Ternary strategy: An analogue as third component reduces the energy loss and improves the efficiency of polymer solar cells

Liu，Longzhu1,2; Lai，Hanjian1,2; He，Feng2,3

2022-07-01

10.1016/j.jechem.2022.02.025

Journal of Energy Chemistry   影响因子和分区

2095-4956

Ternary strategy is a convenient and effective method to boost the performance of polymer solar cells (PSCs). Utilizing a ternary strategy to trade-off between the energy loss and the efficiency of devices however requires further exploration. Here, through the hydroxyl (–OH) and acetoxy (-OCOMe) substitution at β-position of the IC terminal group, we developed two new synthetic acceptors, BTIC-OH-β and BTIC-OCOMe-β, which were designed to confine the morphology aggregation. Introduction of an analogue as the third component provides a simple but efficient way to further balance the short current density (J) and open-circuit voltage (V), leading to a champion efficiency based on PBDB-T:PBDB-TF:BTIC-OCOMe-β, effectively as high as 12.45%. The results were examined mainly in terms of the morphology characterization, electroluminescence external quantum efficiency (EQE), steady-state photoluminescence (PL) and transient technology. It suggested fine-tuning of the morphology by ratio modulation, reduction of the energy loss, construction of a promising pathway for charge transfer in the ternary system and enhancing the carrier extraction. In this way, a ternary strategy with an analogue donor could provide more routes to higher-quality solar cells.

Energy loss Polymer solar cell Ternary strategy Trade-off

SCI ; EI

英语

通讯

National Nat-ural Science Foundation of China[21975115,21733005] ; Shen-zhen Fundamental Research Program["JCYJ20190809163011543","JCYJ20200109140801751"] ; Guangdong Provincial Key Labora-tory of Catalysis[2020B121201002] ; Guangdong Innovative and Entrepreneurial Research Team Program[2016ZT06G587] ; Shenzhen Sci-Tech Fund["KYTDPT20181011104007","F30"]

Chemistry ; Energy & Fuels ; Engineering

Chemistry, Applied ; Chemistry, Physical ; Energy & Fuels ; Engineering, Chemical

WOS:000781651100008

ELSEVIER

20221111792994

Charge transfer ; Economic and social effects ; Energy efficiency ; Morphology ; Open circuit voltage ; Polymer solar cells ; Quantum theory

Energy Conservation:525.2 ; Energy Losses (industrial and residential):525.4 ; Solar Cells:702.3 ; Chemical Reactions:802.2 ; Physical Properties of Gases, Liquids and Solids:931.2 ; Quantum Theory; Quantum Mechanics:931.4 ; Materials Science:951 ; Social Sciences:971

2-s2.0-85126270391

Scopus

1.School of Chemistry and Chemical Engineering,Harbin Institute of Technology,Harbin,Heilongjiang,150001,China
2.Shenzhen Grubbs Institute and Department of Chemistry,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China
3.Guangdong Provincial Key Laboratory of Catalysis,Southern University of Science and Technology,Shenzhen,Guangdong,518055,China

Liu，Longzhu,Lai，Hanjian,He，Feng. Ternary strategy: An analogue as third component reduces the energy loss and improves the efficiency of polymer solar cells[J]. Journal of Energy Chemistry,2022,70:67-73.

Liu，Longzhu,Lai，Hanjian,&He，Feng.(2022).Ternary strategy: An analogue as third component reduces the energy loss and improves the efficiency of polymer solar cells.Journal of Energy Chemistry,70,67-73.

Liu，Longzhu,et al."Ternary strategy: An analogue as third component reduces the energy loss and improves the efficiency of polymer solar cells".Journal of Energy Chemistry 70(2022):67-73.