Effect of uniaxial stress on substitutional Ni in ZnO

The influence of uniaxial stress on the electronic T13(F)→T23(F) transitions of Ni2+Ni2+ (d8) in ZnO at 4216, 4240, and 4247 cm−1 is studied. It is shown that the split pattern and polarized properties of IR absorption lines are consistent with a dynamic Jahn–Teller effect in the T23(F) state of the defect.

► The influence of uniaxial stress on substitutional Ni in ZnO is studied.
► A stress Hamiltonian of the defect was constructed.
► Split pattern is consistent with a dynamic Jahn–Teller effect of Ni.