結合磁性材料、紅熒烯與鈣鈦礦的異質結構介面磁光研究

Under the support from this NSTF project, we have investigate solution process method to grow polymer solar cells with high conversion efficiency, bilayer structure formed by rubrene and nickel, magnetic dynamic behavior of the nickel/rurene bilayer and cobalt strip structure formed on graphene. The main scientific outputs of this project are as follows. (1) The solution process method is used to grow the transmission layer of polymer solar cells, which improves the transmission efficiency and stability, thereby greatly extending the lifetime of the components. The thermal degradation phenomenon of the hole transmission layer produced by the solution process method and the traditional thermal evaporation method is comparatively studied. It is an effective strategy to design buffer layers by mechanisms of thermal inter-diffusion and interaction. Our research group provides key spectroscopic evidences for establishing related physical mechanisms. (2) By alternately stacking Ni and rubrene and adjusting the energy level of the formed double-layer structure, we proposed a mechanism by which the accumulation of electric dipoles at the ferromagnetic/organic semiconductor interface can inhibit spin transfer in the organic semiconductor layer. The physical reason is the formation of the Schottky barrier in the rubrene/nickel heterostructure. (3) For nickel/rubrene bilayers deposited on a Si(100) substrate, by adding a rubrene layer, the highly stable in-plane combined with the tunable out-of-plane ferromagnetic resonance spectra for Ni(x)/rubrene/Si bilayers make them promising materials for use in microwave magnetic devices and spintronics with controllable perpendicular magnetic anisotropy. (4) We demonstrate the preparation of a customized Co/graphene structure, in which the controllability of the coercive force is enhanced. A ferro-ionic control (FeIC) model is proposed, which describes the relationship between the electric potential and coercive force in electrified conditions. We propose a design of an integrated FeIC inductor with field tunability that could strongly impact the field of integrated-circuit design, resulting in wider applications and functionalities of chips. We have achieved the goal of this project as revealed in the proposal. Research results have been published in SCI journals. We appreciate the supports from National Science and Technology Council of Taiwan.