聚(3-己基噻吩)作为光谱增感层在有机太阳电池光谱响应增强中的应用

引用本文: 吴振武, 刘扬, 韦尚江, 黄训, 张东煜, 周明, 陈立桅, 马昌期, 王华. 聚(3-己基噻吩)作为光谱增感层在有机太阳电池光谱响应增强中的应用[J]. 物理化学学报, 2013, 29(08): 1735-1744. doi: 10.3866/PKU.WHXB201305241 shu

Citation: WU Zhen-Wu, LIU Yang, WEI Shang-Jiang, HUANG Xun, ZHANG Dongyu, ZHOU Ming, CHEN Liwei, MA Chang-Qi, WANG Hua. Spectrum Response Enhancement of Organic Solar Cell Using a Poly(3-hexylthiophene) Photosensitizing Layer[J]. Acta Physico-Chimica Sinica, 2013, 29(08): 1735-1744. doi: 10.3866/PKU.WHXB201305241 shu

聚(3-己基噻吩)作为光谱增感层在有机太阳电池光谱响应增强中的应用

吴振武 ^1,2, ,
刘扬 ^3, ,
韦尚江 ^4, ,
黄训 ^4, ,
张东煜 ^2, ,
周明 ^3, ,
陈立桅 ^4, ,
马昌期 ^2, ,
王华 ^1,

基金项目:
国家自然科学基金(91123034, 61274056) (91123034, 61274056)

山西省科技创新重点团队(2012041011)资助项目 (2012041011)

摘要:

报道了利用聚(3-己基噻吩)(P3HT)作为前置缓冲层来弥补(4,8-双-(2-乙基己氧基)-苯并[1,2-b:4,5-b']二噻吩)-(4-氟代噻并[3,4-b]噻吩(PBDT-TT-F):[6,6]-苯基-C₆₁-丁酸甲酯(PC₆₁BM)共混体相异质结(BHJ)电池对450-600 nm处光谱响应不足的新的器件结构设计思路. 光谱带隙为1.8 eV的PBDT-TT-F 在550-700 nm处有很强的光谱吸收, 在有机太阳电池器件上有很好的应用潜能. 但其在350-550 nm处的吸收不强, 影响了器件对太阳光谱的利用效率. 与此相比, P3HT薄膜的光谱吸收主要在450-600 nm范围内, 同PBDT-TT-F 形成良好的互补关系. 新设计的器件外量子效率(EQE)研究结果表明, 利用P3HT 作为前置缓冲层可以与PBDT-TT-F:PC₆₁BM薄膜中的PC₆₁BM形成平面异质结, 从而拓展了器件在450-600 nm处的光谱响应范围,实现光谱增感作用. 优化P3HT的厚度为20 nm左右, 器件对外输出的短路光电流密度从11.42 mA·cm^-2提高到12.15 mA·cm^-2, 达到了6.3%的提升.

关键词:

English

Spectrum Response Enhancement of Organic Solar Cell Using a Poly(3-hexylthiophene) Photosensitizing Layer

1.
1 Key Laboratory of Interface Science and Engineering in Advanced Materials of Ministry of Education, Research Center of Advanced Materials Science and Technology, Taiyuan University of Technology, Taiyuan, 030024, P. R. China;
2 Printable Electronics Research Center, Suzhou Institute of Nano-Tech and Nano-Bionics (SINANO), Chinese Academy of Sciences, Suzhou 215123, P. R. China;
3 Division of Nanobiomedicine, SINANO, Chinese Academy of Sciences, Suzhou 215123, P. R. China;
4 International Laboratory, SINANO, Chinese Academy of Sciences, Suzhou 215123, P. R. China
Received Date: 29 March 2013
Available Online: 09 July 2013
Fund Project:
国家自然科学基金(91123034, 61274056)

山西省科技创新重点团队(2012041011)资助项目

Abstract:

We report here the photovoltaic performance of a solar cell using poly-{[4,8-bis[(2-ethylhexyl) oxy]-benzo[1,2-b:4,5-b']dithiophene-2,6-diyl]-alt-[3-fluore-2-(octyloxy)carbonyl-thieno[3,4-b]thiophene-4,6- diyl]} (PBDT-TT-F):[6,6]-phenyl-C₆₁-butyric acid methyl ester (PC₆₁BM) as the photoactive layer in combination with a thin poly(3-hexylthiophene) (P3HT) film as a photosensitizing layer. PBDT-TT-F strongly absorbs light in the wavelength range of 550-700 nm, but it absorbs relatively weakly in the range of 350-550 nm. In contrast, a P3HT film shows intensive absorption ability in the 450-600 nm region, suggesting that the absorptions of these two materials complement each other to give a broad range. An organic solar cell with the structure indium tin oxide (ITO)/poly(3,4-ethylenedioxythiophene)- polystyrenesulfonic acid (PEDOT:PSS)/P3HT/ PBDT-TT-F:[6,6]-phenyl C₆₁-butyric acid methyl ester (PC₆₁BM)/LiF/Al was fabricated in which P3HT was deposited between the hole transporting layer (PEDOT: PSS) and bulk heterojunction (BHJ) photoactive layer (PBDT-TT-F:PC₆₁BM). This solar cell exhibited improved spectrum response in the wavelength range of 450-600 nm compared with one without a P3HT layer, which is attributed to the photosensitizing effect of the P3HT film. Optimization of the thickness of P3HT led to an increase of short-circuit current density (JSC) from 11.42 to 12.15 mA·cm^-2.

Key words:

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聚(3-己基噻吩)作为光谱增感层在有机太阳电池光谱响应增强中的应用

English

Spectrum Response Enhancement of Organic Solar Cell Using a Poly(3-hexylthiophene) Photosensitizing Layer

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南：你的皮肤可能是一片SPMs

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通讯作者: 陈斌, bchen63@163.com

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聚(3-己基噻吩)作为光谱增感层在有机太阳电池光谱响应增强中的应用

English

Spectrum Response Enhancement of Organic Solar Cell Using a Poly(3-hexylthiophene) Photosensitizing Layer

CCS Chemistry：嵌段共聚物自组装成 “三明治”二维有机材料，实现纳米级压力传感功能

CCS Chemistry：颜徐州、鲍哲南： 你的皮肤可能是一片SPMs

CCS Chemistry：工作高效不疲劳，只须让催化剂动起来

CCS Chemistry：静电组装导向聚合- 聚电解质纳米凝胶量化制备新策略

CCS Chemistry：金黄色葡萄球菌醛基脱氢酶是如何识别特异性底物的？

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