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A research on full-color LED using UV light emitting devices

Research Project

Project/Area Number 07555102
Research Category

Grant-in-Aid for Scientific Research (A)

Allocation TypeSingle-year Grants
Section試験
Research Field Electronic materials/Electric materials
Research InstitutionThe University of Tokushima

Principal Investigator

SAKAI Shiro  The Univ.of Tokushima, Faculty of Eng.Professor, 工学部, 教授 (20135411)

Co-Investigator(Kenkyū-buntansha) YUASA Takayuki  Sharp Cent.Res.Lab., Senior Researcher, 第一研究部, 副主任
NAOI Yoshiki  The Univ.of Tokushima, Faculty of Eng.Lecture, 工学部, 講師 (90253228)
Project Period (FY) 1995 – 1996
Project Status Completed (Fiscal Year 1996)
Budget Amount *help
¥7,600,000 (Direct Cost: ¥7,600,000)
Fiscal Year 1996: ¥2,200,000 (Direct Cost: ¥2,200,000)
Fiscal Year 1995: ¥5,400,000 (Direct Cost: ¥5,400,000)
KeywordsGaN / InGaN / Bulk GaN / MOCVD / LED / Semiconductor lasers / Homoepitaxy / Dislocation / ワイドギャップ半導体 / 厚膜 / 昇華法 / 青色発光素子
Research Abstract

Although a blue-to UV nitride light emitting devices are realized, many problems still remain unsolved. The LED is most commonly fabricated by growing InGaN/AlGaN double-heterostructure on sapphire substrate by MOCVD technique. However, the growth critically depends on the substrate annealing prior to the growth and the deposition conditions of the low-temperature buffer layrs making the growth extremely difficult. In addition, the misfit dislocation was recently shown to work as a non-radiative recombination center. Therefore, the elimination of the dislocation can substantially improve LED efficiency and lower the threshold current of the lasers. In this research, the growth of bulk GaN and a homoepitaxy by MOCVD were tried and investigated in detail. The following topics were investigated.
1.Growth of thick GaN and bulk GaN by sublimation method : A GaN with a thickness of several tens of mum to several hundred of mum on sapphire and a bulk GaN with the size of several hundreds of mum to several mm were obtained. A technique to grow bulk GaN in the selective area on the substrate was developed, and the device processing of the bulk GaN became possible.
2.Growth of InGaN on sapphire : GaN and InGaN films were grown on sapphire by MOCVD,and the layrs were characterized. Especially, the formation mechanism of the inhomogeneity in InGaN was investigated in detail.
3.Homoepitaxial growth : GaN and GaN/InGaN double-heterostructure were grown on bulk GaN by MOCVD and the grown layrs were characterized. It wasfound that the growth mode on the bulk substrate was very different of that on the sapphire substrate.
Above research results provided the basis for fabricating super-high-efficiency-LED and nitride lasers on a bulk GaN substrate.

Report

(3 results)
  • 1996 Annual Research Report   Final Research Report Summary
  • 1995 Annual Research Report
  • Research Products

    (46 results)

All Other

All Publications (46 results)

  • [Publications] S.Nakajima, T.Yang and S.Sakai: "Valence-Band-Edge Energy of Group-III, Nitride Alloy Semiconductors" Jpn.J.Appl.Phys.34-No.5. 2213-2215 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Yang, S.Nakajima and S.Sakai: "Electronic Structures of Wurtzite GaN, InN and their Alloy Ga_<l-x>In_x N Calculated by the Tight-Binding Method" Jpn.J.Appl.Phys.34-No.11. 5912-5921 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] Nakajima, T.Yang and S.Sakai: "Electronic Structure of Ga_<l-x>ln_xN by the Tight-Binding Method with Nearest-Neighbor s, p and d and Second-Neighbor s and p Interactions" International Conference on Silicon Carbide and Rerated Materials-1995, Institute of Physics Conference Series Number 142. 947-950 (1995)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S.Kurai, Y.Naoi, T.Abe, S.Ohmi and S.Sakai: "Photopumped Stimulated Emission from Homoepitaxial GaN Grown on Bulk GaN Prepared by Sublimation Method" Jpn.J.Appl.Phys.35-No.1B. L77-79 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S.Kurai, T.Abe, Y.Naoi and S.Sakai: "Growth and Characterization of Thick GaN by Sublimation Method and Homoepitaxial Growth by MOCVD" Jpn.J.Appl.Phys.35-No.3. 1637-1640 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Okada, S.Kurai, Y.Naoi, K.Nishino, F.Inoko and S.Sakai: "Tarnsmission Electron Microscopy of Sublimation-Grown GaN Single Crystal and GaN Homoepitaxial Film" Jpn.J.Appl.Phys.35-No.11B. 1318-1320 (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Sato, Y.Naoi and S.Sakai: "Structural Analysis of GaN and GaN/InGaN/GaN DH Structures on Sapphire (0001) Substrate grown by MOCVD" Proceeding of MRS Symp..1996. (in press). (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S.Sakai, S.Kurai, K.Nishino, K.Wada, H.Sato and Y.Naoi: "Growth of GaN by Sublimation Technique and Homoepitaxial growth by MOCVD" Proceeding of MRS Symp..1996. (in press). (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Sato, M.R.Sarkar, Y.Naoi and S.Sakai: "XPS Measurement of Valence Band Discontinuity at GaP/GaN Heterointerfaces" Solid State Electronics. (in press). (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Naoi, Y.Naoi and S.Sakai: "MOCVD Growth of InAsN for Infrared Applications" Solid State Electronics. (in press). (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S.Kurai, K.Nishino and S.Sakai: "Nucleation Control in the Growth of Bulk Gan by Sublimation method" Jpn.J.Appl.Phys.(in press). (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Sato, Y.Naoi and S.Sakai: "X-ray Diffraction Analysis of GaN and GaN/InGaN/GaN Double-Hetero Structures Grown on Sapphire Substrate by MOCVD" Jpn.J.Appl.Phys.(in press). (1996)

