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- STEVENS-KALCEFF, M.A., TIGINYANU, I., M., LANGA, S., FÖLL, H., HARTNAGEL, H.L.: Correlation between
morphology and cathodoluminescence in porous GaP. J. App. Phys. 89 (5), (2001) 2560-2565 (55 citations)
- STEVENS-KALCEFF, M.A., LANGA, S., TIGINYANU, I. M., CARSTENSEN, J., CHRISTOPHERSEN, M., FÖLL, H.: Comparative SEM
and cathodoluminescence micoranalysis of porous GaP structures, MRS Conference proceedings, 638, (2001), F5.31 (6
citations)
- CHRISTOPHERSEN, M., CARSTENSEN, J., RÖNNEBECK, S., JÄGER, C., JÄGER, W., FÖLL, H..: Crystal orientation
dependence and anisotropic properties of macropore formation of p- and n-type silicon, Journal of The Electrochemical Society,
148(6) , E267-E275 (2001) (118 citations)
- LANGA, S., CARSTENSEN, J., CHRISTOPHERSEN, M., FÖLL, H., TIGINYANU, I. M.: Observation of crossing pores in anodically
etched n-GaAs. App. Phys. Lett. 78 (8), (2001) 1074-1076 (127 citations)
- LEHMANN, V., RÖNNEBECK, S.: MEMS Techniques Applied to the Fabrication of Anti-Scatter Grids
for X-Ray Imaging. Sensors and Actuators A, 95, 202 (2001) (41 citations)
- I.V. Grekhov, T.S. Agrunova, L.S. Kostina, N.M. Shmidt, H. Föll, and K.B. Kostin: "Direct bonding of silicon
wafers with simultaneous dopant diffusion", in MRS Proceedings Volume 681E: Wafer Bonding and Thinning Techniques for
Materials Integration, eds. T.E. Haynes, U.M. Gösele, M. Nastasi, and T. Yonehara, I5.7 (2001) (1
citations)
- LEHMANN, V., RÖNNEBECK, S.: MEMS Techniques Applied to the Fabrication of Anti-Scatter Grids
for X-Ray Imaging. Technical Digest of the 14th IEEE International Conference on Micro Electro Mechanical Systems, Interlaken
2001, 84 (41 citations)
- M. Hejjo Al-Rifai, J. Carstensen, and H. Föll.: A new passivation method for edge shunts of silicon solar cells,
Proceedings of the 17th european conference on photovaltaics, Munich, (2001), 1424 (1 citations)
- CHRISTOPHERSEN, M., MERZ, P., QUENZER, J., CARSTENSEN, J., FÖLL, H.: Deep electrochemical trench etching with organic
hydrofluoric electrolytes. Sensors and Actuators A 88 (2001) 241 (20 citations)
- H. Föll, "Ist der Stein der Weisen aus Silizium?", in ...und Er würfelt doch!,
H. Müller-Krumbhaar, H.-F. Wagner (Eds.), Wiley-VCH, Weinheim, 2001 S.
- Langa, J. Carstensen, I. M. Tiginyanu, M. Christophersen, H. Föll, Formation of tetrahedron-like pores during anodic
etching of (100)-oriented n-GaAs, Electrochem. Solid-State Lett., 5, C14-C17, (2002) (51 citations)
- I.M. Tiginyanu, S. Langa, M. Christophersen, J. Carstensen, V. Sergentu, E. Foca, O. Rios, and H. Föll, Properties
of 2D and 3D Dielectric Structures Fabricated by Electrochemical Dissolution of III-V Compounds, MRS Proceedings 692, (2002),
K2.7 (4 citations)
- H. Foll, S. Langa, J. Carstensen, M. Christophersen, I. M. Tiginyanu, K. Dichtel, Pore Etching in Compound Semiconductors
for the Production of Photonic Crystals, invited paper: Mat. Res. Soc. Symp. Proc. 722 , Editors: R.B. Wehrspohn, R. März,
S. Noda, and C. Soukoulis, L6.4, (2002) M. (4 citations)
- Hejjo Al-Rifai, J. Carstensen, and H. Föll.: A simple passivation technique for the edge area of silicon solar
cells improves the efficiency. Solar Energy Materials & Solar Cells 72 (2002), 327 - 333 H . (19
citations)
- Föll, M. Christophersen, J. Carstensen, G. Hasse:
Formation and application of porous silicon (invited review) Mat. Sci. Eng. R 39 (4) (2002) 93-141. (1063 citations)
- J. Carstensen, G. Popkirov, J. Bahr, and H. Föll, CELLO: An Advanced LBIC Measurement Technique for Solar Cell
Local Characterization, in Photovoltaic and Photoactive Materials - Properties, Technology and Applications, eds. J.M. Marshall
and D. Dimova-Malinovska, Kluver Academic Publishers (Netherland), 321 (2002). (short version of 146)
- H. Föll, J. Carstensen, S. Langa, M. Christophersen, and I.M. Tiginyanu, "Photonic Crystals: the Future of
Optical Communications", in Proceedings of the 3rd International Conference on Microelectronics and Computer Science,
1, Technical University of Moldova (2002).
