화학공학소재연구정보센터
홈 로그인 로그아웃 연락처 사이트맵
Polymer(Korea), Vol.38, No.1, 38-42, January, 2014
Export Citation
수용성 공액고분자/그래핀 옥사이드 복합체를 이용한 유기태양전지의 정공수송층에 대한 연구
Water-Soluble Conjugated Polymer and Graphene Oxide Composite Used as an Efficient Hole-Transporting Layer for Organic Solar Cells
김규리, 오승환, 김현빈, 전준표, 강필현†
  • 한국원자력연구원 첨단방사선연구소
Kyu-Ri Kim, Seung-Hwan Oh, Hyun Bin Kim, Joon-Pyo Jeun, and Phil-Huyn Kang†
  • Advanced Radiation Technology Institute (ARTI), Korea Atomic Energy Research Institute (KAERI), 29 Geumgu-gil, Jeongeup-si, Jeollabuk-do 580-185, Korea
E-mail:
초록
Poly[(9,9-bis((6'-(N,N,N-trimethylammonium)hexyl)-2,7-fluorene)-alt-(9,9-bis(2-(2-(2-methoxyethoxy)ethoxy)ethyl)-9-fluorene)) dibromide(WPF-6-oxy-F)]와 graphene oxide(GO)를 혼합하여 WPF-6-oxy-F-GO를 제조한 후 공기 중에서 감마선을 조사하였다. WPF-6-oxy-F-GO 복합재는 유기태양전지(organic solar cells, OSCs)의 정공수송층(hole transporting layer, HTL)으로서 적용하였다. GO와 비교해 보았을 때, 조사된 WPF-6-oxy-F-GO의 면저항(sheet resistance, Rsheet)은 약 2배 정도 감소하였다. 이는 감마선 조사를 통하여 WPF-6-oxy-F와 GO 사이의 C-N 결합의 형성으로 인한 π-π 공유 결합의 영향과 효율적인 packing 때문이다. 결과적으로, 조사된 WPF-6-oxy-F-GO를 정공수송층으로 적용하였을 때 유기태양전지의 효율은 6.10%까지 증가하였다. 수용성 고분자 WPF-6-oxy-F-GO는 정공수송층으로서 사용되고 있는 PEDOT:PSS를 대체하는 대안 소재로서, 높은 효율과 저가의 유기태양전지를 구현할 수 있을 것으로 기대된다.
The poly[(9,9-bis((6'-(N,N,N-trimethylammonium)hexyl)-2,7-fluorene)-alt-(9,9-bis(2-(2-(2-methoxyethoxy)ethoxy) ethyl)-9-fluorene)) dibromide (WPF-6-oxy-F)] and graphene oxide (GO) was blended and irradiated with gamma ray under ambient condition. This WPF-6-oxy-F-GO composite was investigated as a hole-transporting layer (HTL) in organic solar cells (OSCs). Compared with the pristine GO, the sheet resistance (Rsheet) of irradiated WPF-6-oxy-F-GO was decreased about 2 orders of magnitude. The reason for the decrease of Rsheet is the effect of efficient π-π packing resulted from the formation of C-N bond between WPF6-oxy-F and GO. As a result, the efficiency of OSCs was dramatically enhanced ~ 6.10% by introducing irradiated WPF-6-oxy-F-GO as a HTL. WPF-6-oxy-F-GO is a sufficient candidate for HTL to facilitate the low-cost and high efficiency OSCs.
Keywords:water-soluble conjugated polymer;graphene oxide;organic solar cells;hole-transporting layer.
  1. Huang JS, Chou CY, Lin CF, Sol. Energy Mater. Sol. Cells, 94(2), 182 (2010)
  2. Walzer K, Maennig B, Pfeiffer M, Leo K, Chem. Rev., 107(4), 1233 (2007)
  3. Hsieh CH, Cheng YJ, Li PJ, Chen CH, Dubosc M, Liang RM, Hsu CS, J. Am. Chem. Soc., 132(13), 4887 (2010)
  4. Groenendaal BL, Jonas F, Freitag D, Pielartzik H, Reynolds JR, Adv. Mater., 12(7), 481 (2000)
  5. Kim Y, Ballantyne AM, Nelson J, Bradley DDC, Org. Electron., 10, 205 (2009)
  6. Shrotriya V, Li G, Yao YY, Chu CW, Yang Y, Appl. Phys. Lett., 88, 073508 (2006)
  7. Liao HH, Chen LM, Xu Z, Li G, Yang Y, Appl. Phys. Lett., 92, 173303 (2008)
  8. Kyaw AKK, Sun XW, Jiang CY, Lo GQ, Zhao DW, Kwong DL, Appl. Phys. Lett., 93, 221107 (2008)
  9. Tao C, Ruan S, Xie G, Kong X, Shen L, Meng F, Liu C, Zhang X, Dong W, Chen W, Appl. Phys. Lett., 97, 043311 (2009)
  10. Shankar K, Mor GK, Prakasam HE, Varghese OK, Grimes GA, J. Non-Cryst. Solids, 354, 2767 (2008)
  11. White MS, Olson DC, Shaheen SE, Kopidakis N, Ginley DS, Appl. Phys. Lett., 89, 143517 (2006)
  12. Jorgensen M, Norrman K, Krebs FC, Sol. Energy Mater. Sol. Cells, 92(7), 686 (2008)
  13. Zheng Q, Fang G, Cheng F, Lei H, Quin P, Zhan C, J. Phys. D : Appl. Phys., 46, 135101 (2013)
  14. Gao Y, Yip HL, Chen KS, O'Malley KM, Acton O, Sun Y, Ting G, Chen HZ, Jen AKY, Adv. Mater., 23(16), 1903 (2011)
  15. Hong W, Xu Y, Lu G, Li C, Shi G, Electrochem. Commun., 10, 1555 (2008)
  16. Ali MA, Saion E, Yahya N, Kassim A, Dahlan KM, Hashim S, JESTEC, 2, 111 (2007)
  17. Koizumi H, Dougauchi H, Yamano T, Ichikawa T, Jpn. J. Appl. Phys., 42, 7122 (2003)
  18. Oh SH, Na SI, Jo J, Lim B, Vak D, Kim DY, Adv. Mater., 20, 1977 (2010)
  19. Steim R, Kogler FR, Brabec CJ, J. Mater. Chem., 20, 2499 (2010)
  20. Yeo JS, Yun JM, Kim DY, Park S, Kim SS, Yoon MH, Kim TW, Na SI, ACS Appl. Mater. Interfacs, 4, 2551 (2010)
  21. Yip HL, Hau SK, Baek NS, Ma H, Jen AKY, Adv. Mater., 20(12), 2376 (2008)
  22. Cheun H, Fuentes-Hernandez C, Zhou Y, P-otscavage WJ, Kim SJ, Shim J, Dindar A, Kip-pelen B, J. Phys. Chem. C, 114, 20713 (2010)
  23. Jung ST, Oh SH, Kim HB, Jeun JP, Lee BJ, Kang PH, J. Nanosci. Nanotechnol., 13, 7358 (2013)
  24. Na SI, Wang G, Kim SS, Kim TW, Oh SH, Yu BK, Lee T, Kim DY, J. Mater. Chem., 19, 9045 (2009)