Solution-processable small molecules for bulk heterojunction ambipolar thin-film transistors and complementary-like inverters
| Autor: | Donghee Choi, Taeshik Earmme, Shueh Lin Yau, Choongik Kim, Guhyun Kwon, Po Chun Huang, Dongil Ho, Ming Chou Chen, Gene-Hsiang Lee, Chang Hui Cho, Sureshraju Vegiraju |
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| Rok vydání: | 2019 |
| Předmět: |
Materials science
Ambipolar diffusion business.industry Process Chemistry and Technology General Chemical Engineering Transistor 02 engineering and technology Electron 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences Polymer solar cell 0104 chemical sciences law.invention Organic semiconductor Thin-film transistor law Side chain Optoelectronics 0210 nano-technology business Voltage |
| Zdroj: | Dyes and Pigments. 163:725-733 |
| ISSN: | 0143-7208 |
| Popis: | Solution-processable thioalkylated bithiophene derivatives with different lengths of side chains (SBT-n; n = 10, 12, 14, 16, 18) have been synthesized and characterized as p-channel organic semiconductors for thin-film transistors (TFTs). Based on a combination of the highest performing SBT derivative (SBT-14) and quinoidals (DTTRQs) as p- and n-channel materials, solution-processed small-molecular bulk heterojunction (BHJ) ambipolar thin-film transistors were fabricated, and the resulting devices showed air-stable and high ambipolar performance with well-balanced electron and hole mobilities as high as 0.70 cm2 V−1 s−1 and 0.21 cm2 V−1 s−1, respectively. Furthermore, complementary-like inverters comprising two ambipolar thin-film transistors were demonstrated, which exhibited a high voltage gain of up to 81. Our study clearly demonstrated that side chain engineering of small molecular organic semiconductors had a significant influence on the electrical performance of TFTs and BHJ transistors, as well as complementary-like inverters. |
| Databáze: | OpenAIRE |
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