- S. Lölkes, M. Christophersen, S. Langa, J. Carstensen, and H. Föll, Selforganized formation of crystallographically
oriented octahedral cavities during electrochemical pore etching, Mat. Sci. Eng. B 101, 159 (2003). (24
citations)
- J. C. Claussen, J. Carstensen, M. Christophersen, S. Langa, H. Föll, Self-organized pore formation and open-loop-control
in semiconductor etching, Chaos, 13(1), 217, (2003). (28 citations)
- H. Föll, J. Carstensen, S. Langa, M. Christophersen, I.M.Tiginyanu, Porous III-V compound semiconductors: formation,
properties and comparison to silicon, (invited paper at PSST 2002), phys. stat. sol. (a) 197(1), 61 (2003) (90
citations)
- S. Langa, M. Christophersen, J. Carstensen, I. M. Tiginyanu, H. Föll, Single crystalline 2D porous arrays obtained
by self-organization in n-InP, phys. stat. sol. (a) 197(1), 77 (2003) (69 citations)
- S. Langa, J. Carstensen, M. Christophersen, I. M. Tiginyanu, H.Föll, Voltage oscillations - an emergent property
at high density pore growth,phys. stat. sol. (a) 197(1), 186 (2003) M. Christophersen, (15 citations)
- S. Langa, J. Carstensen, I. M. Tiginyanu, H.Föll, A comparison of pores in silicon and pores in III-V compound
materials,phys. stat. sol. (a) 197(1), 197 (2003) (53 citations)
- M. Christophersen, J. Carstensen, K. Voigt, and H. Föll, Organic and Aqueous Electrolytes Used for Etching Macro-
and Mesoporous Silicon, phys. stat. sol. (a) 197(1), 34 (2003) (78 citations)
- I.M. Tiginyanu, I.V. Kravetsky, S. Langa, G. Marowsky, J. Monecke, and H. Föll, Porous III-V Compounds as Nonlinear
Optical Materials, (invited paper at PSST 2002),phys. stat. sol. (a) 197(1), 549 (2003) (60 citations)
- J. Carstensen, G. Popkirov, J. Bahr, and H. Föll, CELLO: An Advanced LBIC Measurement Technique for Solar Cell
Local Characterization, Solar Energy Materials & Solar Cells 76599 - 611, (2003)
- S. Langa, I.M. Tiginyanu, M. Christophersen, J. Carstensen, and H.Föll, Self-organized growth of single crystals
of nanopores, Appl- Phys. Lett., 82(2), 278 - 280, (2003) (131 citations)
- M. H. Al Rifai, O. Breitenstein, J. P. Rakotoniaina, and J. Carstensen, Edge shunt passivation
in silicon solar cells by chemical etching investigated by lock-in thermography and CELLO, in Proceedings of the 3. World
Conference on Photovoltaic Energy Conversion, Osaka, Japan, 2003, (2003)
- LANGA, S., CHRISTOPHERSEN, M., CARSTENSEN, J., TIGINYANU, I.M., Föll, H., Electrochemical pore etching in Ge, phys.
