@article {78761,
	title = {Emergence of very broad infrared absorption band by hyperdoping of silicon with chalcogens},
	journal = {J. Appl. Phys.},
	volume = {113},
	number = {213501},
	year = {2013},
	author = {I. Umezu and J. M. Warrender and S. Charnvanichborikarn and A. Kohno and Williams, J. S. and M. Tabbal and D.G. Papazoglou and X.-C. Zhang and M. J. Aziz}
}
