E366-01 - Forschungsbereich Mikro- und Nanosensorik E384-01 - Forschungsbereich Software-intensive Systems
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Journal:
Organic Electronics
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ISSN:
1566-1199
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Date (published):
2017
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Number of Pages:
8
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Publisher:
ELSEVIER
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Peer reviewed:
Yes
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Keywords:
Electrical and Electronic Engineering; Condensed Matter Physics; Electronic, Optical and Magnetic Materials; General Chemistry; Biomaterials; Materials Chemistry
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Abstract:
We propose a flexible proximity sensor to detect sub-centimeter distance with an ultra-high displacement
resolution. The proximity sensor is realized by integrating a semi-transparent organic photo detector
with a transparent top electrode and a finger-type bottom electrode. By placing the semitransparent
finger-type photodetector on a light source, such as a light-emitting diode (LED), the
photodetector can detect the light reflected from an object on top of the sensor. With the highly compact
structure, the detecting range is from 1 mm to 30 mm. From 1 mm to 10 mm, the sensor is particularly
sensitive and delivers a resolution of 1 mm. The air-stable photodetector can also be fabricated on a
flexible substrate without encapsulation, enabling the integration with arbitrary light sources. After 1000
times bending, the flexible photodetector shows no obvious degradation.
