1. W. E. Devaney, R. A. Mickelson, and W. S. Chen, in Proceedings of the 18th IEEE Photovoltaic Specialists Conference, Las Vegas, NV,1985, p. 1733.
2. J. Loferski, J. Sewchun, B. Roesler, R. Beaulieu, J. Plekoszeski, M. Gorska, and G. Chapman, in Proceedings of the 13th IEEE Photovoltaic Specialists Conference,1978, p. 190.
3. L. L. Kazmerski, M. Hallerdt, P. J. Ireland, R. A. Mickelson, and W. S. Chen, J. Vac. Sci. Technol. A 1, 395 (1983).
4. V. F. Gremenok, I. V. Bodnar, I. A. Victorov, D. D. Kryvalap, A. E. Hill, M. V. Yakushev, R. D. Pilhington, and R. D. Tomlinson, in Proceedings of the 14th European Photovoltaic Solar Energy Conference, Barcelona, Spain,1997, p. 2161.
5. C. Vinothini, IJETCAS 15–751 (2015).