Polymer infrared proximity sensor array

En Chen Chen, Cheng Yang Shih, Ming Zhi Dai, Han Cheng Yeh, Yu Chiang Chao, Hsin Fei Meng, Hsiao Wen Zan, Wei Ren Liu, Yi Chen Chiu, Yao Tsung Yeh, Chien Jen Sun, Sheng Fu Horng, Chain Shu Hsu

    Research output: Contribution to journalArticlepeer-review

    19 Citations (Scopus)

    Abstract

    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 μm. 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.

    Original languageEnglish
    Article number5723003
    Pages (from-to)1215-1220
    Number of pages6
    JournalIEEE Transactions on Electron Devices
    Volume58
    Issue number4
    DOIs
    Publication statusPublished - 2011 Apr 1

    Keywords

    • Array
    • photodetector (PD)
    • polymer
    • proximity sensor

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Electrical and Electronic Engineering

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