PDI -> Staff ->

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

 

 

81 Author P. Corfdir , C. Hauswald , J. K. Zettler , T. Flissikowski , J. Lähnemann , S. Fernández-Garrido , L. Geelhaar , H. T. Grahn , O. Brandt
Title

Stacking faults as quantum wells in nanowires: Density of states, oscillator strength and radiative efficiency

Source Phys. Rev. B , 90 , 195309 ( 2014 )
DOI : 10.1103/PhysRevB.90.195309 | Download: PDF | 2636 Cite : Bibtex RIS
P. Corfdir, C. Hauswald, J. K. Zettler, T. Flissikowski, J. Lähnemann, S. Fernández-Garrido, L. Geelhaar, H. T. Grahn, and O. Brandt

82 Author A. Biermanns , E. Dimakis , Anton Davydok , Takkuo Sasaki , L. Geelhaar , Masamitu Takahasi , U. Pietsch
Title

Role of liquid indium in the structural purity of wurtzite InAs nanowires that grow on Si(111)

Source Nano Lett. , 14 , 6878 ( 2014 )
DOI : 10.1021/nl502878a | 2629 Cite : Bibtex RIS
A. Biermanns, E. Dimakis, Anton Davydok, Takkuo Sasaki, L. Geelhaar, Masamitu Takahasi, and U. Pietsch

83 Author C. Somaschini , A. Biermanns , S. Bietti , G. Bussone , A. Trampert , S. Sanguinetti , H. Riechert , U. Pietsch , L. Geelhaar
Title

Axial InAs/GaAs heterostructures on silicon in a nanowire geometry

Source Nanotechnol. , 25 , 485602 ( 2014 )
DOI : 10.1088/0957-4484/25/48/485602 | 2502 Cite : Bibtex RIS
C. Somaschini, A. Biermanns, S. Bietti, G. Bussone, A. Trampert, S. Sanguinetti, H. Riechert, U. Pietsch, and L. Geelhaar

84 Author S. Fernández-Garrido , V. M. Kaganer , C. Hauswald , B. Jenichen , M. Ramsteiner , V. Consonni , L. Geelhaar , O. Brandt
Title

Correlation between the structural and optical properties of spontaneously formed GaN nanowires: A quantitative evaluation of the impact of nanowire coalescence

Source Nanotechnol. , 25 , 455702 ( 2014 )
DOI : 10.1088/0957-4484/25/45/455702 | Download arXiv: 1409.3773 | 2589 Cite : Bibtex RIS
S. Fernández-Garrido, V. M. Kaganer, C. Hauswald, B. Jenichen, M. Ramsteiner, V. Consonni, L. Geelhaar, and O. Brandt

85 Author C. Hauswald , P. Corfdir , J. K. Zettler , V. M. Kaganer , K. K. Sabelfeld , S. Fernández-Garrido , T. Flissikowski , V. Consonni , T. Gotschke , H. T. Grahn , L. Geelhaar , O. Brandt
Title

Origin of the nonradiative decay of bound excitons in GaN nanowires

Source Phys. Rev. B , 90 , 165304 ( 2014 )
DOI : 10.1103/PhysRevB.90.165304 | Download: PDF | 2635 Cite : Bibtex RIS
C. Hauswald, P. Corfdir, J. K. Zettler, V. M. Kaganer, K. K. Sabelfeld, S. Fernández-Garrido, T. Flissikowski, V. Consonni, T. Gotschke, H. T. Grahn, L. Geelhaar, and O. Brandt

86 Author G. Bussone , E. Dimakis , R. Grifone , A. Biermanns , A. Tahraoui , D. Carbone , L. Geelhaar , T. U. Schülli , U. Pietsch
Title

Impact of strain induced by polymer curing in benzocyclobutene embedded semiconductor nanostructures

Source Phys. Status Solidi RRL , 8 , 1007 ( 2014 )
DOI : 10.1002/pssr.201409346 | 2630 Cite : Bibtex RIS
G. Bussone, E. Dimakis, R. Grifone, A. Biermanns, A. Tahraoui, D. Carbone, L. Geelhaar, T. U. Schülli, and U. Pietsch

87 Author J. Grandal , M. Wu , X. Kong , M. Hanke , E. Dimakis , L. Geelhaar , H. Riechert , A. Trampert
Title

Plan-view transmission electron microscopy investigation of GaAs/(In,Ga)As core-shell nanowires

Source Appl. Phys. Lett. , 105 , 121602 ( 2014 )
DOI : 10.1063/1.4896505 | Download: PDF | 2596 Cite : Bibtex RIS
J. Grandal, M. Wu, X. Kong, M. Hanke, E. Dimakis, L. Geelhaar, H. Riechert, and A. Trampert

88 Author J. Lähnemann , C. Hauswald , M. Wölz , U. Jahn , M. Hanke , L. Geelhaar , O. Brandt
Title

Localization and defects in axial (In,Ga)N/GaN nanowire heterostructures investigated by spatially-resolved luminescence spectroscopy

Source J. Phys. D , 47 , 394010 ( 2014 )
DOI : 10.1088/0022-3727/47/39/394010 | Download arXiv: 1405.1507 | 2571 Cite : Bibtex RIS
J. Lähnemann, C. Hauswald, M. Wölz, U. Jahn, M. Hanke, L. Geelhaar, and O. Brandt

89 Author O. Marquardt , L. Geelhaar , O. Brandt
Title

Minimizing the impact of surface potentials in axial InGaN/GaN nanowire heterostructures by reducing their diameter

Source J. Phys. D , 47 , 1 ( 2014 )
DOI : 10.1088/0022-3727/47/39/394007 | 2565 Cite : Bibtex RIS
O. Marquardt, L. Geelhaar, and O. Brandt

90 Author S. Bietti , C. Somaschini , C. Frigeri , A. Fedorov , L. Esposito , L. Geelhaar , S. Sanguinetti
Title

Self-assisted GaAs nanowires with controllable number density on bare Silicon

Source J. Phys. D , 47 , 394002 ( 2014 )
DOI : 10.1088/0022-3727/47/39/394002 | 2568 Cite : Bibtex RIS
S. Bietti, C. Somaschini, C. Frigeri, A. Fedorov, L. Esposito, L. Geelhaar, and S. Sanguinetti