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

 

 

1 Author Jumpei Kamimura , M. Budde , Peter Bogdanoff , Carsten Tschammer , Fatwa F. Abdi , Roel van de Krol , O. Bierwagen , Henning Riechert , L. Geelhaar
Title

Protection Mechanism against Photocorrosion of GaN Photoanodes Provided by NiO Thin Layers

Source Sol. RRL , xxx , xxx ( 2020 )
DOI : 10.1002/solr.202000568 | 3172 Cite : Bibtex RIS
Jumpei Kamimura, M. Budde, Peter Bogdanoff, Carsten Tschammer, Fatwa F. Abdi, Roel van de Krol, O. Bierwagen, Henning Riechert, and L. Geelhaar

2 Author A. Davtyan , D. Kriegner , V. Holý , A. AlHassan , R.B. Lewis , S. McDermott , L. Geelhaar , D. Bahrami , T. Anjum , Z. Ren , C. Richter , D. Novikov , J. Müller , B. Butz , U. Pietsch
Title

X-ray diffraction reveals the amount of strain and homogeneity of extremely bent single nanowires

Source J. Appl. Cryst. , 53 , 1310 ( 2020 )
DOI : 10.1107/S1600576720011516 | 3222 Cite : Bibtex RIS
A. Davtyan, D. Kriegner, V. Holý, A. AlHassan, R.B. Lewis, S. McDermott, L. Geelhaar, D. Bahrami, T. Anjum, Z. Ren, C. Richter, D. Novikov, J. Müller, B. Butz, and U. Pietsch

3 Author Y. Zhao , Z. Xing , L. Geelhaar , J. Zhang , W. Yang , T. Auzelle , Y. Wu , L. Bian , S. Lu
Title

Detaching highly flexible and transparent (In,Ga)N nanowire films by a low-cost and stable electrochemical procedure

Source ACS Appl. Nano Mater. , 3 , 9943 ( 2020 )
DOI : 10.1021/acsanm.0c01970 | 3202 Cite : Bibtex RIS
Y. Zhao, Z. Xing, L. Geelhaar, J. Zhang, W. Yang, T. Auzelle, Y. Wu, L. Bian, and S. Lu

4 Author M. Aghaeipour , L. Kasper , J. Herranz , L. Geelhaar , J. Bruns
Title

Efficient adjustable light couplers of integrated III–V nanowire emitters on silicon waveguides based on ring resonators

Source Opt. Lett. , 45 , 4702 ( 2020 )
DOI : 10.1364/OL.398930 | 3210 Cite : Bibtex RIS
M. Aghaeipour, L. Kasper, J. Herranz, L. Geelhaar, and J. Bruns

5 Author A. AlHassan , J. Lähnemann , A. Davtyan , M. Al-Humaidi , J. Herranz , D. Bahrami , T. Anjum , F. Bertram , A. B. Dey , L. Geelhaar , U. Pietsch
Title

Beam damage of single semiconductor nanowires during X-ray nano beam diffraction experiments

Source J. Synchrotron Rad. , 27 , 1200 ( 2020 )
DOI : 10.1107/S1600577520009789 | Download: PDF | 3193 Cite : Bibtex RIS
A. AlHassan, J. Lähnemann, A. Davtyan, M. Al-Humaidi, J. Herranz, D. Bahrami, T. Anjum, F. Bertram, A. B. Dey, L. Geelhaar, and U. Pietsch

6 Author G. Calabrese , D. van Treeck , V. M. Kaganer , O. Konovalov , P. Corfdir , C. Sinito , L. Geelhaar , O. Brandt , S. Fernández-Garrido
Title

Radius-Dependent Homogeneous Strain in Uncoalesced GaN Nanowires

Source Acta Mat. , 195 , 87 ( 2020 )
DOI : 10.1016/j.actamat.2020.04.045 | 3147 Cite : Bibtex RIS
G. Calabrese, D. van Treeck, V. M. Kaganer, O. Konovalov, P. Corfdir, C. Sinito, L. Geelhaar, O. Brandt, and S. Fernández-Garrido

7 Author A. AlHassan , J. Lähnemann , S. Leake , H. Küpers , M. Niehle , D. Bahrami , F. Bertram , R. B. Lewis , A. Davtyan , T. U. Schülli , L. Geelhaar , U. Pietsch
Title

Spatially-resolved luminescence and crystal structure of single core-shell nanowires measured in the as-grown geometry

Source Nanotechnology , 31 , 214002 ( 2020 )
DOI : 10.1088/1361-6528/ab7590 | Download arXiv: 2002.08172 | 3173 Cite : Bibtex RIS
A. AlHassan, J. Lähnemann, S. Leake, H. Küpers, M. Niehle, D. Bahrami, F. Bertram, R. B. Lewis, A. Davtyan, T. U. Schülli, L. Geelhaar, and U. Pietsch

8 Author M. Azadmand , T. Auzelle , J. Lähnemann , G. Gao , L. Nicolai , M. Ramsteiner , A. Trampert , S. Sanguinetti , O. Brandt , L. Geelhaar
Title

Self-assembly of well-separated AlN nanowires directly on sputtered metallic TiN films

Source Phys. Status Solidi-Rapid Res. Lett. , 14 , 1900615 ( 2020 )
DOI : 10.1002/pssr.201900615 | Download arXiv: 1910.07391 | 3149 Cite : Bibtex RIS
M. Azadmand, T. Auzelle, J. Lähnemann, G. Gao, L. Nicolai, M. Ramsteiner, A. Trampert, S. Sanguinetti, O. Brandt, and L. Geelhaar

9 Author D. van Treeck , S. Fernández-Garrido , L. Geelhaar
Title

Influence of the source arrangement on shell growth around GaN nanowires in molecular beam epitaxy

Source Phys. Rev. Mater. , 4 , 013404 ( 2020 )
DOI : 10.1103/PhysRevMaterials.4.013404 | Download arXiv: 1907.10358 | 3109 Cite : Bibtex RIS
D. van Treeck, S. Fernández-Garrido, and L. Geelhaar

10 Author J. Herranz , P. Corfdir , E. Luna , U. Jahn , R. B. Lewis , L. Schrottke , J. Lähnemann , A. Tahraoui , A. Trampert , O. Brandt , L. Geelhaar
Title

Coaxial GaAs/(In,Ga)As dot-in-a-well nanowire heterostructures for electrically driven infrared light generation on Si in the telecommunication O band

Source ACS Appl. Nano Mater. , 3 , 165 ( 2020 )
DOI : 10.1021/acsanm.9b01866 | Download arXiv: 1908.10134 | 3132 Cite : Bibtex RIS
J. Herranz, P. Corfdir, E. Luna, U. Jahn, R. B. Lewis, L. Schrottke, J. Lähnemann, A. Tahraoui, A. Trampert, O. Brandt, and L. Geelhaar