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

 

 

61 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

62 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 Nanotechnology , 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

63 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

64 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

65 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 Nanotechnology , 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

66 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

67 Author M. Musolino , A. Tahraoui , D. van Treeck , L. Geelhaar , H. Riechert
Title

A modified Shockley equation taking into account the multi-element nature of light emitting diodes based on nanowire ensembles

Source Nanotechnology , 27 , 275203 ( 2016 )
DOI : 10.1088/0957-4484/27/27/275203 | 2803 Cite : Bibtex RIS
M. Musolino, A. Tahraoui, D. van Treeck, L. Geelhaar, and H. Riechert

68 Author G. Calabrese , P. Corfdir , G. Gao , C. Pfüller , A. Trampert , O. Brandt , L. Geelhaar , S. Fernández-Garrido
Title

Molecular beam epitaxy of single crystalline GaN nanowires on a flexible Ti foil

Source Appl. Phys. Lett. , 108 , 202101 ( 2016 )
DOI : 10.1063/1.4950707 | Download: PDF | 2794 Cite : Bibtex RIS
G. Calabrese, P. Corfdir, G. Gao, C. Pfüller, A. Trampert, O. Brandt, L. Geelhaar, and S. Fernández-Garrido

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

Crystal-phase quantum dots in GaN quantum wires

Source Phys. Rev. B , 93 , 115305 ( 2016 )
DOI : 10.1103/PhysRevB.93.115305 | Download: PDF | 2783 Cite : Bibtex RIS
P. Corfdir, C. Hauswald, O. Marquardt, T. Flissikowski, J. K. Zettler, S. Fernández-Garrido, L. Geelhaar, H. T. Grahn, and O. Brandt

70 Author J. K. Zettler , P. Corfdir , C. Hauswald , E. Luna , U. Jahn , T. Flissikowski , E. Schmidt , C. Ronning , A. Trampert , L. Geelhaar , H. T. Grahn , O. Brandt , S. Fernández-Garrido
Title

Observation of dielectrically confined excitons in ultrathin GaN nanowires up to room temperature

Source Nano Lett. , 16 , 973 ( 2016 )
DOI : 10.1021/acs.nanolett.5b03931 | 2739 Cite : Bibtex RIS
J. K. Zettler, P. Corfdir, C. Hauswald, E. Luna, U. Jahn, T. Flissikowski, E. Schmidt, C. Ronning, A. Trampert, L. Geelhaar, H. T. Grahn, O. Brandt, and S. Fernández-Garrido

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