| Budget Amount *help |
¥26,390,000 (Direct Cost: ¥20,300,000、Indirect Cost: ¥6,090,000)
Fiscal Year 2015: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2014: ¥6,760,000 (Direct Cost: ¥5,200,000、Indirect Cost: ¥1,560,000)
Fiscal Year 2013: ¥15,210,000 (Direct Cost: ¥11,700,000、Indirect Cost: ¥3,510,000)
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| Outline of Final Research Achievements |
In this study, we extended the control range of the refractive index and birefringence of organic semiconductor films and applied their techniques to organic semiconductor devices to improve the device performances. We newly developed conductive super-low-index charge transport layers by mixing amorphous organic semiconductors and low-index electret materials, and also controlled the birefringence of amorphous organic semiconductor films using molecular orientation. We showed that the outcoupling efficiency of organic light-emitting diodes can be enhanced by these controls of refractive index and birefringence. Furthermore, we analyzed the dependence of the refractive index and birefringence on fabrication processes, and clarified the mechanism of film formation related to the birefringence control.
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