Carrier Dynamics and Morphology Regulated by 1,8-Diiodooctane in Chlorinated Nonfullerene Polymer Solar Cells

Chen, Hui1,2; Qu, Jianfei1,2; Liu, Longzhu1,2; Chen, Wei3,4; He, Feng1,2

2019-03-07

10.1021/acs.jpclett.9b00063

Journal of Physical Chemistry Letters   影响因子和分区

1948-7185

Very small amounts of 1,8-diiodooctane (DIO) are very effective at optimizing the performance of polymer solar cells (PSCs). To date, the underlying influences are not yet fully understood, especially in nonfullerene PSCs. Herein, the influence of DIO on carrier dynamics and morphology in the PBDBT2Cl:IT4F system was investigated in detail. We combined the characterization of the transient dynamics with the morphology characterization of PSC devices to explore the origin of enhanced performance. Compared to the cast device, the champion device with 0.5% DIO revealed the maximum of current density (J(sc)) and fill factor (FF). The optimum DIO content helps to enhance carrier transport and optimize morphology, while excess DIO produces adverse effects due to the induced intense aggregation and dilated size in blend films. The results provide some hints of improved device performance upon using DIO as an additive in nonfullerene PSCs.

SCI ; EI

英语

NI期刊

第一 ; 通讯

U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences[DE-AC02-06CH11357]

Chemistry ; Science & Technology - Other Topics ; Materials Science ; Physics

Chemistry, Physical ; Nanoscience & Nanotechnology ; Materials Science, Multidisciplinary ; Physics, Atomic, Molecular & Chemical

WOS:000461271700006

AMER CHEMICAL SOC

20191106618615

Dynamics ; Morphology ; Solar cells

Solar Cells:702.3 ; Materials Science:951

Web of Science

1.Southern Univ Sci & Technol, Dept Chem, Shenzhen 518055, Peoples R China
2.Southern Univ Sci & Technol, Shenzhen Grubbs Inst, Shenzhen 518055, Peoples R China
3.Argonne Natl Lab, Div Mat Sci, 9700 Cass Ave, Lemont, IL 60439 USA
4.Univ Chicago, Inst Mol Engn, 5640 South Ellis Ave, Chicago, IL 60637 USA

Chen, Hui,Qu, Jianfei,Liu, Longzhu,et al. Carrier Dynamics and Morphology Regulated by 1,8-Diiodooctane in Chlorinated Nonfullerene Polymer Solar Cells[J]. Journal of Physical Chemistry Letters,2019,10(5):936-942.

Chen, Hui,Qu, Jianfei,Liu, Longzhu,Chen, Wei,&He, Feng.(2019).Carrier Dynamics and Morphology Regulated by 1,8-Diiodooctane in Chlorinated Nonfullerene Polymer Solar Cells.Journal of Physical Chemistry Letters,10(5),936-942.

Chen, Hui,et al."Carrier Dynamics and Morphology Regulated by 1,8-Diiodooctane in Chlorinated Nonfullerene Polymer Solar Cells".Journal of Physical Chemistry Letters 10.5(2019):936-942.