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

 

 

41 Author R. B. Lewis , L. Nicolai , H. Küpers , M. Ramsteiner , A. Trampert , L. Geelhaar
Title

Anomalous strain relaxation in core-shell nanowires via simultaneous coherent and incoherent growth

Source Nano Lett. , 17 , 136 ( 2017 )
DOI : 10.1021/acs.nanolett.6b03681 | 2824 Cite : Bibtex RIS
R. B. Lewis, L. Nicolai, H. Küpers, M. Ramsteiner, A. Trampert, and L. Geelhaar

42 Author J. Kamimura , P. Bogdanoff , P. Corfdir , O. Brandt , H. Riechert , L. Geelhaar
Title

Broad-band light absorption and high photocurrent of (In,Ga)N nanowire photoanodes resulting from a radial Stark effect

Source ACS Appl. Mater. Interfaces , 8 , 34490 ( 2016 )
DOI : 10.1021/acsami.6b12874 | 2834 Cite : Bibtex RIS
J. Kamimura, P. Bogdanoff, P. Corfdir, O. Brandt, H. Riechert, and L. Geelhaar

43 Author H. Küpers , F. Bastiman , E. Luna , C. Somaschini , L. Geelhaar
Title

Ga predeposition for the Ga-assisted growth of GaAs nanowire ensembles with low number density and homogeneous length

Source J. Cryst. Growth , 459 , 43 ( 2016 )
DOI : 10.1016/j.jcrysgro.2016.11.065 | 2864 Cite : Bibtex RIS
H. Küpers, F. Bastiman, E. Luna, C. Somaschini, and L. Geelhaar

44 Author C. Pfüller , P. Corfdir , C. Hauswald , T. Flissikowski , X. Kong , J. K. Zettler , S. Fernández-Garrido , P. Dogan , H. T. Grahn , A. Trampert , L. Geelhaar , O. Brandt
Title

Nature of excitons bound to inversion domain boundaries: Origin of the 3.45-eV luminescence lines in spontaneously formed GaN nanowires on Si(111)

Source Phys. Rev. B , 94 , 155308 ( 2016 )
DOI : 10.1103/PhysRevB.94.155308 | Download: PDF | 2852 Cite : Bibtex RIS
C. Pfüller, P. Corfdir, C. Hauswald, T. Flissikowski, X. Kong, J. K. Zettler, S. Fernández-Garrido, P. Dogan, H. T. Grahn, A. Trampert, L. Geelhaar, and O. Brandt

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

Exciton dynamics in GaAs(Al,Ga)As core-shell nanowires with shell quantum dots

Source Phys. Rev. B , 94 , 155413 ( 2016 )
DOI : 10.1103/PhysRevB.94.155413 | Download: PDF | 2798 Cite : Bibtex RIS
P. Corfdir, H. Küpers, R. B. Lewis, T. Flissikowski, H. T. Grahn, L. Geelhaar, and O. Brandt

46 Author J. Lähnemann , T. Flissikowski , M. Wölz , L. Geelhaar , H. T. Grahn , O. Brandt , U. Jahn
Title

Quenching of the luminescence intensity of GaN nanowires under electron beam exposure: Impact of C adsorption on the exciton lifetime

Source Nanotechnol. , 27 , 455706 ( 2016 )
DOI : 10.1088/0957-4484/27/45/455706 | Download arXiv: 1607.03397 | 2849 Cite : Bibtex RIS
J. Lähnemann, T. Flissikowski, M. Wölz, L. Geelhaar, H. T. Grahn, O. Brandt, and U. Jahn

47 Author P. Corfdir , R. B. Lewis , O. Marquardt , H. Küpers , J. Grandal , E. Dimakis , A. Trampert , L. Geelhaar , O. Brandt , R. T. Phillips
Title

Exciton recombination at crystal-phase quantum rings in GaAs/InxGa1-xAs core/multishell nanowires

Source Appl. Phys. Lett. , 109 , 082107 ( 2016 )
DOI : 10.1063/1.4961245 | Download: PDF | 2830 Cite : Bibtex RIS
P. Corfdir, R. B. Lewis, O. Marquardt, H. Küpers, J. Grandal, E. Dimakis, A. Trampert, L. Geelhaar, O. Brandt, and R. T. Phillips

48 Author I. Giuntoni , L. Geelhaar , J. Bruns , H. Riechert
Title

Light coupling between vertical III-V nanowires and planar Si photonic waveguides for the monolithic integration of active optoelectronic devices on a Si platform

Source Opt. Express , 24 , 18417 ( 2016 )
DOI : 10.1364/OE.24.018417 | Download: PDF | 2795 Cite : Bibtex RIS
I. Giuntoni, L. Geelhaar, J. Bruns, and H. Riechert

49 Author M. Sobanska , S. Fernández-Garrido , Z. R. Zytkiewicz , G. Tchutchulashvili , S. Gieraltowska , O. Brandt , L. Geelhaar
Title

Self-assembled growth of GaN nanowires on amorphous AlxOy: from nucleation to the formation of dense nanowire ensembles

Source Nanotechnol. , 27 , 325601 ( 2016 )
DOI : 10.1088/0957-4484/27/32/325601 | 2817 Cite : Bibtex RIS
M. Sobanska, S. Fernández-Garrido, Z. R. Zytkiewicz, G. Tchutchulashvili, S. Gieraltowska, O. Brandt, and L. Geelhaar

50 Author J. Kamimura , P. Bogdanoff , M. Ramsteiner , L. Geelhaar , H. Riechert
Title

Photoelectrochemical properties of InN nanowire photoelectrodes for solar water splitting

Source Semicond. Sci. Technol. , 31 , 074001 ( 2016 )
DOI : 10.1088/0268-1242/31/7/074001 | 2787 Cite : Bibtex RIS
J. Kamimura, P. Bogdanoff, M. Ramsteiner, L. Geelhaar, and H. Riechert