A Monolithically Processed Rectifying Pixel for High‐Resolution Organic Imagers
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- Peter Zalar
- Department of Electrical Engineering University of Tokyo 7‐3‐1 Hongo Bunkyo‐ku Tokyo 113‐8656 Japan
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- Naoji Matsuhisa
- Department of Electrical Engineering University of Tokyo 7‐3‐1 Hongo Bunkyo‐ku Tokyo 113‐8656 Japan
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- Toshiki Suzuki
- Department of Electrical Engineering University of Tokyo 7‐3‐1 Hongo Bunkyo‐ku Tokyo 113‐8656 Japan
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- Shintaro Enomoto
- Department of Electrical Engineering University of Tokyo 7‐3‐1 Hongo Bunkyo‐ku Tokyo 113‐8656 Japan
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- Mari Koizumi
- Department of Electrical Engineering University of Tokyo 7‐3‐1 Hongo Bunkyo‐ku Tokyo 113‐8656 Japan
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- Tomoyuki Yokota
- Department of Electrical Engineering University of Tokyo 7‐3‐1 Hongo Bunkyo‐ku Tokyo 113‐8656 Japan
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- Masaki Sekino
- Department of Electrical Engineering University of Tokyo 7‐3‐1 Hongo Bunkyo‐ku Tokyo 113‐8656 Japan
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- Takao Someya
- Department of Electrical Engineering University of Tokyo 7‐3‐1 Hongo Bunkyo‐ku Tokyo 113‐8656 Japan
説明
<jats:title>Abstract</jats:title><jats:p>Integration of switching elements with sensing elements in a sensor array is a crucial platform for “sensing surfaces”. Of particular interest are imaging surfaces, especially for applications such as X‐ray imaging or fingerprint sensors. Since a photodiode loses its rectifying properties upon illumination, it requires a switching element so that meaningful data can be obtained from each individual pixel. To solve this problem, we have developed a monolithically processed rectifying pixel which enables high resolution organic imaging devices. Our organic imager has pixel pitches as small as 50 µm, with resolutions of up to 262 ppi. The pixel's individual light intensity dependent and spectral response characteristics were characterized as a function of voltage. As a total imaging system, the imageable resolution was also determined. The applicability of the imager was validated by steady state images, but also by real‐time video acquisition and by spatial photoplethysmography (PPG) measurements on the ball of a human foot.</jats:p>
収録刊行物
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- Advanced Electronic Materials
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Advanced Electronic Materials 4 (6), 2018-03-24
Wiley
