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Spin Organic Light Emitting Diodes (OLED) T. Nguyen, E.Ehrenfreund & Z. V. Vardeny

Spin Organic Light Emitting Diodes (OLED) T. Nguyen, E.Ehrenfreund & Z. V. Vardeny Science 337 , 204 (2012). Objective : Develop and characterize OLEDs based on spin-aligned carrier injection of which electro-luminescence (EL) is controlled by magnetic field.

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Spin Organic Light Emitting Diodes (OLED) T. Nguyen, E.Ehrenfreund & Z. V. Vardeny

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  1. Spin Organic Light Emitting Diodes (OLED) T. Nguyen, E.Ehrenfreund & Z. V. Vardeny Science337, 204 (2012) Objective: Develop and characterize OLEDs based on spin-aligned carrier injection of which electro-luminescence (EL) is controlled by magnetic field. Approach: Use ferromagnetic cathode and anode that work as bipolar spin-valve injecting both electrons and holes into a deuterated -conjugated polymer. Results and Significance: Successful spin-OLEDs were demonstrated having orange EL that is manipulated by magnetic field. The novel spin-OLED may double the EL intensity of regular OLED, and also control the device color. Top: Schematic of a spin-OLED comprised of LSMO and Co ferromagnet electrodes that inject spin-aligned electrons and holed into a deuterated polymer (DOO-PPV). Bottom: photograph of a working spin-OLED placed between the two poles of an electro-magnet. Principal Investigators: Anil Virkar, Ajay Nahata & Brian Saam NSF DMR 11-21252; www.mrsec.utah.edu

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