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Determination of the work function of the Ni thin films by using $\gamma-FIB$ system  

오현주 (광운대학교 전자물리학과)
현정우 (광운대학교 전자물리학과)
이지훈 (광운대학교 전자물리학과)
임재용 (광운대학교 전자물리학과)
추동철 (광운대학교 전자물리학과)
최은하 (광운대학교 전자물리학과)
김태환 (광운대학교 전자물리학과)
강승언 (광운대학교 전자물리학과)
Publication Information
Journal of the Korean Vacuum Society / v.12, no.1, 2003 , pp. 16-19 More about this Journal
Abstract
Ni thin films on the p-InP (In) substrates were grown at room temperature by using the ion beam-assisted deposition. In order to determine the work function of the Ni thin films, the $\gamma$values were measured as functions of the acceleration voltages by using Ne, Ar, $N_2$. and Xe ion sources. The dependences of the values on various gases and on the acceleration voltages of the focused ion beam were obtained to determine the work function of the Ni thin films. The value of the work function of the Ni thin films grown on the p-InP (100) substrate was 5.8 eV ~ 5.85 eV. These results provide important information on the electronic properties of Ni thin films grown on p-InP (100) substrates at room temperature.
Keywords
p-InP(100); metal-semiconductor heterostructures; p-InP(100); Ni thin films; secondary electron emission coefficient; work function;
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