Intersubband Emitters: GaAs-based Quantum-Cascade Lasers

Dr. Lutz Geelhaar

Acting Director

Head of Department Epitaxy

Lutz Geelhaar

phone: +49 30 20377 359

room: 0714

email: geelhaar@pdi-berlin.de

 

Department: Epitaxy

Core research areas: Nanofabrication , III-V nanowires for optoelectronics

 

 

21 Author M. Oliva , G. Gao , E. Luna , L. Geelhaar , R. B. Lewis
Title

Axial GaAs/Ga(As,Bi) nanowire heterostructures

Source Nanotechnology , 30 , 425601 ( 2019 )
DOI : 10.1088/1361-6528/ab3209 | Download arXiv: 1903.11039 | 3086 Cite : Bibtex RIS
M. Oliva, G. Gao, E. Luna, L. Geelhaar, and R. B. Lewis

22 Author F. Bastiman , H. Küpers , C. Somaschini , V.G. Dubrovskii , L. Geelhaar
Title

Analysis of incubation time preceding the Ga-assisted nucleation and growth of GaAs nanowires on Si(111)

Source Phys. Rev. Mater. , 3 , 073401 ( 2019 )
DOI : 10.1103/PhysRevMaterials.3.073401 | Download arXiv: 1907.04249 | 3081 Cite : Bibtex RIS
F. Bastiman, H. Küpers, C. Somaschini, V.G. Dubrovskii, and L. Geelhaar

23 Author D. van Treeck , J. Ledig , G. Scholz , J. Lähnemann , M. Musolino , A. Tahraoui , O. Brandt , A. Waag , H. Riechert , L. Geelhaar
Title

Electroluminescence and current-voltage measurements of single (In,Ga)N/GaN nanowire light-emitting diodes in a nanowire ensemble

Source Beilstein J. Nanotechnol. , 10 , 1177 ( 2019 )
DOI : 10.3762/bjnano.10.117 | 3047 Cite : Bibtex RIS
D. van Treeck, J. Ledig, G. Scholz, J. Lähnemann, M. Musolino, A. Tahraoui, O. Brandt, A. Waag, H. Riechert, and L. Geelhaar

24 Author P. Schroth , M. Al Humaidi , L. Feigl , J. Jakob , A. Al Hassan , A. Davtyan , H. Küpers , A. Tahraoui , L. Geelhaar , U. Pietsch , T. Baumbach
Title

Impact of the Shadowing Effect on the Crystal Structure of Patterned Self-Catalyzed GaAs Nanowires

Source Nano Lett. , 19 , 4263 ( 2019 )
DOI : 10.1021/acs.nanolett.9b00380 | 3123 Cite : Bibtex RIS
P. Schroth, M. Al Humaidi, L. Feigl, J. Jakob, A. Al Hassan, A. Davtyan, H. Küpers, A. Tahraoui, L. Geelhaar, U. Pietsch, and T. Baumbach

25 Author J. Lähnemann , M. O. Hill , J. Herranz , O. Marquardt , G. Gao , A. Al Hassan , A. Davtyan , S. O. Hruszkewycz , M. V. Holt , C. Huang , I. Calvo-Almazán , U. Jahn , U. Pietsch , L. J. Lauhon , L. Geelhaar
Title

Correlated nanoscale analysis of the emission from wurtzite versus zincblende (In,Ga)As/GaAs nanowire core-shell quantum wells

Source Nano Lett. , 19 , 4448 ( 2019 )
DOI : 10.1021/acs.nanolett.9b01241 | Download arXiv: 1903.07372 | 3094 Cite : Bibtex RIS
J. Lähnemann, M. O. Hill, J. Herranz, O. Marquardt, G. Gao, A. Al Hassan, A. Davtyan, S. O. Hruszkewycz, M. V. Holt, C. Huang, I. Calvo-Almazán, U. Jahn, U. Pietsch, L. J. Lauhon, and L. Geelhaar

