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Exciton Dynamics in CdZnTeSe Quaternary Alloys

Research Project

Project/Area Number 08650021
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Applied materials science/Crystal engineering
Research InstitutionHokkaido Institute of Technology

Principal Investigator

IMAI Kazuaki  Hokkado Institute of Technology, Department of Engineering, Prof., 工学部・応用電子工学科, 教授 (40001987)

Co-Investigator(Kenkyū-buntansha) SAWADA Takayuki  Hokkado Institute of Technology, Department of Engineering, Prof., 工学部・応用電子工学科, 教授 (40113568)
Project Period (FY) 1996 – 1997
Project Status Completed (Fiscal Year 1997)
Budget Amount *help
¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1997: ¥500,000 (Direct Cost: ¥500,000)
Fiscal Year 1996: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsII-VI semiconductors / ZnSe / Excitions / Interface states
Research Abstract

1.In doped Cd_<1-X>Zn_XTe (x>0.7) have two types of acceptors from admittance spectroscopy and PL.One of them is so-called A-center. The other is located at E_V+0.27eV.
2.Huang-Rhys parameters S in ultra thin ZnSe-ZnTe superlattices are 3.5 and 7.5 for S1 and S2 emission bands, respectively. The configuration coordinates explain well the experiments.
3.The drift mobility of Cl doped Cd_<0.8>Zn_<0.2>Te was measured by TOF.The mobilty of electrons and holes were limited by so-called trap-controlled. The trap energies are E_C-0.03 and E_V+0.14eV,respectively.
4.The density of interface states, N_<SS>, of ZnSe/GaAs reduces by one order by suitable pretrearment of the substrate. N_<SS>, _<min> under the midgap of GaAs is 1x10^<11>cm^<-2>eV^<-1>.
5.MEE/ALE-ZnSe/GaAs with the highest quality can be grown by the mode of 1/4 ML growth per one supply of the element.
6.The barrier height at the re-grown homo-interface of MBE-ZnSe on GaAs is 0.7eV.
7.The time-resolved PL measurements were performed for S1 and S2 emission bands of superlattices consists of ZnSe and ultra thin ZnTe. Both bands involve shallow component, which can be further decomposed into each a first and slow band.
(1) The first bands are attributed to excitions localized in the long-range potential fluctuations.
(2) The decay of the slow bands is found to be well described by a stretched exponential function

Report

(3 results)
  • 1997 Annual Research Report   Final Research Report Summary
  • 1996 Annual Research Report
  • Research Products

    (40 results)

All Other

All Publications (40 results)

  • [Publications] K.Suzuki: "Acceptor defeets and anuealing behaviorin indium doped・・・・" J.Cryst.Growth. 159. 388-391 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Suzuki: "Drift incbility in chlorinedoped Ca0.8Zn0.2Te" J.Cryst.Growth. 159. 406-409 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] N.Takojima: "Emission mechanism of blue and green bands in ultrothin・・・" J.Cryst.Growth. 159. 489-492 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Suzuki: "Driftmobility and photoluminescens measurementson・・・" J.Elec.Materials. 25. 1241-1246 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 今井 和明: "Clドープ ZnSe_<1-x>Tex混晶膜の光学的性質" 北海道工業大学研究紀要. 25. 267-273 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 澤田 孝幸: "MBE-ZnSe/Go.As基板界面およびZnSe再成長ホモ界面の・・・" 北海道工業大学研究紀要. 25. 275-282 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Y.Yawagata: "Characterization of epitaxial ZnSe/GaAs (100)・・・" Jpn.J.Appl.Phys.36. 56-65 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] N.Chiba: "Growth rate and photoluminescence properties of MEE-ZnSe" phys.stat.sol.(a). 160. 115-119 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Sawada: "Formation and control of MBE-ZnSelGoAs heterointerface・・・" Appl.Surface Sci.117/118. 477-483 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Suzuki: "Time-resolved photoluminescence measuremen ts on ZnSeZnTe・・・" phys.stat.S01. (b). 202. 1013-1020 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Suzuki: "Stretched-exponential decay of the luminescence in・・・" Solid State Communi.105. 571-575 (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 澤田 孝幸: "GaNショットキーおよび絶縁膜/GaN界面の電気的特性評価" 北海道工業大学研究紀要. 26(予定). (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 今井 和明: "二重サブバンド構造ZnSe-ZnTe超格子の光学的特性-波長変換効果-" 北海道工業大学研究紀要. 26(予定). (1998)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Suzuki: "Recombination Kinetics of S1 and S2 bands in ZnSe・・ZnTe・・・" to be published in J.Cryst.Growth.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] M.Sawada: "Electrical characterization of n-GaN Schottky and ・・・" to be published in J.Cryst.Growth.

