Polymer Infrared Proximity Sensor Array

A near-infrared proximity sensor array is achieved by integrating a polymer light-emitting diode and a polymer photodetector (PD). A green emission is converted into deep red peaked at 670 nm by the inorganic phosphor Intematix R670 with quantum efficiency of over 20%. A bandpass filter is used to s...

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Bibliographic Details
Published in:IEEE transactions on electron devices 2011-04, Vol.58 (4), p.1215-1220
Main Authors: CHEN, En-Chen, SHIH, Cheng-Yang, SUN, Chien-Jen, HOMG, Sheng-Fu, HSU, Chain-Shu, DAI, Ming-Zhi, YEH, Han-Cheng, CHAO, Yu-Chiang, MENG, Hsin-Fei, ZAN, Hsiao-Wen, LIU, Wei-Ren, CHIU, Yi-Chen, YEH, Yao-Tsung
Format: Article
Language:English
Subjects:
Applied sciences
Array
Arrays
Bolometer
infrared, submillimeter wave, microwave and radiowave receivers and detectors
Circuit properties
Devices
Display
Electric, optical and optoelectronic circuits
Electronic circuits
Electronics
Exact sciences and technology
Frequency filters
Infrared
Infrared, submillimeter wave, microwave and radiowave instruments, equipment and techniques
Instruments, apparatus, components and techniques common to several branches of physics and astronomy
Optoelectronic devices
Phosphors
Photoconductivity
photodetector (PD)
Physics
polymer
Polymers
Proximity
proximity sensor
Quantum efficiency
Real time systems
Robot sensing systems
Semiconductor electronics. Microelectronics. Optoelectronics. Solid state devices
Sensor arrays
Thick films
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Description
Summary:A near-infrared proximity sensor array is achieved by integrating a polymer light-emitting diode and a polymer photodetector (PD). A green emission is converted into deep red peaked at 670 nm by the inorganic phosphor Intematix R670 with quantum efficiency of over 20%. A bandpass filter is used to select a spectral tail of phosphor luminescence with a wavelength above 700 nm. The emissive polymer is green polyfluorene. The infrared PD contains a thick film of a blend of poly(3-hexylthiophene) and (6,6)-phenyl-C61-butyric acid methyl ester up to a thickness of 8 m. Position of a moving object at a distance of 10 cm is detected in real time by the array with dynamic images displayed on the computer screen.
ISSN:0018-9383
1557-9646
DOI:10.1109/TED.2011.2107517