Blue and ultraviolet cathodoluminescence from Mn-doped epitaxial ZnO thin films

摘要: Combinatorial laser molecular-beam epitaxy method was employed to fabricate epitaxial Zn1−xMnxO thin films in a high throughput fashion. Local structures around Mn were investigated for these c-axis-oriented by fluorescence x-ray absorption fine structure measurements. It shown that substitutionally replaces Zn Zn1−xMnxO (x<0.22) films. Well-structured blue and ultraviolet cathodoluminescence peaks corresponding the intra-d-shell transitions of Mn2+ observed, especially smaller x. The luminescence is quenched rapidly as x increased. By comparing relative strength per mole with statistical probability isolated Mn2+, it concluded quick decrement increasing responsible severe suppression luminescence.