Micro-structure analysis of He+ ion implanted KTP by TEM

Abstract

Micro-structure of high dose He-implanted x-cut KTP is investigated. Rutherford backscattering spectroscopy/channeling (RBS/Channeling) and transmission electron microscopy (TEM) are used to examine the structural and lattice damage properties in KTP after 200keV He+-implantation and following thermal annealing. Lattice crack, lattice disorder and He-bubble are observed in different implantation regions. The results show that strain induced by implantation is released through non-elastic lattice deformation in KTP. The implications of these observations for KTP thin film fabrication by smart-cut method are discussed.