Advertisement

Science China Materials

, Volume 62, Issue 1, pp 138–145 | Cite as

Grain size adjustion in organic field-effect transistors for chemical sensing performance improvement

  • Xiaohan Wu (吴小晗)
  • Rongrong Du (都蓉蓉)
  • Lu Fang (方路)
  • Yingli Chu (褚莹莉)
  • Zhuo Li (李卓)
  • Jia Huang (黄佳)Email author
Articles
  • 62 Downloads

Abstract

Various nanostructures of the organic semiconductor (OSC) films have been reported to enhance the organic field-effect transistors (OFETs) sensing performance. However, complicated fabrication processes hinder their applications. In this work, we have effectively enhanced the sensitivity of the OFET-based sensors only by adjusting substrate temperature in OSC preparation and surface treatment of the dielectric layer. The relative sensitivity of the device can be enhanced by 5 times. The flexible sensors with polymer dielectric also exhibit high sensitivity because the less smooth surface of the polymer provides the OSCs with smaller grain size. Therefore, this work reveals the trade-off effects of the OSCs grain size on both transistor characteristic and chemical sensing performance, and provides a simple and extensively applicable strategy for OFETs sensitivity improvement.

Keywords

grain size organic semiconductor OFET chemical sensor performance improvement 

调节晶粒尺寸来提高有机场效应晶体管的化学传感性能

摘要

基于有机场效应晶体管(OFET)的化学传感器, 分析物在与位于有机半导体(OSC)薄膜底部的导电沟道发生相互作用之前需要扩散通过整层OSC, 从而大大地限制了器件的灵敏度. 虽然通过设计各种纳米结构OSC薄膜来提高器件传感性能的方法见诸报道, 然而, 这些纳米结构的制备过程复杂且不能广泛适用于种类繁多的OSC材料. 本文首先研究了OSC晶粒尺寸对OFET化学传感器灵敏度的影响, 结果表明更小的晶粒尺寸能为化学分析物的扩散提供更多的空间间隙, 从而有利于提高器件灵敏度. 基于此, 我们通过简单地调控OFET的制备参数, 包括OSC薄膜蒸镀过程中的基板温度, OFET基底的表面处理程度等参数, 将传感器的相对灵敏度提高了5倍. 基于聚合物介电层的柔性传感器也表现出较好的灵敏度. 该工作揭示了OSC晶粒尺寸对器件晶体管性能和传感器性能的互不相同的影响, 并且为提高OFET化学传感器性能提供了一种简便且广适性的策略.

Notes

Acknowledgements

This research was supported by the National Natural Science Foundation of China (51603151 and 51741302), the National Key Research and Development Program of China (2017YFA0103900 & 2017YFA0103904), Science & Technology Foundation of Shanghai (17JC1404600), and the Fundamental Research Funds for the Central Universities.

Supplementary material

40843_2018_9279_MOESM1_ESM.pdf (1.3 mb)
Grain Size Adjustion in Organic Field-effect Transistors for Chemical Sensing Performance Improvement

