Journal of Materials Chemistry A p. 6916 - 6921 (2014)
Update date:2022-08-04
Topics:
Sakthivel, Pachagounder
Kranthiraja, Kakaraparthi
Saravanan, Chinnusamy
Gunasekar, Kumarasamy
Kim, Hong Il
Shin, Won Suk
Jeong, Ji-Eun
Woo, Han Young
Jin, Sung-Ho
To understand the effect of interfacial contact between the hole transporting layer (HTL) and fullerene derivatives in the active layer of bulk heterojunction polymer solar cells (BHJ PSCs), carbazole (Cz) linked phenylquinoline (PhQ)-based fullerene derivatives, PhQHCz-C61BM and PhQEOCz-C61BM, have been successfully synthesized. They are used as acceptors with a poly(3-hexylthiophene) (P3HT) donor in the active layer, and PEDOT:PSS and MoO3 were used as the HTL. Both the derivatives are highly soluble in common organic solvents and possess high thermal stability. BHJ PSCs are fabricated with configurations of ITO/PEDOT:PSS/P3HT:PhQHCz-C 61BM/LiF/Al, ITO/PEDOT:PSS/P3HT:PhQEOCz-C61BM/LiF/Al, and ITO/MoO3/P3HT:PhQHCz-C61BM/LiF/Al, ITO/MoO 3/P3HT:PhQEOCz-C61BM/LiF/Al, and the device characteristics were measured under AM1.5G (100 mW cm-2). Both derivatives exhibited much lower power conversion efficiencies (PCE) of ~0.1% when PEDOT:PSS was employed as the HTL. In contrast, the PCE increases to ~2.2% upon replacing PEDOT:PSS with MoO3 as the HTL. This is due to the fact that protonation of the pyridyl nitrogen of the acceptor in the active layer by the -SO3H group of PEDOT:PSS in the HTL, establishes a charge injection barrier at the interfacial contact and leads to restricted charge collection at the electrodes. This was indirectly confirmed by protonation of pyridyl nitrogen in PhQHCz-C61BM by the -SO 3H group in p-toluenesulphonic acid.
View MoreShouguang Haogang Chemical Co., Ltd.
Contact:86-0536-5672678
Address:Bohai Chemical Industrial Park,
Shaanxi King Stone Enterprise Company Limited
Contact:86-29-88353805,13609285751
Address:.209 Keji Road Hi-Tech industrial Develpment Zone .Xian China
Chengdu Chengnuo New-Tech Co., Ltd
Contact:0086-028-85749078
Address:4 Jiuyang road,Jiulong industrial port,Chengdu, China
Shijiazhuang Xinsheng Chemical Co., Ltd
Contact:+86-311-85965567
Address:Dongyang industry zone,xinle
Nanjing chemipioneer pharmaceutical & technology Co., LTD
website:http://www.chemipioneer.com.cn
Contact:+86-25-52685700
Address:Room 305,A Block,Biological-Medicine Building,Business Start-up Center,Xin-ke 1st Road, High-tech development zone,Nanjing city,Jiangsu Province, China
Doi:10.1021/om050834w
(2006)Doi:10.1002/ejoc.201300818
(2013)Doi:10.1002/ejoc.201500228
(2015)Doi:10.1039/b703370b
(2007)Doi:10.1021/ja01607a053
(1955)Doi:10.1021/jo2011335
(2011)