Browsing by Author "Shih, Cheng-Yang"

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Polymer Infrared Proximity Sensor Array
(2011-04-01)
Chen, En-Chen
;
Shih, Cheng-Yang
;
Dai, Ming-Zhi
;
Yeh, Han-Cheng
;
Chao, Yu-Chiang
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 mu 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.