当前位置: X-MOL 学术Surf. Sci. › 论文详情
Our official English website, www.x-mol.net, welcomes your feedback! (Note: you will need to create a separate account there.)
Transformation of the InP(001) surface upon annealing in an arsenic flux
Surface Science ( IF 2.1 ) Pub Date : 2021-04-15 , DOI: 10.1016/j.susc.2021.121861
Dmitriy V. Dmitriev , Danil A. Kolosovsky , Tatyana A. Gavrilova , Anton K. Gutakovskii , Alexander I. Toropov , Konstantin S. Zhuravlev

We report experimental study of the transformation of the oxide-coated InP(001) surface during annealing in an arsenic flux. Using the RHEED method, it was shown that an InP1-хAsх layer is formed on the surface. The transformation of an oxidized surface occurs at a temperature higher at about 60°C than the transformation of an atomically clean surface. The activation energy Ea = 1.17 eV of the formation of an arsenic-containing layer was determined. The amount of arsenic substitution for phosphorus at different annealing temperatures was determined, which is 7% at an annealing temperature of 480°C and increases to 41% with an increase in the annealing temperature to 540°C. SEM analysis of surface reveals areas with high arsenic content (InAs islands). The size and density of such regions increases with an increase in the annealing temperature and at 540°C reaches 5.5 × 103 nm2 and 6 × 109 cm−2, respectively. However, despite the local inhomogeneities, the main surface area is covered with a uniform InPAs layer. The area covered with InAs islands occupies about 1.5% of the surface area at an annealing temperature of 540°C.



中文翻译:

InP(001)表面在砷熔剂中退火后的转变

我们报告了在砷熔剂退火过程中氧化覆膜的InP(001)表面转变的实验研究。使用RHEED方法,它表明在InP 1-х作为х在表面上形成的层。氧化表面的转变发生在比原子清洁表面的转变高约60°C的温度下。活化能E a 确定含砷层的形成= 1.17eV。确定了在不同退火温度下磷的砷替代量,其在480℃的退火温度下为7%,并且随着退火温度升高至540℃而增加至41%。表面的SEM分析显示砷含量高的区域(InAs岛)。这些区域的尺寸和密度随着退火温度的升高而增加,并且在540°C时分别达到5.5×10 3  nm 2和6×10 9  cm -2。, 分别。但是,尽管局部不均匀,主表面仍覆盖有均匀的InPAs层。在540°C的退火温度下,InAs岛覆盖的面积约占表面积的1.5%。

更新日期:2021-04-23
down
wechat
bug