Full metadata record
DC Field | Value | Language |
---|---|---|
dc.contributor.author | 김명화 | * |
dc.date.accessioned | 2020-08-13T16:30:06Z | - |
dc.date.available | 2020-08-13T16:30:06Z | - |
dc.date.issued | 2020 | * |
dc.identifier.issn | 2211-2855 | * |
dc.identifier.other | OAK-27302 | * |
dc.identifier.uri | https://dspace.ewha.ac.kr/handle/2015.oak/254892 | - |
dc.description.abstract | Advancing the photovoltaic performance of all-polymer solar cells (APSCs) requires a comprehensive understanding of the dependence of the properties of photoactive blend films on the solvents used to process them. We have studied the correlation between the morphology of PTB7-Th:PNDI2OD-T2 blend films prepared using six different processing solvents. Three-dimensional (3D) transmission electron microscopy tomography (TEMT) revealed the influence of the 3D morphology of the PTB7-Th:PNDI2OD-T2 blend films on their photovoltaic performance. The high-performing toluene (TOL)- and o-xylene (XY)-processed blend films displayed power conversion efficiencies (PCEs) of ~4%, which contained nanoscopically networked fibrous PNDI2OD-T2 polymer domains. The films processed using the other solvents exhibited partly disconnected domains or unfavorable vertical phase separation. In addition, the use of N-dimethylformamide (DMF), N,N-dimethylacetamide (DMAc), or N-methyl-2-pyrrolidone (NMP) as a solvent additive in XY solution resulted in a substantial improvement in the PCEs to 6.1%. This large enhancement was attributed to the formation of the better-interconnected narrower crystalline fibrillary structure of PNDI2OD-T2 chains with the aid of solvent additives, as clearly elucidated by 3D-TEMT imaging. This work highlights that APSCs processed from benign nonhalogenated solvents with appropriate additives can outperform APSCs processed from toxic halogenated solvents by affording a favorable blend morphology and that 3D TEMT imaging is a powerful and essential tool for characterizing the true morphology of photoactive layers. © 2020 Elsevier Ltd | * |
dc.language | English | * |
dc.publisher | Elsevier Ltd | * |
dc.subject | Active layer morphology | * |
dc.subject | All-polymer solar cell | * |
dc.subject | Environmentally benign solvent/additive | * |
dc.subject | Molecular dynamics simulation | * |
dc.subject | TEM tomography | * |
dc.title | Influence of 3D morphology on the performance of all-polymer solar cells processed using environmentally benign nonhalogenated solvents | * |
dc.type | Article | * |
dc.relation.volume | 77 | * |
dc.relation.index | SCIE | * |
dc.relation.index | SCOPUS | * |
dc.relation.journaltitle | Nano Energy | * |
dc.identifier.doi | 10.1016/j.nanoen.2020.105106 | * |
dc.identifier.wosid | WOS:000581738300025 | * |
dc.identifier.scopusid | 2-s2.0-85088662169 | * |
dc.author.google | Jung H. | * |
dc.author.google | Jung A.-R. | * |
dc.author.google | Jin S.-M. | * |
dc.author.google | Kim S. | * |
dc.author.google | Heo H. | * |
dc.author.google | Nguyen H.V.T. | * |
dc.author.google | Kim M.J. | * |
dc.author.google | Ahn P. | * |
dc.author.google | Kim M.H. | * |
dc.author.google | Lee Y. | * |
dc.author.google | Lee K.-K. | * |
dc.author.google | Cho J.H. | * |
dc.author.google | Lee E. | * |
dc.author.google | Kim B. | * |
dc.contributor.scopusid | 김명화(57191596821) | * |
dc.date.modifydate | 20240130103418 | * |