Low temperature,non-halogen solvent processed single-component organic solar cells with 10%efficiency  

作　　者：Zhou Zhang Jjing Wang Zhijie Hu Chengyi Xiao Qiaomei Chen Zheng Tang Weiwei Li 

机构地区：[1]Bejing Advanced Innovation Center for Soft Matter Science and Engineering&State Key Laboratory of Organic-Inorganic Composites,Bejing University of Chemical Technology,Beijing 100029,China [2]Center for Advanced Low-dimension Materials,College of Materials Science and Engineering,Donghua University,Shanghai 201620,China

出　　处：《Chinese Chemical Letters》2023年第12期241-245,共5页中国化学快报（英文版）

基　　金：supported by Beijing Natural Science Foundation(Nos.JQ21006 and 2212045);National Natural Science Foundation of China(NSFC,Nos.52073016 and 92163128);supported by the Fundamental Research Funds for the Central Universities(Nos.buctrc202111,buctrc201828 and XK1802-2);the Opening Foundation of State Key Laboratory of Organic-Inorganic Composites of Beijing University of Chemical Technology(No.oic-202201006).

摘　　要：A double-cable conjugated polymer DCPIC-BO is designed via introducing a long-branched alkyl chains 2-buthyloctyl into the acceptor side unit.Compared with the double-cable polymer(DCPIC-EH)with the 2-ethylhexyl alkyl chains,the solubility of the DCPIC-BO in non-halogen solvents is substantially improved.Therefore,a power conversion efficiency(PCE)of 9.77%can be obtained by the devices processed from o-xylene at 40℃,while the DCPIC-EH cannot be processed due to its poor solubility under this condition.Moreover,PCEs of 10.10%for small-area(0.04 cm^(2))devices and nearly 9%for devices with an area of 1 cm^(2) are achieved using a non-halogenated solid additive in o-xylene,realizing the"absolutely halogen-free"OSC fabrication.

关 键 词：Organic solar cells Non-halogenated solvents Double-cable conjugated polymers Long-branched alkyl chains Solubility 

分 类 号：TM914.4[电气工程—电力电子与电力传动] TQ317[化学工程—高聚物工业]