stat. sol. (a) 195 (3), (2003), R4-R6 (34 citations)
- FÖLL, H., LANGA, S., CARSTENSEN, J., CHRISTOPHERSEN,
M., TIGINYANU, I.M. Review: Pores in III-V semiconductors. (invited review) Advanced Materials, 15(3) (2003) 183 - 198 (315 citations)
- FÖLL, H. Buchbesprechung zu "Morde Macht Moneten (von Dierk Raabe) Physik Journal
- I.M. Tiginyanu, V.V. Ursaki, V.V. Zalamai, S. Langa, S. Hubbard, D. Pavlidis, and H. Föll, Luminescence of GaN
nanocolumns obtained by photon-assisted anodic etching, Appl. Phys. Lett, 83 (8), (2003) , 1551 (79
citations)
- H. Föll, S. Langa, J. Carstensen, S. Lölkes, M. Christophersen, I.M. Tiginyanu, Engineering Porous III-Vs,
III-Vs Review, 16 (6) (2003), 42 (8 citations)
- M. Christophersen, S. Langa, J. Carstensen, P.M. Fauchet, and H. Föll, "Self-induced Voltage Oscillations
and Diameter Modulations During Pore Formation in Si and InP" in MRS Proceedings Spring Meeting: invited paper (2003)
- J.C. Claussen, J. Carstensen, M. Christophersen, S. Langa, and H. Föll, "Open-Loop-Control of pore formation
in semiconductor etching", in Proceedings of Physics and Control, St. Petersburg, Russia, ed. A.L. Fradkov, 895 (2003)
(3 citations)
- J.C. Claussen, J. Carstensen, M. Christophersen, S. Langa, and H. Föll, "Self-organized formation of fractal
and regular pores in semiconductors", in Lecture notes in computational science and engineering, eds. H. Emmerich,
B. Nestler, and M. Schreckenberg, 82, Springer, Berlin (2003)
- Photonic Crystals, eds. Kurt Busch, Stefan Lölkes, Ralf B. Wehrspohn, Helmut Föll, Wiley-VCH, Weinheim, Germany,
2004, (Table of Contents)
- R.B. Wehrspohn, J. Schilling, J. Choi, Y. Luo, S. Matthias, S.L. Schweizer, F. Müller, U. Gösele, S. Lölkes,
S. Langa, J. Carstensen, and H. Föll, Electrochemically-prepared 2D and 3D photonic crystals in: K. Busc(10
citations)h, S. Lölkes, R. B. Wehrspohn, and H. Föll (eds.), Photonic Crystals - Advances in Design, Fabrication,
and Characterization, Wiley-VCH, Weinheim (2004), 63
- I. M. Tiginyanu, S. Langa, L. Sirbu , E. Monaico, M. A. Stevens-Kalceff, and H. Föll, Cathodoluminescence microanalysis
of porous GaP and InP structures, Eur. Phys. J. Appl. Phys. 27, (2004) 81 (16 citations)
- V. Kochergin, M. Christophersen, and H. Föll, Effective medium approach for calculations of optical anisotropy
in porous materials, App. Phy. B 79 (6), (2004) 731 (26 citations)
- V. V. Sergentu, E. Foca, S. Langa, J. Carstensen, H. Föll, and I. M. Tiginyanu, Focusing effect of photonic crystal
concave lenses made from porous dielectrics, phys. stat. sol. (a), 201 (5), (2004) R31 (19 citations)
- CELLO: Ein Instrument zur Solarzellendiagnostik, Photon-DAS SOLARSTROM-MAGAZIN, 10/2004, 52
- CELLO: An instrument for solar cell diagnostics, PHOTON-International, 10/2004, 44
- S. Langa, S. Frey, J. Carstensen, H. Föll, I.M. Tiginyanu, M. Hermann, and G. Böttger, Waveguide Structures
Based on Porous Indium Phosphide, Electrochemical and Solid-State Letters, 8 (2), (2005), C30 (28
citations)
- H.-S. Kitzerow, G. Mertens, H. Matthias, H. Marsmann, R.B. Wehrspohn, S. Matthias, U. Gösele, S. Frey, and H. Föll,
"Director fields of nematic liquid crystals in tunable photonic crystals", Proc. SPIE Int. Soc. Opt. Eng. 5926,
592605 (2005). (3 citations)
- E. Foca, H. Föll, F. Daschner, V. V. Sergentu, J. Carstensen, S. Frey, R. Knöchel, and I. M. Tiginyanu, Efficient
focusing with a concave lens based on a photonic crystal with an unusual effective index of refraction, phys. stat. sol.
