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Effects of hydrogen irradiation on the optical and electronic properties of site-controlled InGaAsN V-groove quantum wires
- Source :
- EMRS, pp. 556–560, 2013, info:cnr-pdr/source/autori:Felici, Marco; Polimeni, Antonio; Lavenuta, Giovanna; Tartaglini, Elena; De Luca, Marta; Capizzi, Mario; Notargiacomo, Andrea; Carron, Romain; Fekete, Dan; Gallo, Pascal; Dwir, Benjamin; Rudra, Alok; Kapon, Eli; Pettinari, Giorgio; Christianen, Peter C. M.; Maan, Jan C./congresso_nome:EMRS/congresso_luogo:/congresso_data:2013/anno:2013/pagina_da:556/pagina_a:560/intervallo_pagine:556–560, PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS VOL 10 NO 4
- Publication Year :
- 2013
- Publisher :
- Wiley-VCH-Verl.., Weinheim , Germania, 2013.
-
Abstract
- The properties of InGaAsN V-groove QWRs are assessed here by polarization-dependent photoluminescence (PL) and micro-magneto-PL. Both the polarization anisotropy of the QWR emission and the strong dependence of the diamagnetic shift on the orientation of the applied magnetic field confirm the 1D nature of the QWR excitons. Further, the possibility of passivating N impurities by H irradiation is used to estimate the N content (x) in the QWRs by turning off the effects of N incorporation. Both the H-induced blueshift of the QWR emission (70 meV) and the measured value of the electron effective mass are consistent with x similar to 1%. Nitrogen is also found to enhance the In intake in the QWR, likely due to the strain reduction resulting from the smaller lattice parameter of the InGaAsN alloy. Such strain reduction is also responsible for the quick decay of the degree of linear polarization (rho) of the QWR emission with increasing temperature, indicating a small splitting between the QWR valence-band levels. In fully hydrogenated samples, conversely, rho remains roughly constant up to similar to 240 K, suggesting the recovery of a larger energy separation between the QWR hole states upon N passivation. (C) 2012 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
- Subjects :
- optical properties
Photoluminescence
Materials science
Hydrogen
Passivation
v-groove quantum wires
hydrogen in semiconductors
dilute nitrides
chemistry.chemical_element
02 engineering and technology
Photochemistry
01 natural sciences
N incorporation
0103 physical sciences
V-groove quantum wires
Irradiation
010306 general physics
Polarization (electrochemistry)
Groove (engineering)
Quantum
Groove (music)
Electronic properties
Condensed matter physics
business.industry
Condensed Matter Physics
021001 nanoscience & nanotechnology
Nitrogen
chemistry
Optoelectronics
0210 nano-technology
business
Subjects
Details
- Language :
- English
- Database :
- OpenAIRE
- Journal :
- EMRS, pp. 556–560, 2013, info:cnr-pdr/source/autori:Felici, Marco; Polimeni, Antonio; Lavenuta, Giovanna; Tartaglini, Elena; De Luca, Marta; Capizzi, Mario; Notargiacomo, Andrea; Carron, Romain; Fekete, Dan; Gallo, Pascal; Dwir, Benjamin; Rudra, Alok; Kapon, Eli; Pettinari, Giorgio; Christianen, Peter C. M.; Maan, Jan C./congresso_nome:EMRS/congresso_luogo:/congresso_data:2013/anno:2013/pagina_da:556/pagina_a:560/intervallo_pagine:556–560, PHYSICA STATUS SOLIDI C: CURRENT TOPICS IN SOLID STATE PHYSICS VOL 10 NO 4
- Accession number :
- edsair.doi.dedup.....5a424d2d288922658260df2a36118817