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High-Performance Phototransistors Based on Organic Microribbons Prepared by a Solution Self-Assembly Process

  1. Yunlong Guo1,2,
  2. Chunyan Du1,2,
  3. Gui Yu1,*,
  4. Chong-an Di1,
  5. Shidong Jiang1,
  6. Hongxia Xi1,2,
  7. Jian Zheng1,2,
  8. Shouke Yan1,
  9. Cailan Yu1,
  10. Wenping Hu1,
  11. Yunqi Liu1,*

Article first published online: 1 MAR 2010

DOI: 10.1002/adfm.200901662

Issue

Advanced Functional Materials

Advanced Functional Materials

Volume 20, Issue 6, pages 1019–1024, March 24, 2010

Additional Information

How to Cite

Guo, Y., Du, C., Yu, G., Di, C.-a., Jiang, S., Xi, H., Zheng, J., Yan, S., Yu, C., Hu, W. and Liu, Y. (2010), High-Performance Phototransistors Based on Organic Microribbons Prepared by a Solution Self-Assembly Process. Adv. Funct. Mater., 20: 1019–1024. doi: 10.1002/adfm.200901662

Author Information

  1. 1

    Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 (P. R. China)

  2. 2

    Graduate School of Chinese Academy of sciences Beijing 100049 (P. R. China)

*Beijing National Laboratory for Molecular Sciences Institute of Chemistry Chinese Academy of Sciences Beijing 100190 (P. R. China).

Publication History

  1. Issue published online: 22 MAR 2010
  2. Article first published online: 1 MAR 2010
  3. Manuscript Revised: 8 DEC 2009
  4. Manuscript Received: 4 SEP 2009

Funded by

  • National Natural Science Foundation of China. Grant Numbers: 20825208, 60736004, 20721061, 60911130231
  • National Major State Basic Research Development Program. Grant Numbers: 2006CB806203, 2006CB932103, 2009CB623603
  • Chinese Academy of Sciences

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Keywords:

  • microstructures;
  • organic transistors;
  • self-assembly;
  • semiconductors;
  • organic electronics

Abstract

Oligoarenes as an alternative group of promising semiconductors in organic optoelectronics have attracted much attention. However, high-performance and low-cost opto-electrical devices based on linear asymmetric oligoarenes with nano/microstructures are still rarely studied because of difficulties both in synthesis and high-quality nano/microstructure growth. Here, a novel linear asymmetric oligoarene 6-methyl-anthra[2,3-b]benzo[d]thiophene (Me-ABT) is synthesized and its high-quality microribbons are grown by a solution process. The solution of Me-ABT exhibits a moderate fluorescence quantum yield of 0.34, while the microribbons show a glaucous light emission. Phototransistors based on an individual Me-ABT microribbon prepared by a solution-phase self-assembly process showed a high mobility of 1.66 cm2 V−1 s−1, a large photoresponsivity of 12 000 A W−1, and a photocurrent/dark-current ratio of 6000 even under low light power conditions (30 µW cm−2). The measured photoresponsivity of the devices is much higher than that of inorganic single-crystal silicon thin film transistors. These studies should boost the development of the organic semiconductors with high-quality microstructures for potential application in organic optoelectronics.

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