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Here, measurements of Hall effect and Raman spectra of an organic semiconductor as a function of uniaxial mechanical strain are reported. This study reveals a very strong, anisotropic, and reversible modulation of the intrinsic (trap\u2010free) charge carrier mobility of single\u2010crystal rubrene transistors with strain, showing that the effective mobility of organic circuits can be enhanced by up to 100% with only 1% of compressive strain. Consistently, Raman spectroscopy reveals a systematic shift of the low\u2010frequency Raman modes of rubrene to higher (lower) frequencies with compressive (tensile) strain, which is indicative of a reduction (enhancement) of thermal molecular disorder in the crystal with strain. This study lays the foundation of the strain engineering in organic electronics and advances the knowledge of the relationship between the carrier mobility, low\u2010frequency vibrational modes, strain, and molecular disorder in organic semiconductors.<\/jats:p>","DOI":"10.1002\/advs.201901824","type":"journal-article","created":{"date-parts":[[2019,11,13]],"date-time":"2019-11-13T09:55:04Z","timestamp":1573638904000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":53,"title":["A Large Anisotropic Enhancement of the Charge Carrier Mobility of Flexible Organic Transistors with Strain: A Hall Effect and Raman Study"],"prefix":"10.1002","volume":"7","author":[{"given":"Hyun Ho","family":"Choi","sequence":"first","affiliation":[{"name":"Department of Physics Rutgers University  Piscataway NJ 08854 USA"},{"name":"School of Materials Science and Engineering and Engineering Research Institute Gyeongsang National University  Jinju 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