Wednesday, January 23, 2013

TUM Shows Organic Film on Silicon Sensor

Prof. Paolo Lugli and Dr. Daniela Baierl from Technische Universität München (TUM) announced an image sensor based on a photosensitive polymer layer sprayed on top on the silicon ROIC. Another advantage of the plastic sensors is that different chemical compounds can be used to capture different parts of the light spectrum. For example, the PCBM and P3HT polymers are ideal for the detection of visible light. Other organic compounds, like squaraine dyes, are sensitive to light in the near-infrared region. Details are published in a paper in Nature journal:

Daniela Baierl, Lucio Pancheri, Morten Schmidt, David Stoppa, Gian-Franco Dalla Betta, Giuseppe Scarpa, Paolo Lugli, A hybrid CMOS-imager with a solution-processable polymer as photoactive layer, Nature Communications, Nov 2012.

Organic Film Sensor
TUM Sensor QE
Influence of silicon photogeneration in a PCBM:P3HT
detector. Images, showing a horse, acquired by the
hybrid CMOS-detector with a P3HT:PCBM bulk heterojunction.
The left one is acquired by illumination with green light
(535 nm), the other with a NIR-LED at 850 nm.

1 comment:

  1. While the results thus far are not so great, I thought this was a good paper to read. It is nice to see noise and related metrics addressed by someone who understands image sensors.


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