Dominant Spin Relaxation Mechanisms in Organic Semiconductor Alq3

Dominant Spin Relaxation Mechanisms in Organic Semiconductor Alq3

Sridhar Patibandla, Bhargava Kanchibotla, Sandipan Pramanik, Supriyo Bandyopadhyay, Marc Cahay
ISBN13: 9781609601867|ISBN10: 1609601866|EISBN13: 9781609601881
DOI: 10.4018/978-1-60960-186-7.ch017
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MLA

Patibandla, Sridhar, et al. "Dominant Spin Relaxation Mechanisms in Organic Semiconductor Alq3." Theoretical and Technological Advancements in Nanotechnology and Molecular Computation: Interdisciplinary Gains, edited by Bruce MacLennan, IGI Global, 2011, pp. 259-278. https://doi.org/10.4018/978-1-60960-186-7.ch017

APA

Patibandla, S., Kanchibotla, B., Pramanik, S., Bandyopadhyay, S., & Cahay, M. (2011). Dominant Spin Relaxation Mechanisms in Organic Semiconductor Alq3. In B. MacLennan (Ed.), Theoretical and Technological Advancements in Nanotechnology and Molecular Computation: Interdisciplinary Gains (pp. 259-278). IGI Global. https://doi.org/10.4018/978-1-60960-186-7.ch017

Chicago

Patibandla, Sridhar, et al. "Dominant Spin Relaxation Mechanisms in Organic Semiconductor Alq3." In Theoretical and Technological Advancements in Nanotechnology and Molecular Computation: Interdisciplinary Gains, edited by Bruce MacLennan, 259-278. Hershey, PA: IGI Global, 2011. https://doi.org/10.4018/978-1-60960-186-7.ch017

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Abstract

We have measured the longitudinal (T1) and transverse (T2) spin relaxation times in the organic semiconductor tris(8-hydroxyquinolinolato aluminum) - also known as Alq3 - at different temperatures and under different electric fields driving current. These measurements shed some light on the spin relaxation mechanisms in the organic. The two most likely mechanisms affecting T1 are hyperfine interactions between carrier and nuclear spins, and the Elliott-Yafet mode. On the other hand, the dominant mechanism affecting T2 of delocalized electrons in Alq3 remains uncertain, but for localized electrons (bound to defect or impurity sites), the dominant mechanism is most likely spin-phonon coupling.

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