17 September 2015 Non-volatile resistive photo-switches for flexible image detector arrays
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Abstract
The increasing quest to find lightweight, conformable or flexible image detectors for machine vision or medical imaging brings organic electronics into the spotlight for these fields of application. Here were we introduce a unique imaging device concept and its utilization in an organic, flexible detector array with simple passive matrix wiring. We present a flexible organic image detector array built up from non-volatile resistive multi-bit photo-switchable elements. This unique realization is based on an organic photodiode combined with an organic resistive memory device wired in a simple crossbar configuration. The presented concept exhibits significant advantages compared to present organic and inorganic detector array technologies, facilitating the detection and simultaneous storage of the image information in one detector pixel, yet also allowing for simple read-out of the information from a simple passive-matrix crossbar wiring. This concept is demonstrated for single photo-switchable pixels as well as for arrays with sizes up to 32 by 32 pixels (1024 bit). The presented results pave the way for a versatile flexible and easy-to-fabricate sensor array technology. In a final step, the concept was expanded to detection of x-rays.
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Sebastian Nau, Sebastian Nau, Christoph Wolf, Christoph Wolf, Stefan Sax, Stefan Sax, Emil J. W. List-Kratochvil, Emil J. W. List-Kratochvil, } "Non-volatile resistive photo-switches for flexible image detector arrays", Proc. SPIE 9569, Printed Memory and Circuits, 956908 (17 September 2015); doi: 10.1117/12.2187007; https://doi.org/10.1117/12.2187007
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