PDI -> Staff ->

Dr. Lutz Geelhaar

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

 

 

11 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 Nanotechnol. , 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

12 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 RRL , 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

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

14 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

15 Author Ali Al-Hassan , Arman Davtyan , H. Küpers , R. B. Lewis , Danial Bahrami , F. Bertram , Genziana Bussone , C. Richter , L. Geelhaar , Ullrich Pietsch
Title

Complete structural and strain analysis of single GaAs/(In,Ga)As/GaAs core-shell-shell nanowires by means of in-plane and out-of-plane x-ray nano-diffraction

Source J. Appl. Cryst. , 51 , 1387 ( 2018 )
DOI : 10.1107/S1600576718011287 | 3066 Cite : Bibtex RIS
Ali Al-Hassan, Arman Davtyan, H. Küpers, R. B. Lewis, Danial Bahrami, F. Bertram, Genziana Bussone, C. Richter, L. Geelhaar, and Ullrich Pietsch

16 Author L. Hüttenhofer , R. B. Lewis , S. Rauwerdink , A. Tahraoui , H. Küpers , L. Geelhaar , O. Marquardt , S. Ludwig
Title

Optimization of ohmic contacts to n-type GaAs nanowires

Source Phys. Rev. Applied , 10 , 034024 ( 2018 )
DOI : 10.1103/PhysRevApplied.10.034024 | Download arXiv: 1711.08284 | 2988 Cite : Bibtex RIS
L. Hüttenhofer, R. B. Lewis, S. Rauwerdink, A. Tahraoui, H. Küpers, L. Geelhaar, O. Marquardt, and S. Ludwig

17 Author A. Senichev , P. Corfdir , O. Brandt , M. Ramsteiner , S. Breuer , J. Schilling , L. Geelhaar , P. Werner
Title

Electronic properties of wurtzite GaAs: A correlated structural, optical, and theoretical analysis of the same polytypic GaAs nanowire

Source Nano Res. , 11 , 4708 ( 2018 )
DOI : 10.1007/s12274-018-2053-5 | 3036 Cite : Bibtex RIS
A. Senichev, P. Corfdir, O. Brandt, M. Ramsteiner, S. Breuer, J. Schilling, L. Geelhaar, and P. Werner

18 Author E. Courtade , B. Han , S.Nakhaie , C. Robert , X. Marie , P. Renucci , T. Taniguchi , K. Watanabe , L. Geelhaar , J. M. J. Lopes , B. Urbaszek
Title

Spectrally narrow exciton luminescence from monolayer MoS2 and MoSe2 exfoliated onto epitaxially grown hexagonal BN

Source Appl. Phys. Lett. , 113 , 032106 ( 2018 )
DOI : 10.1063/1.5033554 | Download: PDF | 3051 Cite : Bibtex RIS
E. Courtade, B. Han, S.Nakhaie, C. Robert, X. Marie, P. Renucci, T. Taniguchi, K. Watanabe, L. Geelhaar, J. M. J. Lopes, and B. Urbaszek

19 Author A. Davtyan , V. Favre-Nicolin , R. B. Lewis , H. Küpers , L. Geelhaar , D. Kriegner , D. Bahrami , A. Al-Hassan , G. Chahine , O. Loffeld , U. Pietsch
Title

Coherent X-ray diffraction imaging meets ptychography to study core-shell-shell nanowires

Source MRS Advances , 3 , 2317 ( 2018 )
DOI : 10.1557/adv.2018.466 | 3038 Cite : Bibtex RIS
A. Davtyan, V. Favre-Nicolin, R. B. Lewis, H. Küpers, L. Geelhaar, D. Kriegner, D. Bahrami, A. Al-Hassan, G. Chahine, O. Loffeld, and U. Pietsch

20 Author P. Corfdir , G. Calabrese , A. Laha , T. Auzelle , L. Geelhaar , O. Brandt , S. Fernández-Garrido
Title

Monitoring the formation of GaN nanowires in molecular beam epitaxy by polarization-resolved optical reflectometry

Source CrystEngComm , 20 , 3202 ( 2018 )
DOI : 10.1039/C8CE00431E | 3006 Cite : Bibtex RIS
P. Corfdir, G. Calabrese, A. Laha, T. Auzelle, L. Geelhaar, O. Brandt, and S. Fernández-Garrido