130380 AB - thin films of Cr2O3 are prepared on preheated glas substrate of (793 K) by chemical spray pyrolysis method . The effect of annealing at (873 K) for half an hour on optical properties was studied , the absorbance and transmittance spectra were recorded for these films for the wavelenghts (330-900 nm) . the energy gap of the direct allowed transition was calculated. It is found that the annealing cause an increasing in the energy gap.

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