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Study of applied electrical field effect on semiconductor crystall growth mechanism from melt and crystal growth for x-ray detectors

Research Project

Project/Area Number 15560652
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeSingle-year Grants
Section一般
Research Field Properties in chemical engineering process/Transfer operation/Unit operation
Research InstitutionShizuoka University

Principal Investigator

OKANO Yasunori  Shizuoka University, Faculty of Engineering, Dept.of Materials Science & Chem.Eng., Professor, 工学部, 教授 (90204007)

Project Period (FY) 2003 – 2004
Project Status Completed (Fiscal Year 2004)
Budget Amount *help
¥3,100,000 (Direct Cost: ¥3,100,000)
Fiscal Year 2004: ¥1,400,000 (Direct Cost: ¥1,400,000)
Fiscal Year 2003: ¥1,700,000 (Direct Cost: ¥1,700,000)
KeywordsCrystal Growth / Electrical Field / Convection / Heat Transfer / Mass Transfer / Semiconductor
Research Abstract

Crystal growth by Liquid Phase Electroepitaxy was studied numerically and experimentally. Continuity, Navier-Stokes, Energy equations and Mass transfer equation considering electro-migration were descritized by control volume method and solved by SIMPLE technique. Numerical results show that substrate temperature is decreased by Peltie effect caused by electric application and natural convection is caused by the temperature distribution even if the system temperature was kept constant. In order to suppress the natural convection, magnetic field application is beneficial. However, holes are observed under strong magnetic fields. Therefore, effect of rotation, which has similar effect on suppression of convection to the magnetic field, on the liquid convection was investigated. Convection in the liquid was suppressed by Coliori force caused by rotation and concentration gradient near the growth interface must be steep because high density materials will be removed by centrifugal force. As the results, it can be expected that crystal growth rate becomes higher by applying rotation.
In the experiments, it was shown that Si, GaAs substrates reacted with liquid and it was concluded that CdTe substrate is required. CdTe crystal with 23 μm thickness was successfully grown on the CdTe substrate. Effect of growth temperature on the crystal quality was also investigated.

Report

(3 results)
  • 2004 Annual Research Report   Final Research Report Summary
  • 2003 Annual Research Report
  • Research Products

    (4 results)

All Other

All Journal Article (3 results) Publications (1 results)

  • [Journal Article] Numerical Simulation of Crystal Growth of CdZnTe by Vertical Gradient Freezing Method -Crucible Rotation Effect-

    • Author(s)
      Y.Kawaguchi, H.Yasuda, Y.Okano, S.Dost
    • Journal Title

      Int.J.Transport Phenomena (印刷中)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Numerical Simulation of Crystal Growth of CdZnTe by Vertical Gradient Freezing Method -Crucible Rotation Effect-

    • Author(s)
      Y.Kawaguchi, H.Yasuda, Y.Okano, S.Dost
    • Journal Title

      Int.J.Transport Phenomena (accepted)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      2004 Final Research Report Summary
  • [Journal Article] Numerical Simulation of Crystal Growth of CdZnTe by Vertical Gradient Freezing Method - Crucible Rotation Effect -

    • Author(s)
      Y.Kawaguchi, H.Yasuda, Y.Okano, S.Dost
    • Journal Title

      Int.J.Transport Phenomena (印刷中)

    • Related Report
      2004 Annual Research Report
  • [Publications] H.Minakuchi, Y.Okano, S.Dost: "A three dimensional numerical study of Marangoni convection in a floating full zone"International Journal of Materials and Product Technology. (発表予定). (2004)

    • Related Report
      2003 Annual Research Report

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Published: 2003-04-01   Modified: 2016-04-21  

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