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

*Corresponding author for this work

Research output: Contribution to journalArticle

15 Scopus citations

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
StatePublished - 1 Apr 2011

Keywords

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

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    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