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Computation of Optical Energy Gap of Cu2O Thin Film: Theoretical Estimation

Authors: N.F. Habubi --- K.A. Mishjil --- H.G. Rashid --- B.G. Rasheed
Journal: Iraqi Journal of Applied Physics Letters الرسائل العراقية في الفيزياء التطبيقية ISSN: 1999656X Year: 2008 Volume: 1 Issue: 1 Pages: 21-23
Publisher: iraqi society for alternative and renewable energy sources and techniques الجمعية العراقية لمصادر وتقنيات الطاقة البديلة والمستجدة


Thin films of cuprous oxide Cu2O have been prepared using spraypyrolsis technique. Experimentally, the optical energy gap of Cu2O wasabout 2.2eV. To achieve and estimate an accurate Eg value, there wasproblem in the selection of exact tangent point. To overcome thisproblem, Newton-Raphson method and mean-value theorem were used.It was found that the mean-value theorem can predict correlated nearlysatisfactory Eg value than the other method.

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