Pop-in effects and dislocation nucleation of c-plane single-crystal ZnO by Berkovich nanoindentation

The CL results indicated that the near band-edge luminescence intensity falling exponentially with the applied load and reduced to about 5% of that obtained in pristine area as the maximum indentation load up to 100 mN, presumably due to the increased number of Berkovich nanoindentation-induced dislocations.170