ITARU OSAKA

Last Updated :2025/04/03

Affiliations, Positions
Graduate School of Advanced Science and Engineering, Professor
Web Site
https://osaka.hiroshima-u.ac.jp
E-mail
iosakahiroshima-u.ac.jp
Self-introduction
My research interest includes molecular design and synthesis of functional conjugated polymers, self-assembly, and printable organic thin-film devices such as field-effect transistors and solar cells.

Basic Information

Major Professional Backgrounds

  • 2006/02, 2009/03, Carnegie Mellon University, Department of Chemistry, Postdoctoral Researcher
  • 2009/04/01, 2013/03/31, Hiroshima University, Graduate School of Engineering, Assistant Professor
  • 2013/04, 2016/09, Institute of Physical and Chemical Research
  • 2016/10/01, 2020/03/31, Hiroshima University, Institute of Engineering, Professor
  • 2002/04, 2006/01, Fujifilm, Research Scientist

Educational Backgrounds

  • University of Tsukuba, Japan, 1993/04, 1997/03
  • University of Tsukuba, Japan, 1997/04, 2002/03

Academic Degrees

  • Ph. D, University of Tsukuba

Educational Activity

  • [Bachelor Degree Program] School of Engineering : Cluster 3(Applied Chemistry, Biotechnology and Chemical Engineering) : Program of Applied Chemistry
  • [Master's Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Applied Chemistry Program
  • [Master's Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Smart Innovation Program
  • [Doctoral Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Applied Chemistry Program
  • [Doctoral Program] Graduate School of Advanced Science and Engineering : Division of Advanced Science and Engineering : Smart Innovation Program

Research Fields

  • Chemistry;Materials chemistry;Organic and hybrid materials
  • Chemistry;Materials chemistry;Polymer / Textile materials
  • Chemistry;Applied chemistry;Energy-related chemistry
  • Chemistry;Materials chemistry;Device related chemistry

Research Keywords

  • Organic functional materials Conjugated polymers Next generation photovoltaics Printed electronics

Affiliated Academic Societies

  • The Chemical Society of Japan, The Society of Polymer Science Japan, Japan Society of Applied Physics, The Society of Photopolymer Science and Technology, American Chemical Society, Materials Research Society

Educational Activity

Course in Charge

  1. 2025, Liberal Arts Education Program1, 1Term, Carbon-neutral Science and Technology
  2. 2025, Undergraduate Education, 4Term, Basic Organic Chemistry II
  3. 2025, Undergraduate Education, 2Term, Introduction to Fundamental Industry
  4. 2025, Undergraduate Education, 3Term, Synthetic Polymer Chemistry
  5. 2025, Undergraduate Education, Year, Graduation Thesis
  6. 2025, Graduate Education (Master's Program) , 1Term, Special Exercises on Applied Chemistry A
  7. 2025, Graduate Education (Master's Program) , 2Term, Special Exercises on Applied Chemistry A
  8. 2025, Graduate Education (Master's Program) , 3Term, Special Exercises on Applied Chemistry B
  9. 2025, Graduate Education (Master's Program) , 4Term, Special Exercises on Applied Chemistry B
  10. 2025, Graduate Education (Master's Program) , Academic Year, Special Study on Applied Chemistry
  11. 2025, Graduate Education (Master's Program) , 3Term, Advanced Synthetic Polymer Chemistry
  12. 2025, Graduate Education (Doctoral Program) , Academic Year, Special Study on Applied Chemistry
  13. 2025, Graduate Education (Master's Program) , 1Term, Sustainability Materials Science

