کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1795897 | 1524485 | 2007 | 4 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Segregation and desorption of antimony in InP (0 0 1) in MOVPE Segregation and desorption of antimony in InP (0 0 1) in MOVPE](/preview/png/1795897.png)
We investigated the segregation of Sb on InP in metalorganic vapour phase epitaxy (MOVPE). A clean PH3 stabilized InP(0 0 1) surface is exposed to trimethyl antimony (TMSb) and then immediately overgrown with InP. For a single exposure and overgrowth cycle a self-organized InPSb double-quantum well (QW) is formed, one layer is at the Sb-treated surface and the other occurs after 50–150 nm overgrowth. This behaviour was found in situ by RAS and verified ex situ by SIMS and XRD. The separation of the second QW linearly depends on the growth temperature in a range from 520 to 580 °C. At temperatures above 580 °C the separation saturates due to desorption. We propose strain-induced surface melting to explain the double quantum well QW formation.
Journal: Journal of Crystal Growth - Volume 298, January 2007, Pages 159–162