Physica B: Condensed Matter ( IF 2.8 ) Pub Date : 2020-06-01 , DOI: 10.1016/j.physb.2020.412256 Cai-Qin Luo , Lok-Ping Ho , Francis Chi-Chung Ling
Systematic Raman spectroscopic study was conducted on the wurtzite (002) Sb-doped ZnO films grown by pulsed laser deposition with different Sb doping levels and annealed at different temperatures, with the undoped, Cu-doped and Ga-doped ZnO films for comparison. Three additional Raman modes 235 cm−1, 510 cm−1 and 534 cm−1 were observed only in the Sb-doped ZnO samples but not in the other controls. The vibration mode 235 cm−1was associated with the SbZn-related shallow donor, which was the origin of the n+-conductivity. The 510 cm−1 vibrational mode has been associated with HO in previous literature. However in the current study, the correlation between its intensity and the H abundance was not observed. The 534 cm−1 Raman mode was associated with a Sb-related defect. The variation of the intensities of the Raman modes 235 cm−1 and 510 cm−1 upon annealing and change of Sb composition were discussed.
中文翻译:
ZnO:Sb薄膜拉曼光谱中其他模态的起源
对通过脉冲激光沉积以不同的Sb掺杂水平生长并在不同温度下退火的纤锌矿(002)掺杂Sb的ZnO膜进行了系统拉曼光谱研究,并与未掺杂,Cu掺杂和Ga掺杂的ZnO膜进行了比较。三个额外的拉曼模式235厘米-1,510厘米-1和534厘米-1只观察到的锑掺杂的ZnO样品中但不存在于其他控件。235 cm -1的振动模式与Sb Zn相关的浅施主相关,这是n +导电性的起源。510 cm -1振动模式与H O有关在以前的文献中。然而,在目前的研究中,未观察到其强度与H丰度之间的相关性。534 cm -1拉曼模式与Sb相关缺陷有关。讨论了拉曼模式235 cm -1和510 cm -1在退火和Sb组成变化时强度的变化。