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Korean Journal of Chemical Engineering, Vol.33, No.2, 678-682, 2016
Controlling the morphology of the active layer by using additives and its effect on bulk hetero-junction solar cell performance
Improvement of the surface roughness and power conversion efficiency (PCE) of bulk hetero-junction (BHJ) solar cells was made by the addition of organic additives for the cells based on a low energy-gap polymer, poly [2,6-(4,4-bis-(2-ethylhexyl)-4H-cyclopenta [2,1-b;3,4-b'] dithiophene)-alt-4,7(2,1,3-benzothiadiazole)] (PCPDTBT), as an electron donor and [6,6]-phenyl C61 butyric acid methyl ester (PC61BM) as the electron acceptor. The PCPDTBT: PC61BM active layers were prepared by spin-coating process from four different organic solvents: pure chlorobenzene, chlorobenzene with 2.5 vol% 1,2-ethanedithiol (EDT) additive, chlorobenzene with 2.5 vol% 1,8-octanedithiol (ODT) additive, and chlorobenzene with a combination of 2.5 vol% EDT and 2.5 vol% ODT additives. The smoothest surface of the active layer, which was observed by AFM, was obtained in the case of PCPDTBT:PC61BM prepared with a combination of EDT and ODT additives in chlorobenzene, and a maximum PCE of 3.5% was achieved.
[References]
- Brabec CJ, Sariciftci NS, Hummelen JC, Adv. Funct. Mater., 11(1), 15, 2001
- Gunes S, Neugebauer H, Sariciftci NS, Chem. Rev., 107(4), 1324, 2007
- Thompson BC, Frechet JMJ, Angew. Chem.-Int. Edit., 47, 58, 2008
- Brabec CJ, Gowrisanker S, Halls JJM, Laird D, Jia SJ, Williams SP, Adv. Mater., 22(34), 3839, 2010
- Liu C, Yi C, Wang K, Yang Y, Bhatta RS, Tsige M, Xiao S, Gong X, ACS Appl. Mater. Interfaces, 7(8), 4928, 2015
- Chang YM, Su YY, Leu CY, Thin Solid Films, 534, 492, 2013
- Ma WL, Yang CY, Gong X, Lee K, Heeger AJ, Adv. Funct. Mater., 15(10), 1617, 2005
- Li G, Yao Y, Yang H, Shrotriya V, Yang G, Yang Y, Adv. Funct. Mater., 17(10), 1636, 2007
- Liu Y, Zhao J, Li Z, Mu C, Ma W, Hu H, Jiang K, Lin H, Adeand H, Yan H, Nature Commun., 5, 5293, 2014
- Liao H, Chen P, Chang RPH, Su W, Polymer, 6(11), 2784, 2014
- Cook S, Furube A, Katoh R, Jpn. J. Appl. Phys., 47, 1238, 2008
- Zhang W, Wu Y, Bao Q, Gao F, Fang J, Adv. Eng. Mater., 4, 140035, 2014
- He ZC, Zhang C, Xu XF, Zhang LJ, Huang L, Chen JW, Wu HB, Cao Y, Adv. Mater., 23(27), 3086, 2011
- Chang YM, Ding JM, Thin Solid Films, 520(16), 5400, 2012
- Yip HL, Hau SK, Baek NS, Ma H, Jen AKY, Adv. Mater., 20(12), 2376, 2008
- Hau SK, Yip H, Acton O, Nam S, Maa H, Jen AKY, J. Mater. Chem., 18, 5113, 2008
- Wang G, Jiu T, Tang G, Li J, Li P, Song X, Lu F, Fang J, ACS Sus. Chem. Eng., 2, 1331, 2014
- Ruankham P, Yoshikawa S, Sagawa T, Phys. Chem. Chem. Phys., 15, 9516, 2013
- Tanveer M, Habib A, Khan MB, J. Eng. Sci., 6(1), 15, 2013
- Chen L, Xu Z, Honga Z, Yang Y, J. Mater. Chem., 20, 2575, 2010
- Kim JY, Kim SH, Lee HH, Lee K, Ma WL, Gong X, Heeger AJ, Adv. Mater., 18(5), 572, 2006
- Yang J, You J, Chen CC, Hsu WC, Tan HR, Zhang XW, Hong Z, Yang Y, ACS Nano, 5, 6210, 2011
- Pandey AK, Aljada M, Velusamy M, Burn PL, Meredith P, Adv. Mater., 24(8), 1055, 2012
- Li Q, Yoon WJ, Ju H, Nanoscale Res. Lett., 9, 460, 2014
- Peet J, Kim JY, Coates NE, Ma WL, Moses D, Heeger AJ, Bazan GC, Nat. Mater., 6(7), 497, 2007
- Dang MT, Wuest JD, Chem. Soc. Rev., 442, 9105, 2013
- Ochiai S, Imamura S, Kannappan S, Palanisamy K, Shin PK, Curr. Appl. Phys., 13, S58, 2013
[Cited By]
- Zafar M, Yun JY, Kim DH, Korean Journal of Chemical Engineering, 34(5), 1504, 2017
- Kim JH, Shin HB, Korean Journal of Chemical Engineering, 36(2), 305, 2019
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