Chew, Annabel R.
Rojas, Geoffrey A.
Kalinin, Sergei V.
Frisbie, C. Daniel
Permanent link to this recordhttp://hdl.handle.net/10754/595440
MetadataShow full item record
AbstractEstablishing fundamental relationships between strain and work function (WF) in organic semiconductors is important not only for understanding electrical properties of organic thin films, which are subject to both intrinsic and extrinsic strains, but also for developing flexible electronic devices. Here we investigate tensile and compressive strain effects on the WF of rubrene single crystals. Mechanical strain induced by thermal expansion mismatch between the substrate and rubrene is quantified by X-ray diffraction. The corresponding WF change is measured by scanning Kelvin probe microscopy. The WF of rubrene increases (decreases) significantly with in-plane tensile (compressive) strain, which agrees qualitatively with density functional theory calculations. An elastic-to-plastic transition, characterized by a steep rise of the WF, occurs at ~0.05% tensile strain along the rubrene π-stacking direction. The results provide the first concrete link between mechanical strain and WF of an organic semiconductor and have important implications for understanding the connection between structural and electronic disorder in soft organic electronic materials.
CitationStrain effects on the work function of an organic semiconductor 2016, 7:10270 Nature Communications
PublisherNature Publishing Group
- Rubrene crystal field-effect mobility modulation via conducting channel wrinkling.
- Authors: Reyes-Martinez MA, Crosby AJ, Briseno AL
- Issue date: 2015 May 5
- Grazing-incidence X-ray diffraction study of rubrene epitaxial thin films.
- Authors: Fumagalli E, Campione M, Raimondo L, Sassella A, Moret M, Barba L, Arrighetti G
- Issue date: 2012 Sep
- Variations of the elastic modulus perpendicular to the surface of rubrene bilayer films.
- Authors: Jhou YW, Yang CK, Sie SY, Chiu HC, Tsay JS
- Issue date: 2019 Feb 27
- n-Channel semiconductor materials design for organic complementary circuits.
- Authors: Usta H, Facchetti A, Marks TJ
- Issue date: 2011 Jul 19
- Organic thin-film electronics from vitreous solution-processed rubrene hypereutectics.
- Authors: Stingelin-Stutzmann N, Smits E, Wondergem H, Tanase C, Blom P, Smith P, de Leeuw D
- Issue date: 2005 Aug