Control and Structural Specific Function of Heterostructured Nanoparticles Assembly

• Project/Area Number: 15H06309
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Nanomaterials chemistry
• Research Institution: Kyoto University
• Principal Investigator: Masaki Saruyama 京都大学, 化学研究所, 特定助教 (50636628)
• Project Period (FY): 2015-08-28 – 2017-03-31
• Project Status: Completed (Fiscal Year 2016)
• Budget Amount: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000); Fiscal Year 2016: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000); Fiscal Year 2015: ¥1,430,000 (Direct Cost: ¥1,100,000、Indirect Cost: ¥330,000)
• Keywords: ナノ粒子 / 半導体 / ヘテロ接合 / 電荷分離 / 蛍光 / ヘテロ構造 / 光触媒 / ナノ材料 / 高効率太陽光発電材料・素子 / 表面・界面物性 / 電子移動 / 配列制御 / 光電変換 / pn接合

Outline of Final Research Achievements

We synthesized CuInS2 (core) /CdS (arms) nanotetrapods. Transient absorption spectroscopy showed that excited electrons generated in CuInS2 core transfer to CdS arms, and delocalized at whole tetrapod structure. We also synthesized CdSe (core) @ CdS (shell) with various shell thickness. Single dot spectroscopy revealed that CdS@CdS with thicker shell has higher radiative recombination rate of biexcitons.

Research Products

• [Journal Article] 半導体ヘテロ構造ナノ粒子のキャリアダイナミクス (2017)
  • Author(s): 猿山雅亮、坂本雅典、寺西利治
  • Journal Title: 光化学 Volume: 47 Pages: 145-151
  • NAID: 40021045988
• [Journal Article] Dynamics of Charged Excitons and Biexcitons in CsPbBr2 Perovskite Nanocrystals Revealed by Femtosecond Transient-absorption and Single-dot Luminescence Spectroscopy (2017)
  • Author(s): Naoki Yarita, Hirokazu Tahara, Toshiyuki Ihara, Tokuhisa Kawawaki, Ryota Sato, Masaki Saruyama, Toshiharu Teranishi, Yoshihiko Kanemitsu
  • Journal Title: J. Phys. Chem. Lett. Volume: 8 Issue: 7 Pages: 1413-1418
  • DOI: 10.1021/acs.jpclett.7b00326
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Coulomb-Enhanced Radiative Recombination of Biexcitons in Single Giant-Shell CdSe/CdS Core/Shell Nanocrystals (2017)
  • Author(s): Nao Hiroshige, Toshiyuki Ihara, Masaki Saruyama, Toshiharu Teranishi, and Yoshihiro Kanemitsu
  • Journal Title: Journal of Physical Chemistry Letters Volume: 8 Issue: 9 Pages: 1961-1966
  • DOI: 10.1021/acs.jpclett.7b00547
  • Peer Reviewed
• [Journal Article] Light-stimulated carrier dynamics of CuInS2/CdS heterostructured nanocrystals (2016)
  • Author(s): Masanori Sakamoto, Koki Inoue, Makoto Okano, Masaki Saruyama, Sungwon Kim, Yeong-Gi So, Koji Kimoto, Yoshihiko Kanemitsu and Toshiharu Teranishi
  • Journal Title: Nanoscale Volume: 印刷中
  • Peer Reviewed
• [Presentation] 遷移金属リン化物ベースコア＠シェルナノ粒子の合成と酸素生成触媒活性 (2017)
  • Author(s): 猿山雅亮、坂本雅典、秋山誠治、山田太郎、堂免一成、寺西利治
  • Organizer: 日本化学会第97春季年会
  • Place of Presentation: 慶応大学日吉キャンパス
  • Year and Date: 2017-03-16
• [Presentation] Synthesis of Cs4PbBr6 Perovskite Nanorods (2017)
  • Author(s): 水野弘樹、猿山雅亮、寺西利治
  • Organizer: 日本化学会第97春季年会
  • Place of Presentation: 慶応大学日吉キャンパス
  • Year and Date: 2017-03-16
• [Presentation] CsPbBr3ペロブスカイトナノ粒子の高速光学応答：バイエキシトンとトリオン (2017)
  • Author(s): 鎗田直樹、田原弘量、井原章之、川脇徳久、佐藤良太、猿山雅亮、寺西利治、金光義彦
  • Organizer: 第64回応用物理学会春季学術講演会
  • Place of Presentation: パシフィコ横浜
  • Year and Date: 2017-03-14
• [Presentation] 単一CdSe/CdSナノ粒子の励起子分子発光：クーロン相互作用による増強 (2017)
  • Author(s): 広重直、井原章之、猿山雅亮、寺西利治、金光義彦
  • Organizer: 第64回応用物理学会春季学術講演会
  • Place of Presentation: パシフィコ横浜
  • Year and Date: 2017-03-14
• [Presentation] 酸素生成触媒用リン化ニッケル＠酸化鉄ナノ粒子の合 成 (2016)
  • Author(s): 猿山雅亮、坂本雅典、秋山誠治、山田太郎、堂免一成、寺西利治
  • Organizer: 第26回日本MRS年次大会
  • Place of Presentation: 横浜開港記念会館
  • Year and Date: 2016-12-19
• [Presentation] Enhancement of Biexciton Emission in Giant CdSe/CdS Nanocrystals Revealed by Single Dot Spectroscopy - Implications for Light-Emitting Device Efficiencies (2016)
  • Author(s): Nao Hiroshige, Toshiyuki Ihara, Masaki Saruyama, Toshiharu Teranishi, and Yoshihiko Kanemitsu
  • Organizer: 2016 MRS Fall meeting
  • Place of Presentation: Boston, USA
  • Year and Date: 2016-11-27
  • Int'l Joint Research
• [Presentation] 単一 CdSe/CdSナノ粒子におけるカスケード発光分光：クーロン相互作用による励起子分子発光増大 (2016)
  • Author(s): 広重直、井原章之、猿山雅亮、寺西利治、金光義彦
  • Organizer: 日本物理学会 2016年秋季大会
  • Place of Presentation: 金沢大学
  • Year and Date: 2016-09-13
• [Presentation] CsPbBr3ペロブスカイトナノ粒子の作製と光学特性 (2016)
  • Author(s): 鎗田直樹、田原弘量、井原章之、川脇徳久、佐藤良太、猿山雅亮、寺西利治、金光義彦
  • Organizer: 第77回応用物理学会秋季学術講演会
  • Place of Presentation: 朱鷺メッセ
  • Year and Date: 2016-09-13
• [Remarks] 研究室HP
  • URL: http://www.scl.kyoto-u.ac.jp/~teranisi/
• [Patent(Industrial Property Rights)] 酸素生成用光触媒用助触媒、及び該助触媒を担持した酸素生成用光触媒、並びに複合体及び該複合体の製造方法 (2016)
  • Inventor(s): 猿山雅亮、坂本雅典、寺西利治、秋山誠治、堂免一成
  • Industrial Property Rights Holder: 京都大学、三菱化学、東京大学、 ARPChem
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2016-197428
  • Filing Date: 2016-10-05