Publication Type |
Journal Article |
School or College |
College of Engineering |
Department |
Electrical & Computer Engineering; Materials Science & Engineering |
Creator |
Stringfellow, Gerald B. |
Other Author |
Lee, S.H.; Fetzer, C.Y.; Lee, D.H.; Seong, T.Y. |
Title |
Te doping of GaInP: ordering and step structure |
Date |
1999-04-01 |
Description |
The donor Te has been added to GaInP during organometallic vapor phase epitaxial growth using the precursor diethyltelluride. In agreement with previous studies, the addition of high Te concentrations leads to the elimination of the CuPt ordering observed in undoped layers. The degree of order is estimated from the low temperature photoluminescence peak energy to decrease from 0.5 at Te concentrations of 2 1017 cm 3 to 0 for Te concentrations of 6 1017 cm 3. This is verified by transmission electron diffraction studies, which show the elimination of the ½ 111 superlattice spots at high Te doping levels. A remarkable change in the surface structure is found to accompany this decrease in ordering: The surfaces become much smoother. Step bunching is observed to disappear for the vicinal GaAs substrates, misoriented from 001 by 3° in the B direction, and three-dimensional island or mound formation is eliminated for the singular 001 substrates. A qualitative model is presented explaining this behavior based on the effect of Te on the step structure and the bonding at step edges, both of which affect the adatom sticking at steps. |
Type |
Text |
Publisher |
American Institute of Physics (AIP) |
Volume |
85 |
Issue |
7 |
First Page |
3590 |
Last Page |
3596 |
Subject |
Epitaxial growth; Heterostructures; Growth parameters |
Subject LCSH |
Epitaxy; Metal organic chemical vapor deposition |
Language |
eng |
Bibliographic Citation |
Lee, S.H., Fetzer, C.Y., Stringfellow, G.B., Lee, D.H., & Seong, T.Y. (1999). "Te doping of GaInP: ordering and step structure." Journal of Applied Physics, 85(7), 3590-96. |
Rights Management |
(c)American Institute of Physics. The following article appeared in Lee, S.H., Fetzer, C.Y., Stringfellow, G.B., Lee, D.H., & Seong, T.Y., Journal of Applied Physics. 85(7), 1999 |
Format Medium |
application/pdf |
Format Extent |
121,302 bytes |
Identifier |
ir-main,1939 |
ARK |
ark:/87278/s6f76x63 |
Setname |
ir_uspace |
ID |
707029 |
Reference URL |
https://collections.lib.utah.edu/ark:/87278/s6f76x63 |