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- Changing inter-molecular spin-orbital coupling for generating magnetic field effects in phosphorescent organic semiconductors
- Univ Tennessee
- Universidade Estadual Paulista (UNESP)
- Universidade Federal do Paraná (UFPR)
- Changchun Inst Appl Chem
- Huazhong Univ Sci & Technol
- U.S. NSF
- China NSF
- Conselho Nacional de Desenvolvimento Científico e Tecnológico (CNPq)
- Fundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
- NSF: ECCS-046645
- U.S. NSF: OISE-0929566
- China NSF: 50928302
- Phosphorescent organic semiconductors normally show negligible magnetic field effects in electronic and optic responses. These phenomena have been generally attributed to strong spin-orbital coupling which can dominate internal spin-dephasing process as compared with applied magnetic field. This paper reports both positive and negative magnetocurrents from phosphorescent organic semiconductors through dissociation and charge-reaction channels when the intermolecular spin-orbital coupling is changed based on materials mixing. Our experimental results indicate that inter-molecular spin-orbital coupling is essentially responsible for the generation of magnetic field effects in phosphorescent organic semiconductors. (C) 2012 American Institute of Physics. [doi:10.1063/1.3673561]
- Applied Physics Letters. Melville: Amer Inst Physics, v. 100, n. 1, p. 3, 2012.
- American Institute of Physics (AIP)
- Acesso aberto
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