Investigation of the Non-Square InGaAsP/InP Quantum Wells in the Electric Field by Photoreflectance

• Authors: R. Kudrawiec , G. Sęk , W. Rudno-Rudziński , J. Misiewicz , J. Wojcik , B. Robinson , D. Thompson , P. Mascher
• Languages of publication: EN

Abstracts

EN

Non-square quantum wells in electric field have been investigated by photoreflectance and photoluminescence spectroscopies. The structures have been obtained by a post-growth modification (rapid thermal annealing) of standard 1.55μm InGaAsP-based laser structures that were grown by gas source molecular beam epitaxy. During rapid thermal annealing a migration of semiconductor atoms across quantum well interfaces changes the quantum well profile from a square well to a rounded well. The modification of the profile changes energy levels in the quantum well and in consequence a blue shift of the quantum well emission peak is observed in photoluminescence. In this paper the blue shift of the ground state transition of post-growth modified quantum well structures has been investigated by both photoluminescence and photoreflectance techniques. Also a blue shift of excited state transitions has been observed in photoreflectance spectra. Generally, a stronger blue shift for the ground state transition than for excited state transitions has been observed. Additionally, oscillator strengths for all quantum well transitions have been determined from photoreflectance spectra. It has been found that the oscillator strength is constant for all quantum well transitions despite of modification of the quantum well profile.

Keywords

EN

73.63.Hs; 78.67.-n; 66.10.Cb

Discipline

• 73.63.Hs: Quantum wells
• 78.67.-n: Optical properties of low-dimensional, mesoscopic, and nanoscale materials and structures(for magnetic properties of nanostructures, see 75.75.-c; for electronic transport in nanoscale structures, see 73.63.-b; for mechanical properties of nanoscale systems, see 62.25.-g)

• Publisher: Institute of Physics, Polish Academy of Sciences
• Journal: Acta Physica Polonica A
• Year: 2002
• Volume: 102
• Issue: 4-5
• Pages: 649-657

Dates

published

2002-10/11

received

2002-06-07

Contributors

author

R. Kudrawiec

• Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

author

G. Sęk

• Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

author

W. Rudno-Rudziński

• Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

author

J. Misiewicz

• Institute of Physics, Wrocław University of Technology, Wybrzeże Wyspiańskiego 27, 50-370 Wrocław, Poland

author

J. Wojcik

• Centre for Electrophotonic Materials and Devices, Department of Engineering Physics, McMaster University, Hamilton, Ontario, L8S 4L7 Canada

author

B. Robinson

• Centre for Electrophotonic Materials and Devices, Department of Engineering Physics, McMaster University, Hamilton, Ontario, L8S 4L7 Canada

author

D. Thompson

• Centre for Electrophotonic Materials and Devices, Department of Engineering Physics, McMaster University, Hamilton, Ontario, L8S 4L7 Canada

author

P. Mascher

• Centre for Electrophotonic Materials and Devices, Department of Engineering Physics, McMaster University, Hamilton, Ontario, L8S 4L7 Canada

References

• 1. Semiconductor Quantum Well Intermixing, Ed. E.H. Li, Gordon and Breach, Amsterdam 1997
• 2. J.F. Hazell, D.A. Thompson, N. Bertsch, J.G. Simmons, B.J. Robinson, G.I. Sproule, Semicond. Sci. Technol., 16, 986, 2001
• 3. N. Cao, B.B. Elenkrig, J.G. Simmons, D.A. Thompson, N. Puetz, Appl. Phys. Lett., 70, 3419, 1997
• 4. M. Boudreau, M. Boumerzoug, P. Mascher, P.E. Jessop, Appl. Phys. Lett., 63, 3014, 1993
• 5. F.H. Pollak, Modulation Spectroscopy of Semiconductor and Semiconductor Microstructures, in: Handbook on Semiconductors, Vol. 2, Ed. M. Balkanski, Elsevier Science, Amsterdam 1994, p. 527
• 6. T.J.C. Hosea, Phys. Status Solidi B, 189, 531, 1995
• 7. K. Jezierski P. Markiewicz, J. Misiewicz, M. Panek, B. Sciana, R. Korbutowicz, M. Tlaczala, J. Appl. Phys., 77, 4139, 1995

Identifiers

DOI

10.12693/APhysPolA.102.649