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 journalArticle

15 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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  • Cite this

    Chen, E. C., Shih, C. Y., Dai, M. Z., Yeh, H. C., Chao, Y. C., Meng, H. F., Zan, H. W., Liu, W. R., Chiu, Y. C., Yeh, Y. T., Sun, C. J., Horng, S. F., & Hsu, C. S. (2011). Polymer infrared proximity sensor array. IEEE Transactions on Electron Devices, 58(4), 1215-1220. [5723003]. https://doi.org/10.1109/TED.2011.2107517