首页|18.55％Efficiency Polymer Solar Cells Based on a Small Molecule Acceptor with Alkylthienyl Outer Side Chains and a Low-Cost Polymer Donor PTQ10
18.55％Efficiency Polymer Solar Cells Based on a Small Molecule Acceptor with Alkylthienyl Outer Side Chains and a Low-Cost Polymer Donor PTQ10
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NETL
NSTL
万方数据
The development of A-DA'D-A type small molecule accep-tors(SMAs)has promoted the rapid progress of polymer solar cells(PSCs)in recent years.The outer side chains on the terminal thiophene ring and inner side chains on nitrogen atoms of the pyrrole ring of the DA'D fused ring play impor-tant roles in the photovoltaic performance of the SMAs.Here,we synthesized two new SMAs,2,2'-((2Z,2'Z)-((12,13-bis(2-ethylhexyl)-3,9-bis(4-(2-ethylhexyl)thiophen-2-yl)-12,13-dihydro-[1,2,5]thiadiazolo[3,4-e]thieno[2",3":4',5']thieno[2',3':4,5]pyrrolo[3,2-g]thieno[2',3':4,5]thieno[3,2-b]indole-2,10-diyl)bis(methaneylylidene))bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene))dimalononitrile(T2EH)and 2,2'-((2Z,2'Z)-((12,13-bis(2-ethylhexyl)-3,9-bis(3-(2-ethylhexyl)phenyl)-12,13-dihydro-[1,2,5]thiadiazolo[3,4-e]thieno[2",3":4',5']thieno[2',3':4,5]pyrrolo[3,2-g]thieno[2',3':4,5]thieno[3,2-b]indole-2,10-diyl)bis(methaneylylidene))bis(5,6-difluoro-3-oxo-2,3-dihydro-1H-indene-2,1-diylidene)(P2EH),with 2-ethylhexylβ-substituted thienyl or phenyl as the outer side chains,respectively,to improve the photovoltaic properties of the SMAs.Compared with P2EH,T2EH exhibits closer π-π stack-ing,slightly red-shifted absorption,and higher electron mo-bility.Moreover,the active layer of T2EH blended with the low-cost polymer donor poly[(thiophene)-alt-(6,7-difluoro-2-(2-hexyldecyloxy)quinoxaline)](PTQ10)possesses higher mobilities,a longer lifetime,and less recombination of the charge carriers in comparison with that of the PTQ10∶P2EH active layer.Eventually,the PTQ10∶T2EH-based PSCs showed an outstanding power conversion efficiency(PCE)of 18.55％,while the PSC based on PTQ10∶P2EH displayed a PCE of 17.50％.Importantly,18.55％is the highest PCE in the PTQ10-based binary PSCs so far.The results indicate that T2EH is one of the best SMAs for the PTQ10-based PSCs and is a promising SMA for the application of PSCs.
polymer solar cellsA-DA'D-A type small molecule acceptorsside chain engineeringthio-phene conjugated side chains
Beijing National Laboratory for Molecular Sciences,CAS Key Laboratory of Organic Solids,Institute of Chemistry,Chinese Academy of Sciences,Beijing 100190
School of Chemical Science,University of Chinese Academy of Sciences,Beijing 100049
College of Chemistry,Green Catalysis Center,Zhengzhou University,Zhengzhou 450001
CAS Key Laboratory of Nanosystem and Hierarchical Fabrication,CAS Center for Excellence in NanPSCience,National Center for NanPSCience and Technology,100190 Beijing
Key Laboratory of Photochemical Conversion and Optoelectronic Materials,Technical Institute of Physics and Chemistry,Chinese Academy of Sciences,Beijing 100190
Laboratory of Advanced Optoelectronic Materials,Suzhou Key Laboratory of Novel Semiconductor Materials and Devices,College of Chemistry,Chemical Engineering and Materials Science,Soochow University,Suzhou,Jiangsu 215123
展开 >
国家重点研发计划国家自然科学基金国家自然科学基金国家自然科学基金Basic and Applied Basic Research Major Program of Guangdong Province
NETL
NSTL
万方数据
