%0 Journal Article %T X-ray microscopic investigation of molecular orientation in a hole carrier thin film for organic solar cells %+ Laboratoire de Chimie Physique - Matière et Rayonnement (LCPMR) %+ Laboratoire Innovation en Chimie des Surfaces et NanoSciences (LICSEN UMR 3685) %+ Institut Parisien de Chimie Moléculaire (IPCM) %+ Paul Scherrer Institute c/o Institute of Particle Physics %+ Synchrotron SOLEIL (SSOLEIL) %A Arnoux, Quentin %A Watts, Benjamin %A Swaraj, Sufal %A Rochet, Francois %A Tortech, Ludovic %< avec comité de lecture %@ 1998-0124 %J Nano Research %I Springer %V 11 %P 2771-2782 %8 2017-11-27 %D 2017 %R 10.1007/s12274-017-1907-6 %K Organic solar cells %K Scanning Transmission X-ray Microscopy %K Molecular orientation %K Organic solar cells %Z Chemical Sciences/Material chemistryJournal articles %X 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. %G English %2 https://cea.hal.science/cea-01659809/document %2 https://cea.hal.science/cea-01659809/file/STXM.pdf %L cea-01659809 %U https://cea.hal.science/cea-01659809 %~ CEA %~ UPMC %~ CNRS %~ IPCM %~ LCPMR %~ PUBNIMBE %~ INC-CNRS %~ IRAMIS-NIMBE %~ CEA-UPSAY %~ MICHEM %~ UNIV-PARIS-SACLAY %~ CEA-UPSAY-SACLAY %~ SYNCHROTRON-SOLEIL %~ UPMC_POLE_2 %~ IPCM-E-POM %~ SORBONNE-UNIVERSITE %~ SU-SCIENCES %~ TEST-HALCNRS %~ SU-TI %~ GS-ENGINEERING %~ IRAMIS %~ GS-CHIMIE %~ GS-PHYSIQUE %~ INSTITUT-SCIENCES-LUMIERE %~ ALLIANCE-SU %~ CHIMIE-SU