(a), 202 (4), (2005) R35 (11 citations)
- Langa, L. Sirbu, E. Monaico, J. Carstensen, H. Föll, and I.M. Tiginyanu, "Morphology and chemical composition
microanalysis of 2D and 3D ordered structures on porous InP", phys. stat. sol. (a) 202 (8), 1411 (2005). (5
citations)
- H. Elhouichet, M. Oueslati, N. Lorrain, S. Langa, I.M. Tiginyanu, and H. Föll, "Photoluminiscence mechanisms
of Tb3+ - doped porous GaP", phys. stat. sol. (a) 202 (8), 1513 (2005). (5 citations)
- E. Foca, J. Carstensen, and H. Föll, "Monte Carlo simulation of electrochemical oscillations in the electropolishing
regime", Phys. Stat. Sol. (a) 202 (8), 1524 (2005). (8 citations)
- S. Frey, M. Kemell, J. Carstensen, S. Langa, and H. Föll, "Fast pore etching", phys. stat. sol. (a) 202
(8), 1369 (2005). (35 citations)
- V. Kochergin, M. Christophersen, and H. Föll, Adjustable optical anisotropy in porous GaAs, Applied Phys. Lett.
86 (1), (2005) 042108. (12 citations)
- V. Kochergin, M. Christophersen, and H. Föll, Surface plasmon enhancement of an optical anisotropy in porous silicon/metal
composite, App. Phy. B 80 (1)(2005) 81. (9 citations)
- S. Langa, J. Carstensen, I.M. Tiginyanu, M. Christophersen, H. Föll, Selfordering in porous III-V compounds, in
"Ordered Porous Nanostructures and Applications", Ed. R.B. Wehrspohn, Springer-Verlag, (2005) 57.
- S. Langa, J. Carstensen, M. Christophersen, K. Steen, S. Frey, I. M. Tiginyanu, and H. Föll, Uniform and Nonuniform
Nucleation of Pores during the Anodization of Si, Ge, and III-V Semiconductors, J. Electrochem. Soc., 152 (8), (2005) C525.
(91 citations)
- S. Frey, B. Grésillon, F. Ozanam, J.-N. Chazalviel, J. Carstensen, H. Föll, and R. B. Wehrspohn, Self-Organized
Macrostructures in Anodically Formed Mesoporous Silica, Electrochem. Sol. State Lett., 8 (9), (2005) B25. (24
citations)
- E. Foca, H. Föll, F. Daschner, V. V. Sergentu, J. Carstensen, R. Knöchel, and I. M. Tiginyanu, Efficient Focusing
With an Ultra-Low Effective-Index Lens Based on Photonic Crystals, in "Materials, Integration and Technology for Monolithic
Instruments", edited by Jeremy A.Theil, Markus Böhm, Donald S. Gardner, and Travis Blalock (Mater. Res. Soc. Symp.
Proc. 869, Warrendale, PA , 2005), D4.4.
- J. Carstensen, S. Mathijssen, G. Popkirov, and H. Föll, SOLAR CELL EFFICIENCY ANALYSIS AND DEFECT IDENTIFICATION
USING THE CELLO - TECHNIQUE, in Proceedings of the 20th European Photovoltaic Solar Energy Conference, Barcelona 2005, (2005) 1AV.2.40.
- S. Mathijssen, J. Carstensen, and H. Föll, ANALYSIS OF SERIAL RESISTANCE LOSSES ON SOLAR CELLS USING THE CELLO
- TECHNIQUE, in Proceedings of the 20th European Photovoltaic Solar Energy Conference, Barcelona 2005, (2005) 1AV.2.41.
- E. Spiecker, M. Rudel, W. Jäger, M. Leisner, and H. Föll, Morphology, interface polarity and branching of
electrochemically etched pores in InP, phys. stat. sol. (a), 202(15), 1 (2005). (39 citations)
- O. Breitenstein, J.P. Rakotoniaina, A.S.H. van der Heide, and J. Carstensen, Series Resistance
Imaging in Solar Cells by Lock-in Thermography Research, Prog. Photovolt: Res. Appl., 13, (2005) 645. (60
citations)
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