    • Description
      「研究成果報告書概要(和文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S.Nakajima, T.Yang and S.Sakai: "Valence-Band-Edge Energy of Group-III,Nitride Alloy Semiconductors" Jpn.J.Appl.Phys.Vol.34, No.5. 2213-2215 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Yang, S.Nakajima and S.Sakai: "Electronic Structures of Wurtzite GaN,InN and their Alloy Ga_<1-X>In_XN Calculated by the Tight-Binding Method" Jpn.J.Appl.Phys.Vol.34, No.11. 5912-5921 (1995)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S.Nakajima, T.Yang and S.Sakai: "Electronic Structures of Ga_<1-X>In_XN by the Tight-Binding Method with Nearest-Neighbor s, p and d and Second-Neighbor s and p Interactions" International Conference on Silicon Carbide and Rerated Materials-1995 Institute of Physics Conference Series. No.142. 947-950

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S.Kurai, Y.Naoi, T.Abe, S.Ohmi and S.Sakai: "Photopumped Stimulated Emission from Homoepitaxial GaN Grown on Bulk GaN Prepared by Sublimation Method" Jpn.J.Appl.Phys.Vol.35, No.1B. L77-79 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S.Kurai, T.Abe, Y.Naoi and S.Sakai: "Growth and Characterization of Thick GaN by Sublimation Method and Homoepitaxial Growth by MOCVD" Jpn.J.Appl.Phys.Vol.35, No.3. 1637-1640 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] T.Okada, S.Kurai, Y.Naoi, K.Nishino, F.Inoko and S.Sakai: "Tarnsmission Electron Microscopy of Sublimation-Grown GaN Single Crystal and GaN Homoepitaxial Film" Jpn.J.Appl.Phys.Vol.35, No.10B. L1318-1320 (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Sato, Y.Naoi and S.Sakai: "Structural Analysis of GaN and GaN/InGaN/GaN DH Structures on Sapphire (0001) Substrate grown by MOCVD" Proceeding of MRS Symp.(in press). (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S.Sakai, S.Kurai, K.Nishino, K.Wada, H.Sato and Y.Naoi: "Growth of GaN by Sublimation Technique and Homoepitaxial growth by MOCVD" Proceeding of MRS Symp.(in press). (1996)

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Sato, M.R.Sarkar, Y.Naoi and S.Sakai: "XPS Measurement of Valence Band Discontinuity at GaP/GaN Heterointerfaces" Solid State Electronics. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Naoi, Y.Naoi and S.Sakai: "MOCVD Growth of InAsN for Infrared Applications" Solid State Electronics. (in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S.Kurai, K.Nishino and S.Sakai: "Nucleation Control in the Growth of Bulk Gan by Sublimation method." Jpn.J.Appl.Phys.(in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] H.Sato, Y.Naoi and S.Sakai: "X-ray Diffraction Analysis of GaN and GaN/InGaN/GaN Double-Heterto Structures Grown on Sapphire Substrate by MOCVD" Jpn.I.Appl.Phys.(in press).

