| Project/Area Number |
15K13682
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| Research Category |
Grant-in-Aid for Challenging Exploratory Research
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| Allocation Type | Multi-year Fund |
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| Research Field |
Functional solid state chemistry
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| Research Institution | University of Hyogo |
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Principal Investigator |
Tajima Hiroyuki 兵庫県立大学, 物質理学研究科, 教授 (60207032)
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| Co-Investigator(Renkei-kenkyūsha) |
SATO Seiichi 兵庫県立大学, 物質理学研究科, 助教 (90326299)
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| Research Collaborator |
KADOYA Tomofumi 兵庫県立大学, 物質理学研究科
YAMADA Jun-ichi 兵庫県立大学, 物質理学研究科
YOKOMATSU Tokuji 兵庫県立大学, 工学研究科
MAENAKA Kazusuke 兵庫県立大学, 工学研究科
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| Project Period (FY) |
2015-04-01 – 2018-03-31
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| Project Status |
Completed (Fiscal Year 2017)
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| Budget Amount *help |
¥3,900,000 (Direct Cost: ¥3,000,000、Indirect Cost: ¥900,000)
Fiscal Year 2016: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
Fiscal Year 2015: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Keywords | 弱磁場磁気抵抗 / 有機スピントロニクス / 導電性高分子 / 光CELIV / 有機薄膜太陽電池 / バルクヘテロ接合 / 蓄積電荷測定 / 電荷注入障壁 / ACM / 有機薄膜デバイス / 蓄積電荷測定法 / 光CELIV法 / 変位電流法 |
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| Outline of Final Research Achievements |
We report an experimental investigation of the magnetic field effect (MFE) in polymer bulk heterojunction devices at temperatures below 10 K using photocarrier extraction by linearly increasing voltages (photo-CELIV). In the experiments, the delay time (td) dependence of the MFE was investigated in detail. For td < 0.08 ms, a positive MFE was observed in the field region B < 0.1 T and a negative MFE was observed for B > 0.2 T. For td > 8 ms, only a positive MFE was observed. For the photocurrent pulse detected immediately after light irradiation, the MFE was negligibly small. In a high magnetic field of 15 T, a significant MFE exceeding 80% was observed at 1.8 K for td = 800 ms. We discuss the results based on a model of triplet-singlet (or singlet-triplet) conversion in the magnetic field.
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