Optical Stark Effect in Quantum Dots for Exciton Confinement Regime

• Project/Area Number: 20740175
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Condensed matter physics I
• Research Institution: Osaka University
• Principal Investigator: MIYAJIMA Kensuke Osaka University, 大学院・基礎工学研究科, 助教 (20397764)
• Project Period (FY): 2008 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000); Fiscal Year 2009: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000); Fiscal Year 2008: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
• Keywords: 光物性 / 量子ドット / 物性実験 / ナノ材料 / 励起子

Research Abstract

The purpose of this research is to observe an optical Stark effect in a quantum dots for exciton confinement regime by utilizing a transition between exciton Rydberg states. I measured Rydberg excited states of excitons and biexcitons in CuCl bulk and quantum dots. The excited biexciton state composed of 1s and 2p excitons was observed for the first time for a semiconductor bulk crystal. In addition, the transient absorption energies for the same transition processes in CuCl quantum dots are higher than those in the bulk crystals.

Research Products

• [Journal Article] Superfluorescent Pulsed Emission from Biexcitons in an Ensemble of CuCl Quantum Dots (2010)
  • Author(s): K. Miyajima, S. Saito, M. Ashida, T. Itoh
  • Journal Title: Mater. Res. Soc. Symp. Proc. vol.1208E
  • Peer Reviewed
• [Journal Article] 多孔質アモルファスSiCの発光スペクトル (2009)
  • Author(s): 土岐貴弘、宮島顕祐、伊藤正、D.T. Cao、C. Tuan-Anh、L.T. Quynh-Ngan、N.T. Thu-Ha
  • Journal Title: 第20回光物性研究会論文集 Pages: 229-232
• [Journal Article] CuCl量子ドットにおける特異な励起子分子発光 (2009)
  • Author(s): 角野翼、宮島顕祐、齋藤伸吾、芦田昌明、伊藤正
  • Journal Title: 第20回光物性研究会論文集 Pages: 397-400
• [Journal Article] CuCl量子ドットにおける励起子及び励起子分子励起状態の閉じ込め効果 (2009)
  • Author(s): 吉岡貴章, 宮島顕祐, Le Quang Phuong, 芦田昌明, 伊藤正
  • Journal Title: 第19回光物性研究会論文集 Pages: 134-134
• [Journal Article] Superfluorescent pulsed emission from biexcitons in an ensemble of semiconductor quantum dots (2009)
  • Author(s): K. Miyajima, Y. Kagotani, S. Saito, M. Ashida, T. Itoh
  • Journal Title: J. Phys.: Condensed Matter 21
  • Peer Reviewed
• [Journal Article] Infrared transient absorption spectra for excited transition of excitons and biexcitons in CuCl (2009)
  • Author(s): T. Yoshioka, K. Miyajima, M. Ashida, T. Itoh
  • Journal Title: physica status solidi (c) 6 Pages: 296-299
  • Peer Reviewed
• [Journal Article] Itoh, Magnetic-field induced mixing of singlet and triplet excitons confined in CuCl quantum (2009)
  • Author(s): K. Miyajima, Y. Umemura, K. Katayama, M. Ashida, T. Itoh
  • Journal Title: physica status solidi (c) 6 Pages: 53-59
  • Peer Reviewed
• [Journal Article] Magnetic-field induced mixing of singlet and triplet excitons confined in CuCl quantum dots (2009)
  • Author(s): Kensuke Miyajima, Yuna Umemura, Kouichi Katayama, Masaaki Ashida, and Tadashi Itoh
  • Journal Title: physica status solidi (c) 6 Pages: 53-56
  • Peer Reviewed
• [Journal Article] Infrared transient absorption spectra for excited transition of excitons and biexcitons in CuCl (2009)
