Dr. Lutz Geelhaar

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

@article{ author = { L. Mancini and M. Morassi and C. Sinito and O. Brandt and L. Geelhaar and H.G. Song and Y.H. Cho and N. Guan and A. Madouri and C. Barbier and L. Largeau and A. Babichev and F.H. Julien and L. Travers and F. Oehler and N. Gogneau and J.C. Harmand and M. Tchernycheva }, title = { Optical properties of GaN Nanowires grown on chemical vapor deposited-Graphene }, journal = { Nanotechnology }, volume = { 30 }, year = { 2019 }, pages = { 214005 } }

TY - JOUR AU - L. Mancini AU - M. Morassi AU - C. Sinito AU - O. Brandt AU - L. Geelhaar AU - H.G. Song AU - Y.H. Cho AU - N. Guan AU - A. Madouri AU - C. Barbier AU - L. Largeau AU - A. Babichev AU - F.H. Julien AU - L. Travers AU - F. Oehler AU - N. Gogneau AU - J.C. Harmand AU - M. Tchernycheva TI - Optical properties of GaN Nanowires grown on chemical vapor deposited-Graphene JF - Nanotechnology JA - Nanotechnology J1 - NAN VL - 30 SP - 214005 PY - 2019/03/14

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

@article{ author = { M. Sobanska and Z. R. Zytkiewicz and G. Calabrese and L. Geelhaar and S. Fernández-Garrido }, title = { Comprehensive analysis of the self-assembled formation of GaN nanowires on amorphous AlxOy: in situ quadrupole mass spectrometry studies }, journal = { Nanotechnology }, volume = { 30 }, year = { 2019 }, pages = { 154002 } }

TY - JOUR AU - M. Sobanska AU - Z. R. Zytkiewicz AU - G. Calabrese AU - L. Geelhaar AU - S. Fernández-Garrido TI - Comprehensive analysis of the self-assembled formation of GaN nanowires on amorphous AlxOy: in situ quadrupole mass spectrometry studies JF - Nanotechnology JA - Nanotechnology J1 - NAN VL - 30 SP - 154002 PY - 2019/02/12

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

@article{ author = { H. Küpers and P. Corfdir and R. B. Lewis and T. Flissikowski and A. Tahraoui and H. T. Grahn and O. Brandt and 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 }, journal = { Physica Status Solidi Rapid Research Letters }, volume = { 13 }, year = { 2019 }, pages = { 1800527 } }

TY - JOUR AU - H. Küpers AU - P. Corfdir AU - R. B. Lewis AU - T. Flissikowski AU - A. Tahraoui AU - H. T. Grahn AU - O. Brandt AU - L. Geelhaar TI - Impact of outer shell structure and localization effects on charge carrier dynamics in GaAs/(In,Ga)As nanowire core-shell quantum wells JF - Physica Status Solidi Rapid Research Letters JA - Phys. Status Solidi-Rapid Res. Lett. J1 - VL - 13 SP - 1800527 PY - 2019/02/07

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

@article{ author = { G. Calabrese and G. Gao and D. van Treeck and P. Corfdir and C. Sinito and T. Auzelle and A. Trampert and L. Geelhaar and O. Brandt and S. Fernández-Garrido }, title = { Interfacial reactions during the molecular beam epitaxy of GaN nanowires on Ti/Al2O3 }, journal = { Nanotechnology }, volume = { 30 }, year = { 2019 }, pages = { 114001 } }

TY - JOUR AU - G. Calabrese AU - G. Gao AU - D. van Treeck AU - P. Corfdir AU - C. Sinito AU - T. Auzelle AU - A. Trampert AU - L. Geelhaar AU - O. Brandt AU - S. Fernández-Garrido TI - Interfacial reactions during the molecular beam epitaxy of GaN nanowires on Ti/Al2O3 JF - Nanotechnology JA - Nanotechnology J1 - NAN VL - 30 SP - 114001 PY - 2019/01/25

Excitonic Aharonov-Bohm oscillations in core-shell nanowires

@article{ author = { P. Corfdir and O. Marquardt and R. B. Lewis and C. Sinito and M. Ramsteiner and A. Trampert and U. Jahn and L. Geelhaar and O. Brandt and V. M. Fomin }, title = { Excitonic Aharonov-Bohm oscillations in core-shell nanowires }, journal = { Advanced Materials }, volume = { 31 }, year = { 2019 }, pages = { 1805645 } }

TY - JOUR AU - P. Corfdir AU - O. Marquardt AU - R. B. Lewis AU - C. Sinito AU - M. Ramsteiner AU - A. Trampert AU - U. Jahn AU - L. Geelhaar AU - O. Brandt AU - V. M. Fomin TI - Excitonic Aharonov-Bohm oscillations in core-shell nanowires JF - Advanced Materials JA - Adv. Mater. J1 - VL - 31 SP - 1805645 PY - 2019/01/15

