Show simple item record

dc.contributor.authorBagchi, Kushal
dc.contributor.authorJackson, Nicholas E.
dc.contributor.authorGujral, Ankit
dc.contributor.authorHuang, Chengbin
dc.contributor.authorToney, Michael F.
dc.contributor.authorYu, Lian
dc.contributor.authorde Pablo, Juan J.
dc.contributor.authorEdiger, M. D.
dc.date.accessioned2019-03-21T16:03:05Z
dc.date.available2019-03-21T16:03:05Z
dc.date.issued2018-12-24
dc.identifier.citationJ. Phys. Chem. Lett., 2019, 10 (2), pp 164–170en_US
dc.identifier.urihttp://digital.library.wisc.edu/1793/79047
dc.description.abstractAnisotropic molecular packing is a key feature that makes glasses prepared by physical vapor deposition (PVD) unique materials, warranting a mechanistic understanding of how a PVD glass attains its structure. To this end, we use X-ray scattering and ellipsometry to characterize the structure of PVD glasses of tris(8-hydroxyquinoline) aluminum (Alq3), a molecule used in organic electronics, and compare our results to simulations of its supercooled liquid. X-ray scattering reveals a tendency for molecular layering in Alq3 glasses that depends upon the substrate temperature during deposition and the deposition rate. Simulations reveal that the Alq3 supercooled liquid, like liquid metals, exhibits surface layering. We propose that the layering in Alq3 glasses observed here as well as the previously reported bulk dipole orientation are inherited from the surface structure of the supercooled liquid. This work significantly advances our understanding of the mechanism governing the formation of anisotropic structure in PVD glasses.en_US
dc.description.sponsorshipUS Department of Energy, Office of Basic Energy Sciences, Division of Materials Sciences and Engineering, Award DE-SC0002161 NSF through the University of Wisconsin Materials Research Science and Engineering Center (DMR-1720415) Argonne National Laboratory Maria Goeppert Mayer Named Fellowship U.S. Department of Energy, Office of Science, Office of Basic Energy Sciences, under Contract DE-AC02-76SF00515en_US
dc.language.isoen_USen_US
dc.publisherAmerican Chemical Societyen_US
dc.titleOrigin of Anisotropic Molecular Packing in Vapor-Deposited Alq3 Glassesen_US
dc.typeArticleen_US
dc.identifier.doi10.1021/acs.jpclett.8b03582


Files in this item

Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail
Thumbnail

This item appears in the following Collection(s)

Show simple item record