Acting Director
Head of Department Epitaxy
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. Schroth , M. Köhl , J.-W. Hornung , E. Dimakis , C. Somaschini , L. Geelhaar , A. Biermanns , S. Bauer , S. Lazarev , U. Pietsch , T. Baumbach |
Title |
Evolution of polytypism in GaAs nanowires during growth revealed by time-resolved in-situ X-ray diffraction |
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Source | Phys. Rev. Lett. , 114 , 055504 ( 2015 ) | |
DOI : 10.1103/PhysRevLett.114.055504 | Download: PDF | Cite : Bibtex RIS |
82 | Author | G. Bussone , H. Schäfer-Eberwein , E. Dimakis , A. Biermanns , D. Carbone , A. Tahraoui , L. Geelhaar , P. HaringBolívar , T. U. Schülli , U. Pietsch |
Title |
Correlation of electrical and structural properties of single as-grown GaAs nanowires on Si (111) substrates |
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Source | Nano Lett. , 15 , 981 ( 2015 ) | |
DOI : 10.1021/nl5037879 | Cite : Bibtex RIS |
83 | Author | O. Romanyuk , S. Fernández-Garrido , P. Jiricek , I. Bartos , L. Geelhaar , O. Brandt , T. Paskova |
Title |
Non-destructive assessment of the polarity of GaN nanowire ensembles using low-energy electron diffraction and x-ray photoelectron diffraction |
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Source | Appl. Phys. Lett. , 106 , 021602 ( 2015 ) | |
DOI : 10.1063/1.4905651 | Download: PDF | Cite : Bibtex RIS |
84 | Author | M. Koehl , P. Schroth , A. A. Minkevich , J.-W. Hornung , E. Dimakis , C. Somaschini , L. Geelhaar , T. Aschenbrenner , S. Lazarev , D. Grigoriev , U. Pietsch , T. Baumbach |
Title |
Polytypism in GaAs nanowires: Determination of the interplanar spacing of wurtzite GaAs by X-ray diffraction |
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Source | J. Synchrotron Rad. , 22 , 67 ( 2015 ) | |
DOI : 10.1107/S1600577514023480 | Download: PDF | Cite : Bibtex RIS |
85 | Author | J. Kamimura , M. Ramsteiner , L. Geelhaar , H. Riechert |
Title |
Si doping effects on (In,Ga)N nanowires |
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Source | J. Appl. Phys. , 116 , 244310 ( 2014 ) | |
DOI : 10.1063/1.4905257 | Download: PDF | Cite : Bibtex RIS |
86 | 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 |
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Source | Phys. Rev. B , 90 , 195309 ( 2014 ) | |
DOI : 10.1103/PhysRevB.90.195309 | Download: PDF | Cite : Bibtex RIS |
87 | 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) |
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Source | Nano Lett. , 14 , 6878 ( 2014 ) | |
DOI : 10.1021/nl502878a | Cite : Bibtex RIS |
88 | 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 |
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Source | Nanotechnology , 25 , 485602 ( 2014 ) | |
DOI : 10.1088/0957-4484/25/48/485602 | Cite : Bibtex RIS |
89 | 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 |
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Source | Nanotechnology , 25 , 455702 ( 2014 ) | |
DOI : 10.1088/0957-4484/25/45/455702 | Download arXiv: 1409.3773 | Cite : Bibtex RIS |
90 | 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 |
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Source | Phys. Rev. B , 90 , 165304 ( 2014 ) | |
DOI : 10.1103/PhysRevB.90.165304 | Download: PDF | Cite : Bibtex RIS |