Article
  • Effect of Non-solvent Addition Amount and Aging Time on the Crystal Nucleation and Growth in Polythiophene Thin Film
  • Kim GW, Park YD
  • 비용매 첨가량과 숙성시간이 폴리사이오펜 박막의 결정생성과 성장에 미치는 영향
  • 김건우, 박영돈
Abstract
In this work, we added small amounts of the non-solvent (acetonitrile) to the chloroform solutions prior to film formation in order to enhance molecular order of poly(3-hexylthiophene) (P3HT). In the early stage, nucleation sites were controlled by adding volume ratio of acetonitrile, and nucleated crystals of P3HT molecule were grown by aging the ordered precursor solution. In the case of the addition of acetonitrile, 6 vol%, the P3HT thin film showed very low crystallinity in the early stage due to low density nucleation sites. After aging the precursor solution, however, highly ordered P3HT thin film was fabricated. The molecular order and electrical properties of P3HT films were profoundly enhanced by controlling both volume ratio of added non-solvent and aging time, because nucleation sites and optimum aging time of crystal growth were dependent on the amount of non-solvent.

본 연구에서는 poly(3-hexylthiophene)(P3HT)을 양용매인 클로로포름에 용해시킨 다음, 용액 내에서 분자 규칙도를 향상시키기 위해서 비용매인 acetonitrile을 소량 첨가하였다. Acetonitrile의 첨가량을 조절하여 용액 내에 초기에 형성되는 P3HT 결정 생성량을 조절하였으며 숙성시간을 통해 결정을 성장시켰다. Acetonitrile 6 vol%를 첨가했을 경우, 초기에 결정 생성량이 적어 낮은 결정성의 박막이 제조되었으나, 숙성시간이 증가함에 따라 높은 결정화도를 가진 박막이 제조되었다. 결과적으로 비용매의 첨가량에 따라서 분자들의 결정생성 개수와 결정성장의 최적시간이 달라지기 때문에, 비용매 첨가량에 따라 적절한 숙성 시간을 선정하면 고분자 박막의 결정화도와 전기적 성능을 획기적으로 향상시킬 수 있다.

Keywords: organic thin film transistor; poly(3-hexylthiophene); non solvent; molecular ordering; aging time

References
  • 1. Klauk H, Chem. Soc. Rev., 39, 2643 (2010)
  •  
  • 2. Park YD, Lim JA, Lee HS, Cho K, Mater. Today, 10, 46 (2007)
  •  
  • 3. Kalyani NT, Dhoble ST, Renew. Sust. Energ. Rev., 16, 2696 (2012)
  •  
  • 4. Zhang BH, Tan GP, Lam CS, Yao B, Ho CL, Liu LH, Xie ZY, Wong WY, Ding JQ, Wang LX, Adv. Mater., 24(14), 1873 (2012)
  •  
  • 5. Kim YH, Sachse C, Machala ML, May C, Muller-Meskamp L, Leo K, Adv. Funct. Mater., 21(6), 1076 (2011)
  •  
  • 6. Xu Q, Song T, Cui W, Liu Y, Xu W, Lee S, Sun B, ACS Appl. Mater. Interfaces, 7, 3272 (2015)
  •  
  • 7. Ruiz R, Choudhary D, Nickel B, Toccoli T, Chang KC, Clancy P, Blakely JM, Headrick RL, Iannotta S, Malliaras GG, Chem. Mater., 16, 4497 (2004)
  •  
  • 8. Yang HC, Shin TJ, Yang L, Cho K, Ryu CY, Bao ZN, Adv. Funct. Mater., 15(4), 671 (2005)
  •  
  • 9. Kim HS, Na JY, Kim S, Park YD, J. Phys. Chem. C, 119, 8388 (2015)
  •  
  • 10. Oh JY, Shin M, Lee TI, Jang WS, Min Y, Myoung JM, Baik HK, Jeong U, Macromolecules, 45(18), 7504 (2012)
  •  
  • 11. Khan HU, Li R, Ren Y, Chen L, Payne MM, Bhansali US, Smilgies DM, Anthony JE, Amassian A, ACS Appl. Mater. Interfaces, 5, 2325 (2013)
  •  
  • 12. Kim DH, Park YD, Jang Y, Kim S, Cho K, Macromol. Rapid Commun., 26(10), 834 (2005)
  •  
  • 13. Fu CM, Jeng KS, Li YH, Hsu YC, Chi MH, Jian WB, Chen JT, Macromol. Chem. Phys., 216, 59 (2015)
  •  
  • 14. Choi D, Chang M, Reichmanis E, Adv. Funct. Mater., 25(6), 920 (2015)
  •  
  • 15. Peet J, Kim JY, Coates NE, Ma WL, Moses D, Heeger AJ, Bazan GC, Nat. Mater., 6(7), 497 (2007)
  •  
  • 16. Park YD, Lee SG, Lee HS, Kwak DH, Lee DH, Cho K, J. Mater. Chem., 21, 2338 (2011)
  •  
  • 17. Berson S, De Bettignies R, Bailly S, Guillerez S, Adv. Funct. Mater., 17(8), 1377 (2007)
  •  
  • 18. Park YD, Lee HS, Choi YJ, Kwak D, Cho JH, Lee S, Cho K, Adv. Funct. Mater., 19(8), 1200 (2009)
  •  
  • 19. Yamamoto T, Komarudin D, Arai M, Lee BL, Suganuma H, Asakawa N, Inoue Y, Kubota K, Sasaki S, Fukuda T, Matsuda H, J. Am. Chem. Soc., 120(9), 2047 (1998)
  •  
  • 20. Keum JK, Xiao K, Ivanov IN, Hong K, Browning JF, Smith GS, Shao M, Littrell KC, Rondinone AJ, Payzant EA, Chen J, Hensley DK, Cryst. Eng. Commun., 15, 1114 (2013)
  •  
  • 21. Li L, Lu G, Yang X, J. Mater. Chem., 18, 1984 (2008)
  •  
  • 22. Brown PJ, Thomas DS, Kohler A, Wilson JS, Kim JS, Ramsdale CM, Sirringhaus H, Friend RH, Phys. Rev., 67, 064203 (2003)
  •  
  • 23. Wang W, Guo S, Herzig EM, Sarkar K, Schindler M, Margerl D, Philipp M, Perlich J, Buschbaum PM, J. Mater. Chem., 4, 3743 (2016)
  •  
  • 24. Na JY, Kang B, Sin DH, Cho K, Park YD, Sci. Rep., 5, 13228 (2015)
  •  
  • 25. Horowitz G, Adv. Mater., 10(5), 365 (1998)
  •  
  • Polymer(Korea) 폴리머
  • Frequency : Bimonthly(odd)
    ISSN 0379-153X(Print)
    ISSN 2234-8077(Online)
    Abbr. Polym. Korea
  • 2023 Impact Factor : 0.4
  • Indexed in SCIE

This Article

  • 2017; 41(1): 134-138

    Published online Jan 25, 2017

  • 10.7317/pk.2017.41.1.134
  • Received on Aug 16, 2016
  • Accepted on Sep 19, 2016