References

  1. 1.
    Torsi L, Magliulo M, Manoli K, et al. Organic field-effect transistor sensors: a tutorial review. Chem Soc Rev, 2013, 42: 8612–8628CrossRefGoogle Scholar
  2. 2.
    Lin P, Yan F. Organic thin-film transistors for chemical and biological sensing. Adv Mater, 2012, 24: 34–51CrossRefGoogle Scholar
  3. 3.
    Wu X, Huang J. Array of organic field-effect transistor for advanced sensing. IEEE J Emerg Sel Top Circuits Syst, 2017, 7: 92–101CrossRefGoogle Scholar
  4. 4.
    Liu D, Chu Y, Wu X, et al. Side-chain effect of organic semiconductors in OFET-based chemical sensors. Sci China Mater, 2017, 60: 977–984CrossRefGoogle Scholar
  5. 5.
    Huang J, Du J, Cevher Z, et al. Printable and flexible phototransistors based on blend of organic semiconductor and biopolymer. Adv Funct Mater, 2017, 27: 1604163CrossRefGoogle Scholar
  6. 6.
    Tang Q, Tong Y, Zheng Y, et al. Organic nanowire crystals combine excellent device performance and mechanical flexibility. Small, 2011, 7: 189–193CrossRefGoogle Scholar
  7. 7.
    Khim D, Ryu GS, Park WT, et al. Precisely controlled ultrathin conjugated polymer films for large area transparent transistors and highly sensitive chemical sensors. Adv Mater, 2016, 28: 2752–2759CrossRefGoogle Scholar
  8. 8.
    Yun M, Sharma A, Fuentes-Hernandez C, et al. Stable organic field-effect transistors for continuous and nondestructive sensing of chemical and biologically relevant molecules in aqueous environment. ACS Appl Mater Interfaces, 2014, 6: 1616–1622CrossRefGoogle Scholar
  9. 9.
    Zhang C, Chen P, Hu W. Organic field-effect transistor-based gas sensors. Chem Soc Rev, 2015, 44: 2087–2107CrossRefGoogle Scholar
  10. 10.
    Zhang F, Qu G, Mohammadi E, et al. Solution-processed nanoporous organic semiconductor thin films: toward health and environmental monitoring of volatile markers. Adv Funct Mater, 2017, 27: 1701117CrossRefGoogle Scholar
  11. 11.
    Fan C, Zoombelt AP, Jiang H, et al. Solution-grown organic singlecrystalline p-n junctions with ambipolar charge transport. Adv Mater, 2013, 25: 5762–5766CrossRefGoogle Scholar
  12. 12.
    Lu J, Liu D, Zhou J, et al. Porous organic field-effect transistors for enhanced chemical sensing performances. Adv Funct Mater, 2017, 27: 1700018CrossRefGoogle Scholar
  13. 13.
    Lee MY, Hong J, Lee EK, et al. Highly flexible organic nanofiber phototransistors fabricated on a textile composite for wearable photosensors. Adv Funct Mater, 2016, 26: 1445–1453CrossRefGoogle Scholar
  14. 14.
    Guo P, Zhao G, Chen P, et al. Porphyrin nanoassemblies via surfactant-assisted assembly and single nanofiber nanoelectronic sensors for high-performance H2O2 vapor sensing. ACS Nano, 2014, 8: 3402–3411CrossRefGoogle Scholar
  15. 15.
    Yu H, Bao Z, Oh JH. High-performance phototransistors based on single-crystalline n-channel organic nanowires and photogenerated charge-carrier behaviors. Adv Funct Mater, 2013, 23: 629–639CrossRefGoogle Scholar
  16. 16.
    Shaymurat T, Tang Q, Tong Y, et al. Gas dielectric transistor of CuPc single crystalline nanowire for SO2 detection down to subppm levels at room temperature. Adv Mater, 2013, 25: 2269–2273CrossRefGoogle Scholar
  17. 17.
    Di Carlo A, Piacenza F, Bolognesi A, et al. Influence of grain sizes on the mobility of organic thin-film transistors. Appl Phys Lett, 2005, 86: 263501CrossRefGoogle Scholar
  18. 18.
    Celle C, Suspène C, Ternisien M, et al. Interface dipole: Effects on threshold voltage and mobility for both amorphous and polycrystalline organic field effect transistors. Org Electron, 2014, 15: 729–737CrossRefGoogle Scholar
  19. 19.
    Chisaka J, Lu M, Nagamatsu S, et al. Structure and electrical properties of unsubstituted oligothiophenes end-capped at the ß-position. Chem Mater, 2007, 19: 2694–2701CrossRefGoogle Scholar
  20. 20.
    Hutchins DO, Weidner T, Baio J, et al. Effects of self-assembled monolayer structural order, surface homogeneity and surface energy on pentacene morphology and thin film transistor device performance. J Mater Chem C, 2013, 1: 101–113CrossRefGoogle Scholar
  21. 21.
    Chen SC, Ganeshan D, Cai D, et al. High performance n-channel thin-film field-effect transistors based on angular-shaped naphthalene tetracarboxylic diimides. Org Electron, 2013, 14: 2859–2865CrossRefGoogle Scholar
  22. 22.
    Jang J, Nam S, Chung DS, et al. High Tg cyclic olefin copolymer gate dielectrics for N,N’-ditridecyl perylene diimide based fieldeffect transistors: improving performance and stability with thermal treatment. Adv Funct Mater, 2010, 20: 2611–2618CrossRefGoogle Scholar
  23. 23.
    Kang B, Park N, Lee J, et al. Surface-order mediated assembly of p-conjugated molecules on self-assembled monolayers with controlled grain structures. Chem Mater, 2015, 27: 4669–4676CrossRefGoogle Scholar
  24. 24.
    Lin YY, Gundlach DJ, Nelson SF, et al. Stacked pentacene layer organic thin-film transistors with improved characteristics. IEEE Electron Device Lett, 1997, 18: 606–608CrossRefGoogle Scholar
  25. 25.
    Chaure NB, Sosa-Sanchez JL, Cammidge AN, et al. Solution processable lutetium phthalocyanine organic field-effect transistors. Org Electron, 2010, 11: 434–438CrossRefGoogle Scholar
  26. 26.
    Yamamoto T, Takimiya K. Facile synthesis of highly p-extended heteroarenes, dinaphtho[2,3-b:2’,3’-f]chalcogenopheno[3,2-b]chalcogenophenes, and their application to field-effect transistors. J Am Chem Soc, 2007, 129: 2224–2225CrossRefGoogle Scholar
  27. 27.
    Majewski LA, Schroeder R, Grell M. Low-voltage, high-performance organic field-effect transistors with an ultra-thin TiO2 layer as gate insulator. Adv Funct Mater, 2005, 15: 1017–1022CrossRefGoogle Scholar

Copyright information

© Science China Press and Springer-Verlag GmbH Germany, part of Springer Nature 2018

Authors and Affiliations

  • Xiaohan Wu (吴小晗)
    • 1
  • Rongrong Du (都蓉蓉)
    • 1
  • Lu Fang (方路)
    • 1
  • Yingli Chu (褚莹莉)
    • 1
  • Zhuo Li (李卓)
    • 2
  • Jia Huang (黄佳)
    • 1
    Email author
  1. 1.School of Materials Science and EngineeringTongji UniversityShanghaiChina
  2. 2.State Key Laboratory of Pollution Control and Resource Reuse, School of Environmental Science and EngineeringTongji UniversityShanghaiChina

Personalised recommendations