| 학회 |
한국고분자학회 |
| 학술대회 |
2015년 가을 (10/06 ~ 10/08, 대구컨벤션센터(EXCO)) |
| 권호 |
40권 2호 |
| 발표분야 |
분자전자 부문위원회 II |
| 제목 |
A New Rigid Planar Low Band Gap PTTDPP-DT-DTT Polymer for Organic Transistors and Performance Improvement through the Use of a Binary Solvent System |
| 초록 |
Carrier mobility in an organic thin film transistor is strongly associated with the semiconducting film morphology. The shrewd selection of processing solvents is critical for managing the morphology of the semiconducting polymer film. Here, we report the synthesis of a low band gap planar polymer composed of PTTDPP-DT-DTT and the performance improvements of the OTFTs obtained using a binary solvent system: (i) chloroform CF:Tol, (ii) CF:CB, and (iii) CF:DCB. The high boiling points of the added solvents increased the film crystallinity. Thus, the use of CF:DCB yielded the highest carrier mobility obtained among the devices tested. Atomic force microscopy images confirmed that the thermally annealed CF:DCB polymer film displayed the most fibrous character. This work emphasizes that the proper selection of processing solvent is critical for exploiting the beneficial characteristics of rigid planar conjugated polymer semiconductors for the preparation of high-performance OTFTs. |
| 저자 |
김봉수1, 조정호2, 이정헌2, 강영종3, 김현정4, 안국일4, 최종용3, 김민제2
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| 소속 |
1이화대, 2성균관대, 3한양대, 4서강대 |
| 키워드 |
Organic field-effect transistor; low band gap semiconducting polymer; high carrier mobility; binary solvent; film crystallinity
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| E-Mail |
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