X-ray microscopic investigation of molecular orientation in a hole carrier thin film for organic solar cells

Abstract : As dipyranylidenes are excellent hole carriers, applications in organic solar cells or organic light emitting diode are envisaged. In the present study, we investigate the morphology of 2,2′,6,6′-tetraphenyl-4,4′-dipyranylidene (DIPO-Ph$_4$) deposited under vacuum on a silicon nitride (Si$_3$N$_4$) substrate, a paradigmatic system for the study of molecular crystal/inorganic substrate interfaces. Samples with various coating ratios and different thermal treatments were prepared. The films were characterized by atomic force microscopy and scanning transmission X-ray microscopy to gain insight into material growth. The results show a change in orientation at a molecular level depending upon the evaporation conditions. We are now able to tailor an organic layer with a specific molecular orientation and a specific electronic behavior.
Document type :
Journal articles
Complete list of metadatas

https://hal-cea.archives-ouvertes.fr/cea-01659809
Contributor : Serge Palacin <>
Submitted on : Wednesday, January 17, 2018 - 4:11:42 PM
Last modification on : Thursday, March 21, 2019 - 1:09:03 PM
Long-term archiving on : Monday, May 7, 2018 - 6:36:16 PM

File

STXM.pdf
Publisher files allowed on an open archive

Identifiers

Citation

Quentin Arnoux, Benjamin Watts, Sufal Swaraj, Francois Rochet, Ludovic Tortech. X-ray microscopic investigation of molecular orientation in a hole carrier thin film for organic solar cells. Nano Research, Springer, 2017, 5, pp.2771-2782. ⟨https://doi.org/10.1007/s12274-017-1907-6⟩. ⟨10.1007/s12274-017-1907-6⟩. ⟨cea-01659809⟩

Share

Metrics

Record views

869

Files downloads

161