    • Description
      「研究成果報告書概要(欧文)」より
    • Related Report
      1996 Final Research Report Summary
  • [Publications] S.Nakajima,T.Yang and S.Sakai: "Valence-Band-Edge Energy of Group-III,Nitride Alloy Semiconductors" Jpn.J.Appl.Phys.34-No.5. 2213-2215 (1995)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Yang,S.Nakajima and S.Sakai: "Electronic Structures of Wurtzite GaN,InN and their Alloy Ga_<1-X>In_XN Calculated by the Tight-Binding Method" Jpn.J.Appl.Phys.34-No.11. 5912-5921 (1995)

    • Related Report
      1996 Annual Research Report
  • [Publications] Nakajima,T.Yang and S.Sakai: "Electronic Structure of Ga_<1-X>In_XN by the Tight-Binding Method with Nearest-Neighbor s,p and d and Second-Neighbor s and p Interactions" International Conference on Silicon Carbide and Rerated Materials-1995,Institute of Physics Conference Series Number 142. 947-950 (1995)

    • Related Report
      1996 Annual Research Report
  • [Publications] S.Kurai,Y.Naoi,T.Abe,S.Ohmi and S.Sakai: "Photopumped Stimulated Emission from Homoepitaxial GaN Grown on BUlk GaN Prepared by Sublimation Method" Jpn.J.Appl.Phys.35-No.1b. l77-79 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] S.Kurai,T.Abe,Y.Naoi and S.Sakai: "Growth and CXharacterization of Thick GaN by Sublimation Method and Homoepitaxial Growth by MOCVD" Jpn.J.Appl.Phys.35-No.3. 1637-1640 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] T.Okada,S.Kurai,Y.Naoi,K.Nishino,F.Inoko and S.Sakai: "Tarnsmission Electron Microscopy of Sublimation-Grown GaN Single Crystal and GaN Homoepitaxial Film" Jpn.J.Appl.Phys.35-No.11B. 1318-1320 (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] H.Sato,Y.Naoi and S.Sakai: "Structural Analysis of GaN and GaN/InGaN/GaN DH Structures on Sapphire(0001)Subastrate grown by MOCVD" Proceeding of MRS Symp.,1996. (in press). (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] S.Sakai,S.Kurai,K.Nishino,K.Wada,H.Sato and Y.Naoi: "Growth of GaN by Sublimation Technique and Homoepitaxial growth by MOCVD" Proceeding of MRS Symp.,1996. (in press). (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] H.Sato,M.R.Sarkar,Y.Naoi and S.Sakai: "XPS Measurement of Valence Band Discontinuity at GaP/GaN Heterointerfaces" Solid State Electlronics. (in press). (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] H.Naoi,Y.Naoi and S.Sakai: "MOCVD Growth of InAsN for Infrared Applications" Solid State Electronics. (in press). (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] S.Kurai,K.Nishino and S.Sakai: "Nucleation Control in the Growth of Bulk Gan by Sublimation method" Jpn.J.Appl.Phys.,. (in press). (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] H.Sato,Y.Naoi and S.Sakai: "X-ray Diffraction Analysis of GaN and GaN/InGaN/GaN Double-Hetero Structures Grown on Sapphire Substrate by MOCVD" Jpn.J.Appl.Phys.,. (in press). (1996)

    • Related Report
      1996 Annual Research Report
  • [Publications] Shiro Sakai: "Electronic structure of Ga_<lx>In_xN by the tight-binding method with nearcst-neighbor s,p and d and second neighbor s and p interactions" International Conference on Silicon Carbide and Related Materials-1995. 423-424 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Shiro Sakai: "Growth of Bulk and Thick GaN by Sublimation Method" 1995 Fall Meeting of the MRS.Symposium AAA. (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Shiro Sakai: "Homoepitaxial Growth of GaN on Thick GaN Substrates Prepared by Sublimation Method" Topical Workshop on III-V Nitrides. B6- (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Shiro Sakai: "XPS Measurement of Valance Band Discontinuity at GaP/GaN Heterointerfaces" Topical Workshop on III-V Nitrides. F8- (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Shiro Sakai: "Electronic Strutures of Group III Nitride Alloys calculated by the Tight-Binding Method" Topical Workshop on III-V Nitrides. P2- (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Shiro Sakai: "Valence-Band-Edge Energy of Group-III Nitride Alloy Semiconductors" Jpn.J.Appl.Phys.34-No.5A. 2213-2215 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Shiro Sakai: "Electronic Strutures of Wurtzite GaN,InN and Their Alloy Ga_<1-x>In_xN Calculated by the Tight-Binding Method" Jpn.J.Appl.Phys.34-No.11. 5912-5921 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Shiro Sakai: "Stimulated Emission from a Photopumped homoepitaxial GaN Grown by MOCVD on Bulk GaN Prepared by Sublimation Method" Proc of the Topical Workshop on III-V Nitrides. SP-6 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Shiro Sakai: "MOCVD Growth of InAsN for Infrared Application" Proc.of the Topical Workshop on II-V Nitrides. P-29 (1995)

    • Related Report
      1995 Annual Research Report
  • [Publications] Shiro Sakai: "Photopumped Stimulated Emission from Homoepitaxial GaN Grown on Bulk GaN Prepared by Sublimation Method" Jpn.J.Appl.Phys.Vol.35,No.1B. Part2. L77-79 (1996)

    • Related Report
      1995 Annual Research Report

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Published: 1995-04-01   Modified: 2016-04-21  

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