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以 poly(3-hexylthiophene)(P3HT)为电子给体, indene-C60 bisadduct (ICBA)为电子受体, 通过掺杂不同浓度胆甾液晶氯化胆甾醇制备了有机体异质结太阳能电池.结果表明, 适当浓度掺杂使器件的开路电压提高到了0.78 V, 但短路电流密度却有所降低, 填充因子几乎不变, 能量转换效率提高了10%. 利用X射线、光致发光、原子力显微镜及紫外-可见吸收光谱进行表征, 发现液晶掺杂对活性层的结晶度、分子内部排列情况、薄膜表面形貌和光吸收特性等都有明显影响.
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关键词:
- 有机太阳能电池 /
- 胆甾液晶 /
- 形貌 /
- P3HT: ICBA
A series of poly(3-hexylthiophene) (P3HT)/indene-C60 bisadduct (ICBA) bulk heterojunction polymer solar cells is fabricated with different cholesteric liquid crystalline (LC)-cholesteryl chloride doping concentrations. The open circuit voltage (Voc) is increased from 0.78 V to 0.65 V, meanwhile the short circuit current density (Jsc) is reduced from 4.23 mA·cm-2 to 4.10 mA·cm-2 when the LC doping concentration is 5%, and fill factor is almost unchanged. The optimized power conversion efficiency of polymer solar cells (PSCs) with LC doping is about 1.51%. The crystallinity of the active layer and the light absorption characteristics are analyzed by X-ray diffraction, photoluminescence, UV-visible absorption spectroscopy and atomic force microscope, respectively.-
Keywords:
- polymers /
- cholesteric liquid crystal /
- morphology /
- P3HT: ICBA
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[14] Zhang Y P, Li Y, Li C Z, Wang W W, Zhang J Y, Wang R M 2012 Rare Metals 31 168
[15] Kim H, Park J, Lee S, Ha C S, Kim Y 2011 Sol. Energy Mater. Sol. C 95 349
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[21] Lee J M, Kwon B H, Park H I, Kim H, Kim M G, Park J S, Kim E S, Yoo S, Jeon D Y, Kim S O 2013 Adv. Mater. 25 2011
[22] Yu H Z 2012 J. Funct Mater. 43 2970 (in Chinese) [於黄忠 2012 功能材料 43 2970]
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[1] Tang C W 1986 Appl. Phys. Lett. 48 183
[2] Qing J, Zhong Z F, Liu Y, Li B J, Zhou X 2014 Chin. Phys. B 23 038802
[3] Xu Z X, Roy V A L 2013 Chin. Phys. B 22 128505
[4] Li M, Wang C K, Li C X, Wang J M, Ma H 2013 Electron. Compon. Mater. 32 21 (in Chinese) [李萌, 王传坤, 李晨希, 王金淼, 马恒 2013 电子元件与材料 32 21]
[5] Kim J Y, Noh S, Kwak J, Lee C 2013 J. Nanosci. Nanotechnol. 13 3360
[6] Mhlbacher D, Scharber M, Morana M, Zhu Z, Waller D, Gaudiana R, Brabec C 2006 Adv. Mater. 18 2884
[7] Yang S P, Li N, Li G, Shi J B, Li X W, Fu G S 2013 Acta Phys. Sin. 62 014702 (in Chinese) [杨少鹏, 李娜, 李光, 史江波, 李晓苇, 傅广生 2013 物理学报 62 014702]
[8] Yu H Z, Wen Y X 2011 Acta Phys. Sin. 60 038401 (in Chinese) [於黄忠, 温源鑫 2011 物理学报 60 038401]
[9] Li M, Ma H, Liu H R, Jiang Y R, Niu H Y, Amat A 2014 Appl. Phys. Lett. 104 253905
[10] He Z C, Zhong C M, Su S J, Xu M, Wu H B, Cao Y 2012 Nat. Photon. 6 591
[11] Li G, Zhu R, Yang Y 2012 Nat. Photon. 6 153
[12] Cai W Z, Gong X, Cao Y 2010 Sol. Energy Mater. Sol. Cells 94 114
[13] Gao Y, Yip H L, Chen K S, O'malley K M, Acton O, Sun Y, Ting G, Chen H Z, Jen A K Y 2011 Adv. Mater. 23 1903
[14] Zhang Y P, Li Y, Li C Z, Wang W W, Zhang J Y, Wang R M 2012 Rare Metals 31 168
[15] Kim H, Park J, Lee S, Ha C S, Kim Y 2011 Sol. Energy Mater. Sol. C 95 349
[16] Wang P, Guo R D, Chen Y, Yue S Z, Zhao Y, Liu S Y 2013 Acta Phys. Sin. 62 088801 (in Chinese) [王鹏, 郭闰达, 陈宇, 岳守振, 赵毅, 刘式墉 2013 物理学报 62 088801]
[17] Derbal-Habak H, Bergeret C, Cousseau J, Nunzi J M 2011 Sol. Energy Mater. Sol. Cells 95 S53
[18] Liu Z Y, He D W, Wang Y S, Wu H P, Wang J G 2010 Synth. Met. 160 1036
[19] Gu J H, Zhong Z Y, He X, Sun F L, Chen S B 2009 J. South-Central Univ. Natl. (Nat. Sci. Edition) 28 57 (in Chinese) [顾锦华, 钟志有, 何翔, 孙奉娄, 陈首部 2009 中南民族大学学报: 自然科学版 28 57]
[20] Suzuki A, Zushi M, Suzuki H, Ogahara S, Akiyama T, Oku T 2014 AIP Conf. Proc. 1585 164
[21] Lee J M, Kwon B H, Park H I, Kim H, Kim M G, Park J S, Kim E S, Yoo S, Jeon D Y, Kim S O 2013 Adv. Mater. 25 2011
[22] Yu H Z 2012 J. Funct Mater. 43 2970 (in Chinese) [於黄忠 2012 功能材料 43 2970]
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