科研之友
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摘要
CdO thin films with various molarities of doping of Aluminium have been prepared by spray pyrolysis method. The deposited CdO:Al films were characterized by studying their linear and non linear optical properties. Optical study shows 30 to 90% transparency depending upon the aluminium content in the films. The calculated values of absorption coefficient are in the order of 106 cm(-1). The value of direct band gap has been found to decrease from 2.4 to 2.15 eV and the value of indirect band gap also decrease from 2.3 to 1.92 eV with increase of Al doping concentration. The nonlinear optical absorption of Al-doped CdO films have been measured used the Z-scan technique at a wavelength 632.8 nm. The nonlinear optical absorption coefficient (beta) for 0.0001M, 0.0002M and 0.0003 are 4.82 x10(-3)m/W, 8.63 x10(-3)m/W and 10.77x10(-3)m/W respectively.
- 出版日期2015-10
