1. See, for example, Proceedings of the National Workshop on Low-Cost Polycrystalllne Silicon Solar Cells, Southern Methodist University, Dallas, Texas, May 18– 19, 1976.
2. H. C. Card and E. S. Yang, IEEE Trans. Electron Devices, Vol. ED-24, 397 (1977).
3. S. I. Soclof and P. A. Iles, Proc. 11th IEEE Photovoltaic Spec. Conf., (1975), p. 56.
4. R. B. Hilborn, Jr., and J. Lin, Proceedings of National Workshop on Low-Cost Polycrystalline Silicon Solar Cells. Southern Methodist University, Dallas, Texas, May 18–19 (1976), p. 246.
5. H. J. Hovel, Semiconductors and Semimetals, Vol. 11, Solar Cells, Academic Press, New York, 1975, p. 107.