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Citation: LI Sijun, WANG Sisi, ZHANG Baohua, YANG Xiaoniu. Effect of Functional End-Group on Optoelectronic Properties of Poly(3-butylthiophene)[J]. Chinese Journal of Applied Chemistry, ;2014, 31(1): 20-24. doi: 10.3724/SP.J.1095.2014.30152 shu

Effect of Functional End-Group on Optoelectronic Properties of Poly(3-butylthiophene)

LI Sijun ^a,b ,
WANG Sisi ^a,b ,
ZHANG Baohua ^a ,
YANG Xiaoniu ^a,,

1.
a Changchun Institute of Applied Chemistry, Chinese Academy of Sciences, Changchun 130021, China;
2.
b University of Chinese Academy of Sciences, Beijing 100049, China

Corresponding author: YANG Xiaoniu,
Received Date: 27 March 2013
Available Online: 20 May 2013
Fund Project: 国家高技术研究发展计划(863)(2011AA050524) (863)(2011AA050524)中国科学院太阳能行动计划(KGCX2-YW-399+9) (KGCX2-YW-399+9)

In this work,we systematically studied the optoelectronic properties of four poly(3-butylthiophene)(P3BT) with different functional end-groups.The end-groups were found to be detrimental to the crystallization of P3BT.Nevertheless,the end-groups could modify the surface energy of P3BT and therefore achieve the tunable miscibility and film morphology of P3BT:PCBM blends.The solar cell devices based on these P3BTs with functional end-groups as donor materials have been fabricated and tested.We demonstrated that the allyl-terminated P3BT has relative higher crystallinity.And the appropriate miscibility of allylterminated P3BT and PCBM could lead to an ideal micro phase separation morphology of P3BT:PCBM in the active layer of solar cell device.The corresponding photovoltaic device performance could reach 3.1% which is 35% higher than that of conventional device using bromide-terminated P3BT.
- end-group,
- poly(butylthiophene),
- miscibility,
- optoelectronic property
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