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] 斉藤 博: "入門固体物性" 共立出版株式会社, 229 (1997)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Suzuki et al: "Acceptor defects and annealing behavior in indium doped Cd_<1-X>Zn_XTe (x>0.7)" J.Cryst.Growth. vol.159. 388-391 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Suzuki et al.: "Drift mobilities in chlorine doped Cd_<0.8>Zn_<0.2>Te" J.Cryst.Growth. vol.159. 406-409 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] N.Takojima et al.: "Emission mechanism of blue and green bands in ultrathin ZnSe-ZnTe superlattices" J.Cryst.Growth. vol.159. 489-492 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Suzuki et al.: "Drift mobility and photoluminescence measurements on high resistivity Cd_<1-X>Zn_XTe crystals grown from Te-rich solution" J.Elec.Materials. vol.25. 1241-1246 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Imai et al.: "Optical properties of Cl doped ZnSe_<1-X>Te_X alloys" Memoirs of Hokkaido institute of Technology. No.25. 267-273 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Sawada et al.: "Characterization of MBE-ZnSe/GaAs substrate hetero-interfaces and ZnSe/ZnSe re-grown homo-interfaces" Memoirs of Hokkaido institute of Technology. No.25. 275-282 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] Y.Yamagata et al.: "Characterization of epitaxial ZnSe/GaAs (100) interface properties and their control by (HF+Se) -pretreatment" Jpn.J.Appl.Phys. vol.36. 56-65 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] N.Chiba et al.: "Growth rate and photoluminescence properties of MEE-ZnSe" phys.stat.sol.(a). vol.160. 115-119 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Sawada et al.: "Formation and control of MBE-ZnSe/GaAs heterointerface and regrown homointerface" Appl.Surface Sci.vol.117/118. 477-483 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Suzuki et al.: "Time-resolved photoluminescence measurements on ZnSe-ZnTe superlattice" phys.stat.sol.(b). vol.202. 1013-1020 (1997)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Suzuki et al.: "Stretched-exponential decay of the luminescence in ZnSe-ZnTe superlattices" Solid State Communi.vol.105. 571-575 (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] T.Sawada et al.: "Elecctrical characterization of GaN Schottky and insulator/GaN interface" Memoirs of Hokkaido Institute of Technology. No.26(in press). (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Imai et al.: "Optical properties of ZnSe-ZnTe superlattices with dual subbands structure : Up-conversion effect" Memoirs of Hokkaido institute of Technologys. No.26(in press). (1998)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] K.Suzuki et al.: "Recombination kinetics of S1 and S2 bands in ZnSe-ZnTe superlattices" (to be published) J.Cryst.Growth.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] M.Sawada et al.: "Electrical characterization of n-GaN Schottky and PCVD-SiO_2/n-GaN interfaces" Proc.2nd Int'l.Conf.Nitride Semicond., (1997)pp.482-484, and also to be published in J.Cryst.Growth.

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1997 Final Research Report Summary
  • [Publications] N.Chiba: "Growth rate and photoluminescence properties of MEE-ZnSe" phys.stat.sol.(a). 160. 115-119 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] T.Sawada: "Formation and control of MBE-ZnSe/GaAs heterointerface and regrowth…" Appl.Surface Sci.117/118. 477-483 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Suzuki: "Time-resolved photoluminescence measurments of ZnSe-ZnTe…" Phys.stat.sol.(b). 202. 1013-1020 (1997)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Suzuki: "Stretched-exponentialdecay of the luminescence in ZnSe-ZnTe…" Solid State Communi.105. 571-575 (1998)

    • Related Report
      1997 Annual Research Report
  • [Publications] K.Suzuki: "Acceptor defects and annealing behavior in indium doped CdZnTe" J.Crystal Growth. 159. 388-391 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] N.Takojima: "Emission medanism of blue and green bandin ultrathin ZnSe-ZnTe superlattice" J.Crystal Growth. 159. 489-492 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] K.Suzuki: "Driftmobility and phetduminescence measurements on high resistivity CdZnTe" J.Electro.Materials. 25. 1241-1246 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] K.Suzuki: "Drift mobility in chlorine doped Cd_<0.8>Zn_<0.2>Te" J.Crystal Growth. 159. 406-409 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Y.Yamagata: "Characterization of epitaxial ZnSe/GaAs (100) nterface properties…" Japan J.Appl.Phys.36. 56-65 (1997)

    • Related Report
      1996 Annual Research Report

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Published: 1996-04-01   Modified: 2016-04-21  

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