  • Author(s): Takaaki Yoshioka, Kensuke Miyajima, Masaaki Ashida, and Tadashi Itoh
  • Journal Title: physica status solidi (c) 6 Pages: 296-299
  • Peer Reviewed
• [Presentation] CuCl量子ドットにおける特異な励起子分子発光 (2009)
  • Author(s): 角野翼、宮島顕祐、齋藤伸吾、芦田昌明、伊藤正
  • Organizer: 第20回光物性研究会
  • Place of Presentation: 大阪市立大学
  • Year and Date: 2009-12-12
• [Presentation] 多孔質アモルファスSiCの発光スペクトル (2009)
  • Author(s): 土岐貴弘、宮島顕祐、伊藤正、D.T. Cao、C. Tuan-Anh、L.T. Quynh-Ngan、N.T. Thu-Ha
  • Organizer: 第20回光物性研究会
  • Place of Presentation: 大阪市立大学
  • Year and Date: 2009-12-12
• [Presentation] CuC1量子ドットにおける特異な励起子分子発光 (2009)
  • Author(s): 角野翼、宮島顕祐、齋藤伸吾、芦田昌明、伊藤正
  • Organizer: 第20回光物性研究会
  • Place of Presentation: 大阪市立大学(大阪府)
  • Year and Date: 2009-12-12
• [Presentation] 多孔質アモルファスSiCの発光スペクトル (2009)
  • Author(s): 土岐貴弘、宮島顕祐、伊藤正、D.T.Cao, C.Tuan-Anh, L.T.Quynh-Ngan, N.T.Thu-Ha
  • Organizer: 第20回光物性研究会
  • Place of Presentation: 大阪市立大学(大阪府)
  • Year and Date: 2009-12-12
• [Presentation] Superfluorescent pulsed emission from biexcitons in an ensemble of CuCl quantum dots (2009)
  • Author(s): K. Miyajima, S. Saito, M. Ashida, T. Itoh
  • Organizer: Materials Research Society(MRS) Fall Meeting
  • Place of Presentation: 米国ボストン
  • Year and Date: 2009-12-01
• [Presentation] Superfluorescent pulsed emission from biexcitons in an ensemble of CuC1 quantum dots (2009)
  • Author(s): K.Miyajima, S.Saito, M.A shida, T.Itoh
  • Organizer: Materials Research Society(MRS) Fall Meeting
  • Place of Presentation: Boston, U.S.A
  • Year and Date: 2009-12-01
• [Presentation] Exciton lifetime in CuCl quantum dots embedded in NaCl matrix under external magnetic field (2009)
  • Author(s): D. Ueda, K. Miyajima, M. Ashida, T. Itoh
  • Organizer: International Workshop on Advanced Materials and Nanotechnology 2009
  • Place of Presentation: ベトナムハノイ
  • Year and Date: 2009-11-24
• [Presentation] Exciton lifetime in CuC1 quantum dots embedded in NaC1 matrix under external magnetic field (2009)
  • Author(s): D.Ueda, K.Miyajima, M.Ashida, T.Itoh
  • Organizer: International Workshop on Advanced Materials and Nanotechnology 2009
  • Place of Presentation: Hanoi, Vietnam
  • Year and Date: 2009-11-24
• [Presentation] Infrared Transient Absorption Spectra for Excited State Transition of Excitons and Biexcitons in CuCl (2009)
  • Author(s): T. Yoshioka, K. Miyajima, M. Ashida, T. Itoh
  • Organizer: 4th Handai Nanoscience and Nanotechnology International Symposium
  • Place of Presentation: 大阪大学
  • Year and Date: 2009-09-29
• [Presentation] Cathodoluminescence of SiC Nanotubes (2009)
  • Author(s): T. Doki, K. Miyajima, M. Ashida, T. Itoh
  • Organizer: 5th Handai Nanoscience and Nanotechnology International Symposium
  • Place of Presentation: 大阪大学
  • Year and Date: 2009-09-02
• [Presentation] Cathodoluminescence of SiC Nanotubes (2009)
  • Author(s): T.Doki, K.Miyajima, M.Ashida, T.Itoh
  • Organizer: 5th Handai Nanoscience and Nanotechnology International Symposium
  • Place of Presentation: 大阪大学(大阪府)
  • Year and Date: 2009-09-02
• [Presentation] CuCl量子ドットにおける励起子及び励起子分子励起状態の閉じ込め効果 (2008)
  • Author(s): 吉岡貴章, 宮島顕祐, Le Quang Phuong, 芦田昌明, 伊藤正
  • Organizer: 第19回光物性研究会
