Observation Of Donor-Acceptor Pair Spectra In The Photoluminescence Of H- And Zn-Implanted Zno Single Crystals

Donor-acceptor (D-A) pair spectra have been observed in the photoluminescence radiative recombination of selected donor bound exciton complexes in zinc oxide (ZnO) single crystals that have been ion implantation doped with H and Zn atoms and subsequently annealed in a nitrogen (N-2) atmosphere at temperatures in the range of 700-800 degrees C. Observations of the D-A pair spectra are explained as the bound states of Hopfield's bound exciton complex model, in terms of the effective mass approximation of the wurtzitic ZnO energy band structure. (c) 2006 American Institute of Physics.