Coexistence of Room Temperature Optical Response and Spin Valve Characteristics in ITO/V[TCNE]₂/Rubrene/Co/Au Magnetic Organic Photodetector Heterostructure

Abstract

This article reports an integration of organic photodetector (OPD) and organic spin valve (SV) in a single physical device — ITO/V[TCNE]2/rubrene/Co/Au magnetic OPD heterostructure. Generation of photocurrent with more than 43.3% photocurrent‐to‐dark current ratio is revealed in this device under illumination of 660 nm red laser light at 0.4 V electrical bias. Moreover, room temperature SV response with up to 7.7% SV magnetoresistance peak is found at 138 Oe in the same heterostructure. Such intriguing coexistence of photocurrent generation and SV effect at room temperature in a single magnetic OPD heterostructure paves the way for the development of eco‐friendly all‐organic next‐generation multifunctional opto‐spintronics devices.