Zobrazeno 1 - 10
of 139
pro vyhledávání: '"Pierre Petroff"'
Autor:
Hubert J. Krenner, Pierre Petroff
Publikováno v:
Solid State Communications. 149:1386-1394
This article reviews the fabrication, structural and optical properties of self-assembled In(Ga)As quantum posts. We introduce the growth mechanism and present the resulting structural properties and electronic structure which provides a direct route
Autor:
Stefan Seidl, Khaled Karrai, Pierre Petroff, Richard J. Warburton, Antonio Badolato, K. M. Weiss, Martin Kroner
Publikováno v:
physica status solidi (b). 246:795-798
Self-assembled semiconductor quan-tum dots (QDs) exhibit the remarkable spectral feature of optical resonance linewidths (1 3µeV)- far below the thermal energy (362µeV at 42K). [1]. The small linewidth corresponds to the long coherence time of the
Autor:
Per-Olof Holtz, Mats Larsson, Winston V. Schoenfeld, Pierre Petroff, L Arvid Larsson, Evgenii Moskalenko
Publikováno v:
Nano Letters. 9:353-359
We report on magneto-photoluminescence studies of InAs/GaAs quantum dots (QDs) of considerably different densities, from dense ensembles down to individual dots. It is found that a magnetic field applied in Faraday geometry decreases the photolumines
Autor:
Mats Larsson, Per-Olof Holtz, Winston V. Schoenfeld, Evgenii Moskalenko, Pierre Petroff, Karl Fredrik Karlsson
Publikováno v:
Microelectronics Journal. 39:331-334
A low-temperature micro-photoluminescence (μ-PL) investigation of InAs/GaAs quantum dots (QDs) exposed to a lateral external electric field is reported. It is demonstrated that the QDs PL signal could be increased several times by altering the exter
Publikováno v:
physica status solidi c. 3:3806-3810
We present photoluminescence spectra from single InAs/GaAs quantum dots embedded in a Schottky diode heterostructure. The pronounced Coulomb blockade can be exploited to change the exciton charge in discrete steps from +6e to -8e via an applied gate
Autor:
Jorge M. Garcia, Bo Monemar, Pierre Petroff, V. Donchev, Evgenii Moskalenko, Per-Olof Holtz, Winston V. Schoenfeld, Karl Fredrik Karlsson
Publikováno v:
Jorge M. Garcia
ResearcherID
Digital.CSIC. Repositorio Institucional del CSIC
instname
ResearcherID
Digital.CSIC. Repositorio Institucional del CSIC
instname
7 páginas, 5 figuras.-- PACS numbers: 78.67.Hc, 71.55.Eq, 73.50.Gr
It is demonstrated that the microphotoluminescence (μPL) spectrum of a single InAs/GaAs self-assembled quantum dot (QD) undergoes considerable changes when the primary laser ex
It is demonstrated that the microphotoluminescence (μPL) spectrum of a single InAs/GaAs self-assembled quantum dot (QD) undergoes considerable changes when the primary laser ex
Publikováno v:
Japanese Journal of Applied Physics. 45:L669-L672
We have investigated the Ga-flux dependence of growth morphology and optical properties of GaN quantum dots (QDs) in AlN(0001). The QDs formed either by Stranski–Krastanov (S–K) or autosurfactant modified S–K growth depending on the incident Ga
Autor:
David Gershoni, Brian D. Gerardot, Efrat Lifshitz, S. Alon-Braitbart, Pierre Petroff, Antonio Badolato, Nika Akopian, Leonid Fradkin, Eitan Ehrenfreund, S. Vilan, Eilon Poem
Publikováno v:
Physica E: Low-dimensional Systems and Nanostructures. 32:127-130
We fully characterize the fine spectral structure of neutral and negatively charged single microcavity quantum dot excitons, using polarization-sensitive magneto-photoluminescence spectroscopy. We show that the microcavity allows the simultaneous det
Autor:
Claude Weisbuch, Ines Meinel, Pierre Petroff, Aurelien David, Shuji Nakamura, Rajat Sharma, Frédéric S. Diana
Publikováno v:
Nano Letters. 6:1116-1120
We present a study of the light extraction from CdSe/ZnS core/shell colloidal quantum dot thin films deposited on quantum well InGaN/GaN photonic crystal structures. The two-dimensional photonic crystal defined by nanoimprint lithography is used to e
Autor:
Sangcheol Kim, Takeshi Ootsu, Tomohide Murase, Edward J. Kramer, Pierre Petroff, Frédéric S. Diana
Publikováno v:
Journal of Polymer Science Part B: Polymer Physics. 44:3227-3233
The encapsulation of the nanocrystalline manganese-doped zinc sulfide (ZnS:Mn) in poly(styrene-b-2vinylpyridine) (PS-PVP) diblock copolymers is reported. Below the critical micelle concentration in the absence of nanocrystals (NCs), inverse micelles