Print Email Facebook Twitter High performance x-ray imaging detectors on foil using solutionprocessed organic photodiodes with extremely low dark leakage current (Presentation Recording) Title High performance x-ray imaging detectors on foil using solutionprocessed organic photodiodes with extremely low dark leakage current (Presentation Recording) Author Kumar, A. Moet, D. van der Steen, J.L. van Breemen, A.J.J.M. Shanmugam, S. Gilot, J. Andriessen, H.A.J.M. Matthias, S. Ruetten, W. Douglas, A. Raaijmakers, R. Malinowski, P.E. Myny, K. Gelinck, G.H. Publication year 2011 Abstract We demonstrate high performance X-ray imaging detectors on foil suitable for medical grade X-ray imaging applications. The detectors are based on solution-processed organic photodiodes forming bulk-heterojunctions from photovoltaic donor and acceptor blend. The organic photodiodes are deposited using an industrially compatible slot die coating technique with end of line processing temperature below 100° C. These photodiodes have extremely low dark leakage current density of 10-7 mA/cm2 at -2V bias with very high yield and have peak absorption around 550 nm wavelength. We combine these organic photodiodes with high mobility metal oxide semiconductor based thin film transistor arrays with high pixel resolution of 200ppi on thin plastic substrate. When combined with a typical CsI(TI) scintillator material on top, they are well suited for low dose X-ray imaging applications. The optical crosstalk is insignificant upto resolution of 200 ppi despite the fact that the photodiode layer is one continuous layer and is non-pixelated. Low processing temperatures are another key advantage since they can be fabricated on plastic substrate. This implies that we can make X-ray detectors on flexible foil. Those detectors can be mechanically more robust and light weight when compared to amorphous Si based detectors fabricated on glass substrate. Subject Mechatronics, Mechanics & MaterialsTFT - Thin Film TechnologyTS - Technical SciencesElectronicsIndustrial InnovationEfficiencyLight ExtractionReflectivityFlexibleLarge AreaOLEDThin film barrier To reference this document use: http://resolver.tudelft.nl/uuid:d7e293fb-5692-4d2f-87a1-df90286edfa7 DOI https://doi.org/10.1117/12.2187041 TNO identifier 533804 Source Proceedings of SPIE, 95670, 12 Article number 95670U Document type conference paper Files To receive the publication files, please send an e-mail request to TNO Library.