| Budget Amount *help |
¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Fiscal Year 2012: ¥2,340,000 (Direct Cost: ¥1,800,000、Indirect Cost: ¥540,000)
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| Research Abstract |
For the improvement of the efficiency for photon-electron conversion process in polymer thin film solar cells, it is important to create a suitable phase-separated structure in the active layer. In this work, multi-functional block copolymers were designed and synthesized in order to utilize the self-assembling nature of block copolymers for the construction of well-controlled phase-separated morphology in the active layer of the solar cells. Introducing a functional group fostering smooth charge dissociation at the junction of polythiophene-based block copolymers provided fine phase separations in the blend film with a fullerene derivative. The photon-electron conversion efficiency was improved for the solar cell devices based on the junction-modified block copolymers compared to the conventional devices.
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