Impact of 1,8-diiodooctane on the morphology of organic photovoltaic (OPV) devices - A Small Angle Neutron Scattering (SANS) study

• Tipo: Artigo em Revista Científica Internacional
• Data: 2020

Autores

Bernardo, G (Autor) FEUP; Gaspar, H (Autor) Outra; Perez, GE (Autor) Outra; Shackleford, ASD (Autor) Outra; Parnell, AJ (Autor) Outra; Bleuel, M (Autor) Outra; Adélio Mendes (Autor) FEUP; King, SM (Autor) Outra; Parnell, SR (Autor) Outra

Revista

Título: Polymer Testing

Vol. 82

ISSN: 0142-9418

Editora: Elsevier

Indexação

ISI Web of Knowledge - 0 Citações

Scopus - 3 Citações

Outras Informações

ID Authenticus: P-00R-GF3

DOI: 10.1016/j.polymertesting.2019.106305

Abstract (EN): The impact of the additive 1,8-diiodooctane on the morphology of bulk-heterojunction solar cells based on the systems P3HT:PC71BM, PTB7:PC71BM and PTB7-Th:PC71BM is studied using a combination of Small Angle Neutron Scattering (SANS) and Atomic Force Microscopy (AFM). The results clearly show that while in the P3HT:PC71BM system, the additive DIO promotes a slight coarsening of the phase domains (type I additive), in the systems PTB7:PC71BM and PTB7-Th:PC71BM, DIO promotes a large decrease in the size of the phase domains (type II additive). SANS is demonstrated as being particularly useful at detecting the minor morphological changes observed in the P3HT:PC71BM system, which can be hardly seen in AFM. This work illustrates how SANS complements AFM and both techniques when used together provide a deeper insight into the nanoscale structure in thin organic photovoltaic (OPV) device films.

Idioma: Inglês

Tipo (Avaliação Docente): Científica

Nº de páginas: 9