Radiative and nonradiative recombination processes in lattice-matched (Cd,Zn)O/(Mg,Zn)O multiquantum wells

Makino, T.; Chia, C. H.; Chia, C.H.; Tuan, Nguen T.; Segawa, Y.; Kawasaki, M.; Ohtomo, A.; Tamura, K.; Koinuma, H.
September 2000
Applied Physics Letters;9/11/2000, Vol. 77 Issue 11
Academic Journal
Time-resolved photoluminescence studies have been performed on (Cd,Zn)O/(Mg,Zn)O multiquantum wells, which are almost perfectly lattice matched (0.034%), grown by laser molecular-beam epitaxy on a ScAlMgO[sub 4] substrate. Radiative recombination of excitons in the wells exhibits a significant spectral distribution of times. This distribution was interpreted in terms of localization of excitons by potential fluctuations due to alloy disorder and to well width and depth variations. The temperature dependence of the radiative lifetime of excitons was deduced from the measurement of both the photoluminescence decay time and intensity. We found that the radiative lifetime increases linearly with temperature, showing a two-dimensional feature of excitons in the quantum wells. © 2000 American Institute of Physics.


Related Articles

  • Photoluminescence and Tunneling of Direct and Indirect Excitons of Semimagnetic Asymmetric Double Quantum Wells CdSe/CdMgSe/CdMnSe. Reshina, I. I.; Ivanov, S. V.; Mirlin, D. N.; Sedova, I. V.; Sorokin, S. V. // AIP Conference Proceedings;2007, Vol. 893 Issue 1, p1183 

    Exciton photoluminescence and reflection spectra of CdSe/CdMgSe/CdMnSe asymmetric double quantum wells with different barriers thickness were studied in strong magnetic fields for the first time. Direct excitons from the nonmagnetic CdSe and semimagnetic CdMnSe quantum wells were observed as...

  • Time resolved photoluminescence studies of perpendicular transport in CdTe/Cd1-xMnxTe short-period superlattices. Hellmann, R.; Pohlmann, A.; Göbel, E. O.; Yakovlev, D. R.; Waag, A.; Bicknell-Tassius, R. N.; Landwehr, G. // Journal of Applied Physics;10/15/1993, Vol. 74 Issue 8, p5272 

    Discusses present time-resolved photoluminescence studies of perpendicular transport and the subsequent capture of photoexcited carriers in II-VI semiconductor superlattices. Use of a cadmium telluride quantum well; Overview of Bloch-type perpendicular transport in electron and heavy-hole...

  • Giant fluctuations in the radiation intensity of two-dimensional electrons under quantum hall effect conditions. Parakhonskiĭ, A. L.; Lebedev, M. V.; Kukushkin, I. V.; Smet, Yu.; Von Klitzing, K. // Physics of the Solid State;May2007, Vol. 49 Issue 5, p976 

    Giant fluctuations in the 2D-electron recombination radiation were studied in structures with a single or double GaAs quantum well under quantum Hall effect conditions. It is established that, if these conditions are exactly satisfied, the amplitude of the 2D-electron photoluminescence (PL)...

  • Energy Spectra of Isolated Trions in Asymmetric Quantum Wells. Quinn, John J.; Gładysiewicz, Anna; Wójs, Arkadiusz // AIP Conference Proceedings;2006, Vol. 850 Issue 1, p1532 

    The energy spectra of negative trions (X- = 2e+h) in one-side doped GaAs/AlGaAs quantum wells are calculated. The trion binding energy Δ is obtained as a function of the well width w, electron concentration n, and the magnetic field B. The dependence of the trion ground state (“bright...

  • Photoluminescence of a Cd0.55Mn0.45Te-CdTe multiple quantum well structure in a magnetic field. Petrou, A.; Warnock, J.; Bicknell, R. N.; Giles-Taylor, N. C.; Schetzina, J. F. // Applied Physics Letters;4/1/1985, Vol. 46 Issue 7, p692 

    The photoluminescence of a Cd0.55Mn0.45 Te-CdTe multiple quantum well structure grown by molecular beam epitaxy has been studied. Both emission and excitation spectra were obtained at T=1.8 K and T=70 K with the specimen in a magnetic field ranging from 0 to 15 T.

  • Lasing in Cd(Zn)Se/ZnMgSSe Heterostructures Pumped by Nitrogen and InGaN/GaN Lasers. Sedova, I. V.; Sorokin, S. V.; Toropov, A. A.; Kaigorodov, V. A.; Ivanov, S. V.; Kop'ev, P. S.; Lutsenko, E. V.; Pavlovskii, V. N.; Zubelevich, V. Z.; Gurskii, A. L.; Yablonskii, G. P.; Dikrne, Y.; Kalisch, H.; Szyrnakowski, A.; Jansen, R. H.; Schineller, B.; Heuken, M. // Semiconductors;Sep2004, Vol. 38 Issue 9, p1099 

    Photoluminescence and lasing at a wavelength of λ = 510–530 nm (green spectral region) in Cd(Zn)Se/ZnMgSSe structures with a different design of the active region are studied in a wide range of temperatures and nitrogen laser pump intensities. A minimal lasing threshold of 10kW/cm2, a...

  • Optical properties of CdTe/ZnTe quantum dots sandwiched between two quantum wells with ZnTe separation barriers. Lee, H. S.; Park, H. L.; Kim, T. W. // Applied Physics Letters;10/30/2006, Vol. 89 Issue 18, p181929 

    Temperature-dependent photoluminescence (PL) measurements were performed to investigate the optical properties of CdTe/ZnTe nanostructures. The activation energy of the CdTe/ZnTe quantum dots (QDs) sandwiched between two quantum wells (QWs) with ZnTe separation barriers, as obtained from the...

  • Optical properties of highly strained CdSe/ZnSe quantum wells. Shan, W.; Hwang, S. J.; Hays, J. M.; Song, J. J.; Zhu, Z. Q.; Yao, T. // Journal of Applied Physics;11/1/1993, Vol. 74 Issue 9, p5699 

    Presents a study of the optical properties of highly strained cadmium selenide/zinc selenide quantum well system using photoluminescence (PL), photoluminescence excitation, and photoreflectance measurements. Association between PL signals and excitonic emissions; Factors influencing PL signal...

  • Exciton line broadening in CdxZn1-xTe/ZnTe multiple quantum wells. Stanley, R. P.; Hegarty, J.; Feldman, R. D.; Austin, R. F. // Applied Physics Letters;10/10/1988, Vol. 53 Issue 15, p1417 

    We have investigated Cdx Zn1-xTe/ZnTe multiple quantum wells using absorption techniques. We have observed sharp excitonic features at low temperatures which strongly broaden at room temperature. The strength of the exciton-phonon coupling is determined from linewidth analysis. The large...


Read the Article


Sorry, but this item is not currently available from your library.

Try another library?
Sign out of this library

Other Topics