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Study on Supcr-High Efficicncy InGaAs/InP Solar Ccll With Controlled Surface

Research Project

Project/Area Number 06650345
Research Category

Grant-in-Aid for General Scientific Research (C)

Allocation TypeSingle-year Grants
Research Field Electronic materials/Electric materials
Research InstitutionHokkaido University

Principal Investigator

SAITOH Toshiya  Hokkaido University, Research Center for Interface Quantum Electronics, Associate Professor, 量子界面エレクトロニクス研究センター, 助教授 (70241396)

Co-Investigator(Kenkyū-buntansha) SAWADA Takayuki  Hokkaido Institute of Technology, Faculty of Engineering, Professor, 応用電子工学科, 教授 (40113568)
AKAZAWA Masamichi  Hokkaido University, Faculty of Engineering, Associate Professor, 工学部, 助教授 (30212400)
YOH Kanji  Hokkaido University, Research Center for Interface Quantum Electronics, Professo, 量子界面エレクトロニクス研究センター, 教授 (60220539)
Project Period (FY) 1994 – 1995
Project Status Completed (Fiscal Year 1995)
Budget Amount *help
¥2,300,000 (Direct Cost: ¥2,300,000)
Fiscal Year 1995: ¥800,000 (Direct Cost: ¥800,000)
Fiscal Year 1994: ¥1,500,000 (Direct Cost: ¥1,500,000)
KeywordsSurface recombination velocity / Photoluminescence / Interface state density / Solar cell / InGaAs / InAlAs / InAs dot / 高濃度ドープ層 / 電極界面再結合 / Stranski-Krastanow成長 / インジウムガリウム砒素 / インジウムアルミニウム砒素 / 再成長
Research Abstract

Solar cells using InP and its related materials are drawing attention for sources of electricity of man-made satellites. However, the surface recombination velocity at InP surface is known to be larger than that at conventional Si solar cell surface. In this study, firstly, contactless and non-destructive measurements of surface state density distribution of InP surface and its related materials are carried out for the improvement of passivation technology. The measurement of surface recombination velocity under sunlight are done, for the first time, for various sunlight intensity using photoluminescence based measurement technique. The surface recombination velocity is found to depend strongly on sunlight intensity and to be greatly decreased under concentrated sunlight. The state density at InGaAs/SiO_2 interface is found to be greatly reduced by using Si interface control layr. The hetero interface state density is also measured by the photoluminescence technique. It is found that continuously grown InAlAs thin layr and AlGaAs thin layr are suitable for the window layr ofInGaAs and GaAs solar cells, respectivcly. InAs dots formation is also investigated for the development of simple fabrication process of point contact solar cells. Growth of InAs dots on (100) GaAs shows that the contact area can be reduced to 25% of tofal area. Regular array formation of InAs dots is carried out, for the first time, on (111) B GaAs patterned substrates. The control of area and density of contact is found to be possible by using the growth technique.

Report

(3 results)
  • 1995 Annual Research Report   Final Research Report Summary
  • 1994 Annual Research Report
  • Research Products

    (22 results)

All Other

All Publications (22 results)

  • [Publications] T. Saitoh: "In-Sitn Photoluminescence and Capacitance-Voltage Characterization of InAlAs/InGaAs Regrown Heterointerfacs by Molecular Beam Epitaxy." J. Cryst. Growth. 150. 96-100 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T. Saitoh: "Determination of Interface State Density Distribution and Surface Recombimation Velocity on Passivated Scmiconductor Surfaces by Photoluminescece Surface State Spectroscopy." Matcrials Sciebce Forum. 185-188. 53-58 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T. Saitoh: "Regular Array Formation of Self-Assembled InAs Dots Grown on Patterned (III) B GaAs Substrate by MBE" Extended Abstract of the 1995 International Conference of solid State Devieces and Materials.1087-1088 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T. Saitoh: "A Novel In-situ Characterization Method of Quantum Structures by Excitation Power Dependence of Photoluminescence" Inst. Phys. Conf. Ser. 136. 795-800 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T. Saitoh: "In Situ Characterization of AlGaAs/GaAs Quantum Well Interface by Photoluminescence Surface State Spectroscopy" Control of Semiconductor Interfaces. 109-114 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T. Saitoh: "Measurement of Surfa Recombination Velocity of Silicon Wafers under Sunlight Condition by Novel Photoluminescence Surface Stare Spectroscopy" Solar Energy Materials and Solar Cells. 34. 161-167 (1994)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Saitoh, H.Tomozawa, T.Nakagawa, H.Takeuchi, H.Hasegawa: ""In-situ Photoluminescence and Capacitance-Voltage Characterization of InAlAs/InGaAs Regrown Heterointrfaces by Molecular Beam Epitaxy"" J.Crystal Growth. 150. 96-100 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Saitoh and H.Hasegawa: ""Determination of Interface State Density Distribution and Surface Recombination Velocity on Passivated Semiconductor Surfaces by Photoluminescence Surface State Spectroscopy"" Materials Science Forum. Vol.185-188. 53-58 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Saitoh, A.Tanimura and K.Yoh: ""Regular Array Formation of Self-Assembled InAs Dots Grown on Patterned(111)B GaAs Substrate by MBE"" Extended Abstract of the 1995 Internationl Conference of Solid State Devices and Materials, (Osada, 1995). 1087-1088

