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

Author:

Pal Apurba1,Roy Jitendra Nath12,Dey Puja12ORCID,Yusuf Seikh Mohammad34

Affiliation:

1. Department of Physics Kazi Nazrul University Asansol 713340 WB India

2. Centre for Organic Spintronics and Optoelectronics Devices Kazi Nazrul University Asansol 713340 WB India

3. Solid State Physics Division Bhabha Atomic Research Centre Mumbai 400085 India

4. Homi Bhabha National Institute Anushaktinagar Mumbai 400094 India

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.

Publisher

Wiley

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