Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1790008 | Journal of Crystal Growth | 2015 | 15 Pages |
Abstract
The surface diffusivity and residence time were calculated by molecular dynamics simulations in order to solve the surface diffusion equations for selective-area growth. The calculations for CdTe/CdS material system were performed in substrates with Cd termination and S termination. The surface diffusivity and residence time were obtained at different temperatures (600Â K, 800Â K, 1000Â K, 1200Â K, and 1400Â K). The thermal activation energies were extracted from Arrhenius equation for each substrate termination. Thereafter, values obtained by molecular dynamics were used in a surface diffusion model to calculate the surface concentration profile of adatoms. Alternating the surface termination has the potential to achieve nanoscale selective-area growth without the need of a dielectric film as a mask.
Keywords
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
S. Almeida, E. Ochoa, J.J. Chavez, X.W. Zhou, D. Zubia,