Influence of lithium substitution on the orange emission in manganese doped ZnO thin films

Abstract

Lithium (Li) and Manganese (Mn) co-doped zinc oxide (ZnO) thin films have been deposited on glass substrates by sol–gel spin-coating technique. The influence of the defect states on the orange emission has been studied by altering the defect chemistry through appropriate Li substitution. The results of the defect related fluorescence in the blue and green regions have been combined to elucidate comprehensively the defect-mediated energy transfer mechanism of orange emission in Li and Mn co-doped ZnO thin films.