| Budget Amount *help |
¥4,030,000 (Direct Cost: ¥3,100,000、Indirect Cost: ¥930,000)
Fiscal Year 2014: ¥1,300,000 (Direct Cost: ¥1,000,000、Indirect Cost: ¥300,000)
Fiscal Year 2013: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Outline of Final Research Achievements |
Measurements of exciton diffusion length in tetracene single crystals revealed that the exciton diffusion length is longer than typical thickness of the tetracene single crystals. We successfully developed functionally separated single-crystal organic light-emitting field-effect transistor using the property. The transistor consists of two different organic semiconductor single crystals, which are laminated on a dielectric layer forming bilayer structure. Excitons generated by carrier injection to the bottom semiconductor crystal, which has higher carrier mobility, were transferred to the top semiconductor crystal, which have higher fluorescence efficiency, and light emission from the top crystal was observed.
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