FABRICATION OF p-TYPE ZnS WITH BLUE-Ag EMISSION BY TRIPLE-CODOPINGMETHOD

摘要

We have succeeded in the fabrication of low-resistivity p-type ZnS with blue-Ag emission by triple-codoping using Ag, a Zn-substituting species, In, a Zn-substituting species, and N, a S-substituting species. For the realization of blue-Ag emission at 436 nm, we use In species as co-activators with Ag activators. For the control of conduction type to obtain p-type ZnS thin films, we introduce N species as acceptors into ZnS codoped with the Ag and In. On the basis of the analysis of the experimental data and calculated results, we proposed a model for ZnS:(Ag, In, and N), in which some of the In species act as coactivalors with Ag activators and other In species act as reactive codopants with N acceptors.