@inproceedings{7e7de80ce5004a69b34b61c374844a8c,
title = "X-ray imaging sensor arrays on foil using solution processed organic photodiodes and organic transistors",
abstract = "We demonstrate organic imaging sensor arrays fabricated on flexible plastic foil with the solution processing route for both photodiodes and thin film transistors. We used the photovoltaic P3HT:PCBM blend for fabricating the photodiodes using spin coating and pentacene as semiconductor material for the TFTs. Photodiodes fabricated with P3HT:PCBM absorb in the green part of the visible spectrum which matches with the typical scintillator output wavelength. The arrays consist of 32x32 pixels with variation in pixel resolution of 200μmx200μm, 300μmx300μm and of 1mmx1mm. The accurate reproducibility of shadow images of the objects demonstrates the potential of these arrays for imaging purposes. We also demonstrate that the crosstalk is relatively insignificant despite the fact that the active photodiode forms a continuous layer in the array. Since both photodiodes and TFTs are made of organic material, they are processed at low temperatures below 150°C on foil which means that these imaging sensors can be flexible, light weight and low cost when compared to conventional amorphous silicon based imaging sensors on rigid substrates. In combination with a scintillator on top of the arrays, we show the potential of these arrays for the X-ray imaging applications. ",
keywords = "crosstalk, flexible imaging sensor, organic photodiode, organic thin-film transistors, X-ray imaging sensor",
author = "A. Kumar and D. Moet and {van der Steen}, J.L. and A. Tripathi and F.G. Rodriguez and J. Maas and M. Simon and W. Reutten and A. Douglas and R. Raaijmakers and P.E. Malinowski and K. Myny and U. Shafique and R. Andriessen and P. Heremans and G. Gelinck",
year = "2014",
doi = "10.1117/12.2051224",
language = "English",
isbn = "978-1-6284-1085-3",
series = "Proceedings of SPIE",
publisher = "SPIE",
booktitle = "Organic photonics VI",
address = "United States",
note = "Organic photonics VI ; Conference date: 15-04-2014 Through 16-04-2014",
}