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

@article{ author = { Ali Al-Hassan and A. Davtyan and H. Küpers and R. B. Lewis and D. Bahrami and F. Bertram and Genziana Bussone and C. Richter and L. Geelhaar and U. 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 }, journal = { Journal of Applied Crystallography }, volume = { 51 }, year = { 2018 }, pages = { 1387 } }

TY - JOUR AU - Ali Al-Hassan AU - A. Davtyan AU - H. Küpers AU - R. B. Lewis AU - D. Bahrami AU - F. Bertram AU - Genziana Bussone AU - C. Richter AU - L. Geelhaar AU - U. Pietsch TI - 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 JF - Journal of Applied Crystallography JA - J. Appl. Cryst. J1 - VL - 51 SP - 1387 PY - 2018/09/13

Optimization of ohmic contacts to n-type GaAs nanowires

@article{ author = { L. Hüttenhofer and R. B. Lewis and S. Rauwerdink and A. Tahraoui and H. Küpers and L. Geelhaar and O. Marquardt and S. Ludwig }, title = { Optimization of ohmic contacts to n-type GaAs nanowires }, journal = { Physical Review Applied }, volume = { 10 }, year = { 2018 }, pages = { 034024 } }

TY - JOUR AU - L. Hüttenhofer AU - R. B. Lewis AU - S. Rauwerdink AU - A. Tahraoui AU - H. Küpers AU - L. Geelhaar AU - O. Marquardt AU - S. Ludwig TI - Optimization of ohmic contacts to n-type GaAs nanowires JF - Physical Review Applied JA - Phys. Rev. Appl. J1 - VL - 10 SP - 034024 PY - 2018/09/12

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

@article{ author = { A. Senichev and P. Corfdir and O. Brandt and M. Ramsteiner and S. Breuer and J. Schilling and L. Geelhaar and P. Werner }, title = { Electronic properties of wurtzite GaAs: A correlated structural, optical, and theoretical analysis of the same polytypic GaAs nanowire }, journal = { Nano Research }, volume = { 11 }, year = { 2018 }, pages = { 4708 } }

TY - JOUR AU - A. Senichev AU - P. Corfdir AU - O. Brandt AU - M. Ramsteiner AU - S. Breuer AU - J. Schilling AU - L. Geelhaar AU - P. Werner TI - Electronic properties of wurtzite GaAs: A correlated structural, optical, and theoretical analysis of the same polytypic GaAs nanowire JF - Nano Research JA - Nano Res. J1 - VL - 11 SP - 4708 PY - 2018/08/15

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

@article{ author = { E. Courtade and B. Han and S.Nakhaie and C. Robert and X. Marie and P. Renucci and T. Taniguchi and K. Watanabe and L. Geelhaar and J. M. J. Lopes and B. Urbaszek }, title = { Spectrally narrow exciton luminescence from monolayer MoS2 and MoSe2 exfoliated onto epitaxially grown hexagonal BN }, journal = { Applied Physics Letters }, volume = { 113 }, year = { 2018 }, pages = { 032106 } }

TY - JOUR AU - E. Courtade AU - B. Han AU - S.Nakhaie AU - C. Robert AU - X. Marie AU - P. Renucci AU - T. Taniguchi AU - K. Watanabe AU - L. Geelhaar AU - J. M. J. Lopes AU - B. Urbaszek TI - Spectrally narrow exciton luminescence from monolayer MoS2 and MoSe2 exfoliated onto epitaxially grown hexagonal BN JF - Applied Physics Letters JA - Appl. Phys. Lett. J1 - APL VL - 113 SP - 032106 PY - 2018/07/19

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

@article{ author = { A. Davtyan and V. Favre-Nicolin and R. B. Lewis and H. Küpers and L. Geelhaar and D. Kriegner and D. Bahrami and A. Al-Hassan and G. Chahine and O. Loffeld and U. Pietsch }, title = { Coherent X-ray diffraction imaging meets ptychography to study core-shell-shell nanowires }, journal = { MRS Advances }, volume = { 3 }, year = { 2018 }, pages = { 2317 } }

TY - JOUR AU - A. Davtyan AU - V. Favre-Nicolin AU - R. B. Lewis AU - H. Küpers AU - L. Geelhaar AU - D. Kriegner AU - D. Bahrami AU - A. Al-Hassan AU - G. Chahine AU - O. Loffeld AU - U. Pietsch TI - Coherent X-ray diffraction imaging meets ptychography to study core-shell-shell nanowires JF - MRS Advances JA - MRS Advances J1 - VL - 3 SP - 2317 PY - 2018/05/28