2005 Fiscal Year Final Research Report Summary
Fabrication of new type of organic semiconductors.
| Project/Area Number |
15550162
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Functional materials/Devices
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| Research Institution | TOKAI University (2005)
Hiroshima University (2003-2004) |
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Principal Investigator |
KUNUGI Yoshihito Tokai University, Engineering, Associate Professor, 工学部, 助教授 (90243518)
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| Project Period (FY) |
2003 – 2005
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| Keywords | Organic semiconductors / Mobility / Organic devices |
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| Research Abstract |
New type of organic semiconductors such as (1) chalcogene containing π-conjugated compounds and (2) δ-π conjugated compounds were synthesized and applied for the organic devices (organic transistors, organic EL, etc.). For example, organic field-effect transistors (OFETs) using chalcogene-containing semiconductors as active layers have been successfully fabricated. I have found that a series of dichalcogenophenones perform as good p-type transistors. In particular, diphenyl-benzodiselenophene demonstrates a remarkably high FET performance with field-effect mobility of 0.17 cm^2/Vs and on/off current ratio of 10^5. Further investigation is underway for the similar fused selenophene compounds. I have proposed new PL imaging method using δ-π conjugated compounds. This is quite unique and simple process for the organic EL devices.
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