Zobrazeno 1 - 10
of 12
pro vyhledávání: '"G. A. Patrizi"'
Publikováno v:
Environmental Geology. 32:1-8
The Tyrrhenian resort of S. Marinella (central Italy) is subjected to significant anthropogenic pressures during the summer vacation period, a common situation all along the Italian coast. Located 65 km NW of Rome on the southern slopes of the Tolfa
Autor:
P. Silvestre, Mowafak Al-Jassim, L.M. Woods, Kim M. Jones, P. Thiagarajan, G. Y. Robinson, G. A. Patrizi
Publikováno v:
Journal of Electronic Materials. 23:1229-1233
Quantum well (QW) structures consisting of InGaAsP wells and InGaAsP barriers grown by gas-source molecular beam epitaxy have been examined by low temperature photoluminescence (PL) in order to evaluate the contributions of compositional fluctuations
Publikováno v:
Journal of Applied Physics. 79:7161-7163
We present an observation of the Wannier–Stark effect in a strained InGaAs/InGaP superlattice grown on a GaAs substrate. A blueshift of the effective absorption edge is observed in room and low‐temperature photocurrent and transmission measuremen
Autor:
X.P. Jiang, G. A. Patrizi, D.L. Coblentz, G. Y. Robinson, J. M. Vandenberg, S. Forouhar, Henryk Temkin, P. Thiagarajan, R. A. Logan
Publikováno v:
Applied Physics Letters. 65:1689-1691
We extend the deformation potential model developed previously for InGaAs/InP quantum wells to include strained quaternary wells, under compressive or tensile strain, and lattice‐matched (or also strained) quaternary barriers. This requires interpo
Autor:
H. Temkin, X.P. Jiang, J. M. Vandenberg, G. Y. Robinson, D. Coblentz, Ralph A. Logan, G. A. Patrizi, S. Forouhar, P. Thiagarajan
Publikováno v:
Proceedings of 1994 IEEE 6th International Conference on Indium Phosphide and Related Materials (IPRM).
We extend the phenomenological deformation potential strain model previously applied to InGaAs wells with InP barriers to quaternary wells and barriers. The model allows for any quaternary composition in the well or barrier, with the strain of either
Publikováno v:
Journal of Applied Physics. 74:1431-1433
Deep‐level transient spectroscopy has been used to characterize n‐type In0.48Ga0.52P grown by gas‐source molecular beam epitaxy. Only one electron trap was detected in both unintentionally doped and Si‐doped material, with the thermal emissio
Publikováno v:
Applied Physics Letters. 61:81-83
The Schottky barrier energies for both n‐type and p‐type materials have been measured for the wide band‐gap alloys InGaP and InGaAlP when lattice matched to GaAs. A gold metallization was used and the barrier energy was measured on chemically e
Publikováno v:
Electronics Letters. 29:535
Deep level transient spectroscopy has been used to characterise p-type In/sub 0.48/Ga/sub 0.52/P grown by gas-source molecular beam epitaxy. Three hole traps were detected in Be-doped material, with thermal emission energies of approximately 0.2-0.3,
Publikováno v:
Electronics Letters. 27:2363
Multiquantum well pin photodiodes have been fabricated using InGaP/GaAs grown by gas-source MBE. The room temperature photocurrent spectrum of the diodes exhibits strong excitonic absorption at wavelengths near 860 nm, and a large change in the photo