TY - GEN
T1 - Integrated rotating-compensator polarimeter for real-time measurements and analysis of organometallic chemical vapor deposition
AU - Flock, K.
AU - Kim, S. J.
AU - Asar, M.
AU - Kim, I. K.
AU - Aspnes, D. E.
PY - 2004
Y1 - 2004
N2 - We describe a single-beam rotating-compensator rotating-sample spectroscopic polarimeter (RCSSP) integrated with an organometallic chemical vapor deposition (OMCVD) reactor for in-situ diagnostics and control of epitaxial growth, and report representative results. The rotating compensator generates Fourier coefficients that provide information about layer thicknesses and compositions, while sample rotation provides information about optical anisotropy and therefore surface chemistry. We illustrate capabilities with various examples, including the simultaneous determination of 〈ε〉 and α10 during exposure of (001)GaAs to TMG, the heteroepitaxial growth of GaP on GaAs, and the growth of (001)GaSb with TMG and TMSb. Using a recently developed approach for quantitatively determining thickness and dielectric function of depositing layers, we find the presence of metallic Ga on TMG-exposed (001)GaAs. The (001)GaSb data show that Sb deposition is self-limiting, in contrast to expectations. © 2004 Elsevier B.V. All rights reserved.
AB - We describe a single-beam rotating-compensator rotating-sample spectroscopic polarimeter (RCSSP) integrated with an organometallic chemical vapor deposition (OMCVD) reactor for in-situ diagnostics and control of epitaxial growth, and report representative results. The rotating compensator generates Fourier coefficients that provide information about layer thicknesses and compositions, while sample rotation provides information about optical anisotropy and therefore surface chemistry. We illustrate capabilities with various examples, including the simultaneous determination of 〈ε〉 and α10 during exposure of (001)GaAs to TMG, the heteroepitaxial growth of GaP on GaAs, and the growth of (001)GaSb with TMG and TMSb. Using a recently developed approach for quantitatively determining thickness and dielectric function of depositing layers, we find the presence of metallic Ga on TMG-exposed (001)GaAs. The (001)GaSb data show that Sb deposition is self-limiting, in contrast to expectations. © 2004 Elsevier B.V. All rights reserved.
UR - https://dx.doi.org/10.1016/j.tsf.2004.01.069
U2 - 10.1016/j.tsf.2004.01.069
DO - 10.1016/j.tsf.2004.01.069
M3 - Conference contribution
VL - 455-456
BT - Unknown book
ER -