Effects of Mg concentration on solubility and chemical state of N in N-doped MgZnO alloy.
Solubility and chemical state of N in an N-doped Mg(x)Zn(1-x)O film were studied by using Raman and x-ray photoelectron spectroscopy. Three anomalous Raman peaks are observed at 272, 580, and 642 cm(-1), respectively, and are demonstrated to be only related to substitution of N for O site (N(O)) but not to substitution of N(2) for O site (N(2))(O). The solubility of the N(O) is dominated by Mg concentration and chemical potentials of N and O in growth condition. The chemical state of the N can change from coexistence of (N(2))(O) and N(O) to single (N(2))(O) with increasing Mg concentration.
State Key Laboratory of Superhard Materials and Department of Physics, Jilin University, Changchun 130023, People's Republic of China.
Lili
L
Gao
Bin
B
Yao
Bo
B
Liu
Li
L
Liu
Tong
T
Yang
Bingbing
B
Liu
Dezhen
D
Shen