Growth and characterization of GaInP unicompositional disorder-order-disorder quantum wells

Journal Article · Mon Aug 01 04:00:00 EDT 1994 · Applied Physics Letters; (United States)

DOI:https://doi.org/10.1063/1.112307· OSTI ID:7071041

Schneider, Jr, R P; Jones, E D; Follstaedt, D M ^[1]

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1. Sandia National Laboratories, Albuquerque, New Mexico 87185-0603 (United States)

Metalorganic vapor phase epitaxy (MOVPE) is used to grow unicompositional quantum-well (QW) structures, in which the QW and barrier layers are composed of ordered and disordered GaInP, respectively. Transmission electron dark-field micrographs reveal abrupt interfaces between highly ordered QWs and disordered barriers, with no evidence of defect formation. Low-temperature photoluminescence from the structures exhibits relatively broad emission peaks, with emission energy increasing with decreasing QW thickness. The dependence of emission energy on well thickness can be described by a finite square well model only when a type-II band alignment is taken for the heterostructure, in which the conduction band edge of the ordered GaInP QW lies about 135--150 meV below that of the disordered barrier material. These results demonstrate a high degree of control over the ordering process in MOVPE, such that quantum size effects can be realized solely through disorder-order phenomena. Further, the data provide strong support for a type-II (spatially indirect) recombination transition between ordered and disordered GaInP.

• DOE Contract Number: AC04-94AL85000
• OSTI ID: 7071041
• Journal Information: Applied Physics Letters; (United States), Journal Name: Applied Physics Letters; (United States) Vol. 65:5; ISSN APPLAB; ISSN 0003-6951
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
360602* -- Other Materials-- Structure & Phase Studies
ALLOY SYSTEMS
EPITAXY
GALLIUM COMPOUNDS
GALLIUM PHOSPHIDES
INDIUM COMPOUNDS
INDIUM PHOSPHIDES
INTERFACES
LUMINESCENCE
NUCLEAR POTENTIAL
ORDER-DISORDER TRANSFORMATIONS
PHASE TRANSFORMATIONS
PHOSPHIDES
PHOSPHORUS COMPOUNDS
PHOTOLUMINESCENCE
PNICTIDES
POTENTIALS
SQUARE-WELL POTENTIAL
TERNARY ALLOY SYSTEMS
VAPOR PHASE EPITAXY