title: Performance Enhancement of Polymer Solar Cells by Using Two Polymer Donors with Complementary Absorption Spectra.
abstract: Performance enhancement of polymer solar cells (PSCs) is achieved by expanding the absorption of the active layer of devices. To better match the spectrum of solar radiation, two polymers with different band gaps are used as the donor material to fabricate ternary polymer cells. Ternary blend PSCs exhibit an enhanced short-circuit current density and open-circuit voltage in comparison with the corresponding HD-PDFC-DTBT (HD)- and DT-PDPPTPT (DPP)-based binary polymer solar cells, respectively. Ternary PSCs show a power conversion efficiency (PCE) of 6.71%, surpassing the corresponding binary PSCs. This work demonstrates that the fabrication of ternary PSCs by using two polymers with complementary absorption is an effective way to improve the device performance.
authors.affiliation: Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing, 100875, China.
authors.forename: Heng
authors.initials: H
authors.lastname: Lu
authors.affiliation: Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing, 100875, China.
authors.forename: Xuejuan
authors.initials: X
authors.lastname: Zhang
authors.affiliation: Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing, 100875, China.
authors.forename: Cuihong
authors.initials: C
authors.lastname: Li
authors.affiliation: Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing, 100875, China.
authors.forename: Hedi
authors.initials: H
authors.lastname: Wei
authors.affiliation: Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing, 100875, China.
authors.forename: Qian
authors.initials: Q
authors.lastname: Liu
authors.affiliation: Key Laboratory of Organic Solids, Institute of Chemistry, Chinese Academy of Sciences, Beijing, 100190, China.
authors.forename: Weiwei
authors.initials: W
authors.lastname: Li
authors.affiliation: Beijing Key Laboratory of Energy Conversion and Storage Materials, College of Chemistry, Beijing Normal University, Beijing, 100875, China.
authors.forename: Zhishan
authors.initials: Z
authors.lastname: Bo
mesh_terms: D004566:Electrodes; D005459:Fluorides / Q000737:chemistry; D018020:Lithium Compounds / Q000737:chemistry; D011108:Polymers / Q000737:chemistry*; D011137:Polystyrenes / Q000737:chemistry; D011789:Quantum Theory; D012993:Solar Energy; D013056:Spectrophotometry, Ultraviolet; D013876:Thiophenes / Q000737:chemistry; D017971:Tin Compounds / Q000737:chemistry
chemical_list: D018020:Lithium Compounds; D011108:Polymers; D011137:Polystyrenes; D013876:Thiophenes; D017971:Tin Compounds; C533756:poly(3,4-ethylenedioxythiophene)-poly(styrenesulfonate); C027651:lithium fluoride; C109984:indium tin oxide; D005459:Fluorides
keywords: complementary absorption; donor polymers; nanofibrils; polymer solar cells; ternary blends