26 Author L. Mancini , M. Morassi , C. Sinito , O. Brandt , L. Geelhaar , H.G. Song , Y.H. Cho , N. Guan , A. Madouri , C. Barbier , L. Largeau , A. Babichev , F.H. Julien , L. Travers , F. Oehler , N. Gogneau , J.C. Harmand , M. Tchernycheva
Title

Optical properties of GaN Nanowires grown on chemical vapor deposited-Graphene

Source Nanotechnology , 30 , 214005 ( 2019 )
DOI : 10.1088/1361-6528/ab0570 | 3088 Cite : Bibtex RIS
L. Mancini, M. Morassi, C. Sinito, O. Brandt, L. Geelhaar, H.G. Song, Y.H. Cho, N. Guan, A. Madouri, C. Barbier, L. Largeau, A. Babichev, F.H. Julien, L. Travers, F. Oehler, N. Gogneau, J.C. Harmand, and M. Tchernycheva

27 Author M. Sobanska , Z. R. Zytkiewicz , G. Calabrese , L. Geelhaar , S. Fernández-Garrido
Title

Comprehensive analysis of the self-assembled formation of GaN nanowires on amorphous AlxOy: in situ quadrupole mass spectrometry studies

Source Nanotechnology , 30 , 154002 ( 2019 )
DOI : 10.1088/1361-6528/aafe17 | 3099 Cite : Bibtex RIS
M. Sobanska, Z. R. Zytkiewicz, G. Calabrese, L. Geelhaar, and S. Fernández-Garrido

28 Author H. Küpers , P. Corfdir , R. B. Lewis , T. Flissikowski , A. Tahraoui , H. T. Grahn , O. Brandt , L. Geelhaar
Title

Impact of outer shell structure and localization effects on charge carrier dynamics in GaAs/(In,Ga)As nanowire core-shell quantum wells

Source Phys. Status Solidi-Rapid Res. Lett. , 13 , 1800527 ( 2019 )
DOI : 10.1002/pssr.201800527 | 3033 Cite : Bibtex RIS
H. Küpers, P. Corfdir, R. B. Lewis, T. Flissikowski, A. Tahraoui, H. T. Grahn, O. Brandt, and L. Geelhaar

29 Author G. Calabrese , G. Gao , D. van Treeck , P. Corfdir , C. Sinito , T. Auzelle , A. Trampert , L. Geelhaar , O. Brandt , S. Fernández-Garrido
Title

Interfacial reactions during the molecular beam epitaxy of GaN nanowires on Ti/Al2O3

Source Nanotechnology , 30 , 114001 ( 2019 )
DOI : 10.1088/1361-6528/aaf9c5 | 3072 Cite : Bibtex RIS
G. Calabrese, G. Gao, D. van Treeck, P. Corfdir, C. Sinito, T. Auzelle, A. Trampert, L. Geelhaar, O. Brandt, and S. Fernández-Garrido

30 Author P. Corfdir , O. Marquardt , R. B. Lewis , C. Sinito , M. Ramsteiner , A. Trampert , U. Jahn , L. Geelhaar , O. Brandt , V. M. Fomin
Title

Excitonic Aharonov-Bohm oscillations in core-shell nanowires

Source Adv. Mater. , 31 , 1805645 ( 2019 )
DOI : 10.1002/adma.201805645 | 3041 Cite : Bibtex RIS
P. Corfdir, O. Marquardt, R. B. Lewis, C. Sinito, M. Ramsteiner, A. Trampert, U. Jahn, L. Geelhaar, O. Brandt, and V. M. Fomin

Contact

Prof. Dr. Holger T. Grahn

Head of Department 

+49 30 20377-318

htgrahn@pdi-berlin.de

Dr. Lutz Schrottke

Senior Scientist

+49 30 20377-339

lutz@pdi-berlin.de