首页|π-Extended giant dimeric acceptor as a third component enables highly efficient ternary organic solar cells with efficiency over 19.2％

π-Extended giant dimeric acceptor as a third component enables highly efficient ternary organic solar cells with efficiency over 19.2％

扫码查看
原文链接
  • NETL
  • NSTL
  • 万方数据
Ternary strategy with a suitable third component is a successful strategy to improve the photovoltaic per-formance of organic solar cells(OSCs).Very recently,Y-series based giant molecule acceptors or oligomerized acceptors have emerged as promising materials for achieving highly efficient and stable binary OSCs,while application as third component for ternary OSCs is limited.Here a novel n-extended giant dimeric acceptor,GDF,is developed based on central Y series core fusion and rigid BDT as linker,and then incorporated into the state-of-the-art PM1:PC6 system to construct ternary OSCs.The GDF has a near planar backbone,resulting in increased π-conjugation,excellent crystallinity,and good electron transport capacity.When GDF is introduced into the PM1:PC6 system,it ensues in a cas-cade like the lowest unoccupied molecular orbitals(LUMO)energy level alignment,a complementary absorption band with PM1 and PC6,higher and balanced hole and electron mobility,slightly smaller domain size,and a higher exciton dissociation probability for PM1:PC6:GDF(1:1.1:0.1)blend film.As a consequence,the PM1∶PC6∶GDF(1∶1.1∶0.1)ternary OSC achieves a champion PCE of 19.22％,with a sig-nificantly higher open-circuit voltage and short-circuit current density,compared to 18.45％for the PM1:PC6(1:1.2)binary OSC.Our findings show that employing a π-extended giant dimeric acceptor as a third component significantly improves the photovoltaic performance of ternary OSCs.

Giant dimeric acceptorThird componentTernary organic solar cells

Mengran Peng、Haotian Wu、Liming Wu、Jianhua Chen、Ruijie Ma、Qunping Fan、Hua Tan、Weiguo Zhu、Hongxiang Li、Junqiao Ding

展开 >

School of Chemical Science and Technology,Yunnan University,Kunming 650500,Yunnan,China

Department of Electrical and Electronic Engineering,Research Institute for Smart Energy(RISE),Guangdong-Hong Kong-Macao(GHM)Joint Laboratory for Photonic-Thermal-Electrical Energy Materials and Devices,The Hong Kong Polytechnic University,Kowloon,Hong Kong 999077,China

State Key Laboratory for Mechanical Behavior of Materials,Xi'an Jiaotong University,Xi'an,710049,Shaanxi,China

School of Materials Science and Engineering,Jiangsu Engineering Laboratory of Light-Electricity-Heat Energy-Converting Materials and Applications,Changzhou University,Changzhou 213164,Jiangsu,China

College of Polymer Science and Engineering,State Key Laboratory of Polymer Materials Engineering,Sichuan University,Chengdu 610065,Sichuan,China

展开 >

Yunnan Fundamental Research ProjectYunnan Fundamental Research ProjectSichuan Science and Technology ProgramSchool of Materials Science and EngineeringJiangsu Engineering Laboratory of Light-Electricity-Heat Energy-Converting Materials and Applications

202301BF070001-009KC-222223572023NSFSC0990

2024

10.1016/j.jechem.2024.03.038

能源化学
中国科学院大连化学物理研究所 中国科学院成都有机化学研究所

能源化学

CSTPCDEI
影响因子：0.654
ISSN：2095-4956
年,卷(期)：2024.95(8)