Infrared spectroscopy investigation of various plasma-deposited polymer films irradiated with 170 keV He~+ ions

摘要

This work illustrates the advantages of using p-polarized radiation at an incidence angle of 70° in contrast to the conventional unpolarized beam at normal (or near-normal) incidence for the infrared spectroscopic study of polycarbosilane, polysilazane and polysiloxane thin films synthesized by plasma enhanced chemical vapor deposition (PECVD) and subsequently irradiated with 170 keV He~+ ions at fluences from 1 x 10~(14) to 1 x 10~(16) cm~(-2). Several bands not seen using the conventional mode could be observed in the polarized mode.