Abstract
π-Conjugated semiconductors, primarily composed of elements with low atomic number, are regarded as promising spin-transport materials due to the weak spin–orbit coupling interaction and hence long spin relaxation time. Moreover, a large number of additional functions of organic semiconductors (OSCs), such as the abundant photo-electric properties, flexibility, and tailorability, endow the organic spintronic devices more unique properties and functionalities. Particularly, the integration of the photo-electric functionality and excellent spin transport property of OSCs in a single spintronic device has even shown great potential for the realization of spin manipulation in OSCs. In this review, the application of OSCs in spintronic study will be succinctly discussed. As the most important and extensive application, the long-distance spin transport property of OSCs will be discussed first. Subsequently, several multifunctional spintronic devices based on OSCs will be summarized. After that, the organic-based magnets used for the electrodes of spintronic devices will be introduced. Finally, according to the latest progress, spin manipulation in OSCs via novel spintronic devices together with other prospects and challenges will be outlined.
Highlights
A huge revolution has been made in the field of information storage since the discovery of the giant magnetoresistance effect and the development of spintronics in the past of 30 years (Baibich et al, 1988; Wolf et al, 2001)
Because of D-hydrogen having a weaker hyperfine interaction, the results show that the device based on D-hydrogen obtained a longer spin diffusion length and a larger MR (Nguyen et al, 2010)
To release the photoresponse characteristic of Organic semiconductors (OSCs), several important techniques play a key role, including the application of liquid nitrogen during the fabrication of organic layer and top electrode, and the interface layer of leaky-AlOX, which facilitates the real spin transport occurring in F16CuPc and the photoresponse effect
Summary
A huge revolution has been made in the field of information storage since the discovery of the giant magnetoresistance effect and the development of spintronics in the past of 30 years (Baibich et al, 1988; Wolf et al, 2001). The integration of the photo-electric functionality and excellent spin transport property of OSCs in a single spintronic device has even shown great potential for the realization of spin manipulation in OSCs. In this review, the application of OSCs in spintronic study will be succinctly discussed.
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