Research Activities

Academic Papers

  1. Twisted diphenoquinones fused with thiophene rings: thiophene analogs of bianthrone, CHEMICAL COMMUNICATIONS, 60(75), 10410-10413, 20240916
    Link to Paper Search Results by DOI
  2. Manipulating the functionality and structures of pi-conjugated polymers utilizing intramolecular noncovalent interactions towards efficient organic photovoltaics, CHEMICAL SCIENCE, 15(17), 6349-6362, 20240501
    Link to Paper Search Results by DOI
  3. Two Isomeric Benzo[d]imidazole-Based Nonfullerene Acceptors for Organic Photovoltaics, ACS APPLIED ENERGY MATERIALS, 7(7), 2946-2954, 20240323
    Link to Paper Search Results by DOI
  4. Bending the Rule: Naphthobisthiadiazole-Based Terpolymers with Both High Solubility and Crystallinity for Organic Photovoltaics, ACS APPLIED POLYMER MATERIALS, 6(5), 2586-2593, 20240221
    Link to Paper Search Results by DOI
  5. Dependence of Exciton Binding Energy on Bandgap of Organic Semiconductors, JOURNAL OF PHYSICAL CHEMISTRY LETTERS, 14(50), 11412-11420, 20231211
    Link to Paper Search Results by DOI
  6. Simple pi-Conjugated Polymers Based on Bithiazole for Nonfullerene Organic Photovoltaics, ACS APPLIED MATERIALS & INTERFACES, 16(3), 3735-3743, 20240109
    Link to Paper Search Results by DOI
  7. Employment of Alkoxy Sidechains in Semicrystalline Semiconducting Polymers for Ambient-Stable p-Doped Conjugated Polymers, MACROMOLECULES, 57(1), 328-338, 20231214
    Link to Paper Search Results by DOI
  8. Ordered p-conjugated polymer backbone in amorphous blend for high efficiency nonfullerene organic photovoltaics, COMMUNICATIONS MATERIALS, 4(1), 20230921
    Link to Paper Search Results by DOI
  9. Microscopic Mechanism of High Efficiency and Stability of Inverted Polymer Fullerene Solar Cells, ACS APPLIED ENERGY MATERIALS, 6(11), 6299-6310, 20230519
    Link to Paper Search Results by DOI
  10. Interplay Between pi-Conjugated Polymer Donors and Acceptors Determines Crystalline Order of Their Blends and Photovoltaic Performance, ADVANCED ENERGY MATERIALS, 13(13), 202304
    Link to Paper Search Results by DOI
  11. Exciton dynamics of a fused ring pi-conjugated nonfullerene molecule based on dithienonaphthobisthiadiazole, JAPANESE JOURNAL OF APPLIED PHYSICS, 62(SK), 20230801
    Link to Paper Search Results by DOI
  12. Naphthobispyrazine bisimide-based semiconducting polymers as electron acceptors for all-polymer photovoltaic cells, POLYMER JOURNAL, 55(4), 443-450, 202304
    Link to Paper Search Results by DOI
  13. Halogen-Free p-Conjugated Polymers Based on Thienobenzobisthiazole for Efficient Nonfullerene Organic Solar Cells: Rational Design for Achieving High Backbone Order and High Solubility, ADVANCED SCIENCE, 10(5), 202302
    Link to Paper Search Results by DOI
  14. Effect of UV-Light Irradiation on Charge-Accumulation States in PTzBT Polymer Solar Cells, JOURNAL OF PHOTOPOLYMER SCIENCE AND TECHNOLOGY, 35(3), 193-197, 2022
  15. Synergetic Effect on Enhanced Photovoltaic Performance of Spray-Coated Perovskite Solar Cells Enabled by Additive Doping and Antisolvent Additive Spraying Treatment, ACS APPLIED ENERGY MATERIALS, 5(4), 4149-4158, 20220425
    Link to Paper Search Results by DOI
  16. Ester-functionalized quinoxaline-based polymers for application in organic photovoltaics, MATERIALS CHEMISTRY AND PHYSICS, 287, 20220801
    Link to Paper Search Results by DOI
  17. Tunable Photoelectric Properties of n-Type Semiconducting Polymer:Small Molecule Blends for Red Light Sensing Phototransistors, ADVANCED OPTICAL MATERIALS, 10(10), 202205
    Link to Paper Search Results by DOI
  18. Stability improvement mechanism due to less charge accumulation in ternary polymer solar cells, NPJ FLEXIBLE ELECTRONICS, 6(1), 20220420
    Link to Paper Search Results by DOI

Awards

  1. 2013, SPSJ Hitachi Award, Society of Polymer Science Japan, 縮環π電子系縮環π電子系を基盤とする高性能半導体ポリマーの開発

External Funds

Acceptance Results of Competitive Funds

  1. NEDO Feasibility Study Program, 2021/05, 2023/03
  2. Strategic Basic Research Programs(CREST), 2021/04/01, 2023/03/31
  3. JST-Mirai Program, 2020/11/01, 2024/03/31
  4. Strategic Basic Research Programs(ALCA), 2016/10/01, 2019/03/31
  5. KAKENHI(Grant-in-Aid for Scientific Research (B)), 2016, 2018
  6. JST-Mirai Program, 2020/11/01, 2023/03/31