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Saitoh, Y.Nishimoto and H.Hasegawa: ""Measurement of Surface Recombination Velocity of Silicon Wafers under Sunlight Condition by Novel Photoluminescence Surface State Spectroscopy"" Solar Energy Materials and Solar Cells.34. 161-167 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Saitoh, T.Sawada and H.Hasegawa: ""In -Situ Characterization of AlGaAs/GaAs Quantum Well Interfaces by Photoluminescence Surface State Spectroseopy" Control of Semiconductor Interfaces, Elsevier Science. 109-114 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Saitoh, H.Hasegawa and T.Sawada: ""A Novel In-situ Charaeterization Method of Quantum Structures by Excitation Power Dependence of Photoluminescence"" Inst.Phys.Conf.Ser.136. 795-800 (1994)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1995 Final Research Report Summary
  • [Publications] T.Saitoh: "In-Situ Photoluminescence and Capacitance-Voltage Characterization of InAlAs/InGaAs Regrown Heterointerfaces by Molecular Beam Epitaxy.," J.Cryst.Growth. 150. 96-100 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] T.Saitoh: "Determination of Interface State Density Distribution and Surface Recombination Velocity on Passivated Semiconductor Surfaces by Photoluminescence Surface State Spectroscopy.," Materials Science Forum. 185-188. 53-58 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] T.Saitoh: "Optical Characterization of InAs Quantum Dots Fabricated by Molecutar Beam Epitaxy" Jpn.J.Appl.Phys. 35. (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] T.Saitoh: "Regular Array Formation of Self-Assembled InAs Dots Grown on Patterned(111)B GaAs Substrate by MBE" Jpn.J.Appl.Phys. 35. (1996)

    • Related Report
      1995 Annual Research Report
  • [Publications] T.Saitoh: "A Novel In-situ Characterization Method of Quantum Structures by Excitation Power Dependence of Photoluminescence" Inst.Phys.Conf.Ser. 136. 795-800 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] T.Saitoh: "In-Situ Characterization of AlGaAs/GaAs Quantum Well Interfaces by Photoluminescence Surface State Spectroscopy" Control of Semiconductor Interfaces. 109-114 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] T.Saitoh: "Measurement of Surfa Recombination Velocity OF Silicon Wafers under Sunlight Condition by Novel Photoluminescence Surface State Spectroscopy" Solar Energy Materials and Solar Cells. 34. 161-167 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] T.Saitoh: "In-Situ Photoluminescence and Capacitance-Voltage Characterization of InAlAs/InGaAs Regrown Heterointerfaces by MBE" Workbook of 8th Intermational Conference on Molecular Beam Epitaxy. 409-410 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] K.Yoh: "InAs Field-Effect Transistors with Platinum Schottky Gate" Extended Abstracts of the 1994 International Conference on Solid-State Devices and Materials,. 787-789 (1994)

    • Related Report
      1994 Annual Research Report
  • [Publications] K.Yoh: "Optimized InAs Quantum Effect Device Structures Grown by Molecular Beam Epitaxy" Workbook of 8th International Conference on Molecular Beam Epitaxy. 458-459 (1994)

    • Related Report
      1994 Annual Research Report

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Published: 1994-04-01   Modified: 2016-04-21  

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