  • Place of Presentation: 大阪市立大学
  • Year and Date: 2008-12-05
• [Presentation] Large Exciton g-factor of CuCl Quantum Dots Embedded in NaCl crystal (2008)
  • Author(s): F. Yamada, K. Miyajima, K. Katayama, M. Ashida, T. Itoh
  • Organizer: 4th Handai Nanoscience and Nanotechnology International Symposium
  • Place of Presentation: 大阪大学
  • Year and Date: 2008-09-29
• [Presentation] CuCl量子ドットにおける励起子及び励起子分子励起状態の閉じ込め効果 (2008)
  • Author(s): 吉岡貴章、宮島顕祐、芦田昌明、伊藤正
  • Organizer: 日本物理学会2008年秋季大会
  • Place of Presentation: 岩手大学
  • Year and Date: 2008-09-21
• [Presentation] Superfluorescence of biexcitons confined in CuCl quantum dots (2008)
  • Author(s): K. Miyajima, Y. Kagotani, S. Saito, M. Ashida, T. Itoh
  • Organizer: the 15th International Conference on Luminescence and Optical Spectroscopy of Condensed Matter
  • Place of Presentation: フランスリヨン
  • Year and Date: 2008-07-10
• [Presentation] Infrared transient absorption spectra for excited transition of excitons and biexcitons in CuCl (2008)
  • Author(s): T. Yoshioka, K. Miyajima, M. Ashida, T. Itoh
  • Organizer: the 8th International Conference on Excitonic Processes in Condensed Matter
  • Place of Presentation: 京都大学
  • Year and Date: 2008-06-26
• [Presentation] Magnetic-field induced mixing of singlet and triplet excitons confined in CuCl quantum (2008)
  • Author(s): K. Miyajima, Y. Umemura, K. Katayama, M. Ashida, T. Itoh
  • Organizer: the 8th International Conference on Excitonic Processes in Condensed Matter
  • Place of Presentation: 京都大学
  • Year and Date: 2008-06-24
• [Presentation] Triplet states of free and bound excitons confined in CuCl quantum dots (2008)
  • Author(s): K. Miyajima, Y. Umemura, K. Katayama, M. Ashida, T. Itoh
  • Organizer: the 5th International Conference on Semiconductor Quantum Dots
  • Place of Presentation: 韓国慶州
  • Year and Date: 2008-05-13
• [Presentation] Triplet states of free and bound excitons confined in CuCl quantum dots (2008)
  • Author(s): K. Miyajima, Y. Umemura, K. Katayama, M. Ashida, and T. Itoh
  • Organizer: the 5th International Conference on Semiconductor Quantum Dots
  • Place of Presentation: Gyeongju, Korea
• [Presentation] Magnetic-field induced mixing of singlet and triplet excitons confined in CuCl quantum dots (2008)
  • Author(s): K. Miyajima, Y. Umemura, F. Yamada, K. Katayama, M. Ashida, T. Itoh
  • Organizer: the 8th International Conference on Excitonic Processes in Condensed Matter
  • Place of Presentation: 京都大学
• [Presentation] Superfluorescence of biexcitons confined in CuCl quantum dots (2008)
  • Author(s): K. Miyajima, Y. Kagotani, S. Saito, M. Ashida, T. Itoh
  • Organizer: the 15th International Conference on Luminescence and Optical Spectroscopy of Condensed Matter
  • Place of Presentation: Lyon, France
• [Presentation] Infrared Transient Absorption Spectra for Excited State Transition of Excitons and Biexcitons in CuCl (2008)
  • Author(s): T. Yoshioka, K. Miyajima, M. Ashida and T. Itoh
  • Organizer: 4th Handai Nanoscience and Nanotechnology International Symposium
  • Place of Presentation: 大阪大学
• [Remarks]
  • URL: http://laser.mp.es.osaka-u.ac.jp/