Simulations of Passive Matrix Polymer Image Sensors


Two-dimensional passive photodiode matrices are hardly useful for image sensing due to the crosstalk between pixels. This crosstalk makes it difficult to recover information from individual pixels. A switching unit attached to each sensing unit has been the common solution in image sensors (such as in CMOS sensors and in TFT-PiN a-Si photosensors). A novel organic photodiode with voltage-switchable photosensitivity was developed recently. Passive photodiode matrices made with such organic photodiodes can be used for image sensing applications. This circuit simulation study demonstrates an effective scheme to extract images from passive photodiode matrices, concluding that individual photodiode parameters determine the contrast and resolution of N by M image sensors.

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  1. 1.

    C. W. Tang and S. A. VanSlyke, Appl. Phys. Lett. 51, p.913–915 (1987).

    CAS  Article  Google Scholar 

  2. 2.

    J. H. Burroughes, D. D. C. Bradley, A. R. Brown, R. N. Marks, K. Mackay, R. H. Friend, P. L. Burns, and A. B. Holmes, Nature 347, p.539–541 (1990); R. H. Friend, R. W. Gymer, A. B. Holmes, J. H. Burroughes, R. N. Marks, C. Taliani, D. D. C. Bradley, D. A. Dos Santos, J. L. Brédas, M. Lögdlund & W. R. Salaneck et al, Nature 397, p. 121-128 (1999).

    CAS  Article  Google Scholar 

  3. 3.

    D. Braun and A. J. Heeger, Appl. Phys. Lett. 58, p.1982–1984 (1991); G. Gustafsson, Y. Cao, G. M. Treacy, F. Klavetter, N. Colaneri, and A. J. Heeger, Nature 357, p. 477-479 (1992); Y. Yang, MRS Bulletin 22, p. 31-38 (1997).

    CAS  Article  Google Scholar 

  4. 4.

    G. Yu, G. Srdanov, J. Wang and A. J. Heeger, Presentation B 12. 1, Spring Meeting of Materials Research Society, San Francisco, April 5 - 9 (1999).

  5. 5.

    G. Yu and Y. Cao, US Provisional Patent Application: 60/055/840 (Aug. 15, 1997).

  6. 6.

    G. Yu, J. Wang, J. McElvain, and A. J. Heeger, Adv. Mater. 10 #17, p.1431 (1998).

    CAS  Article  Google Scholar 

  7. 7.

    N.S. Sariciftci, L. Smilowitz, A.J. Heeger and F. Wudl, Science 258, p.1474 (1992); N.S. Sariciftci and A.J. Heeger, US Patent 5, 333, 183 (July 19, 1994); N.S. Sariciftci and A.J. Heeger, US Patent 5, 454, 880 (Oct 3, 1995).

    CAS  Article  Google Scholar 

  8. 8.

    G. Yu, K. Pakbaz, and A.J. Heeger, Appl. Phys. Letters 64, p.3422 (1994); G. Yu, J. Gao, J.C. Hummelen, F. Wudl and A.J. Heeger, Science 270, p. 1789 (1995); G. Yu and A.J. Heeger, J. Appl. Phys. 78, p. 4510 (1995).

    CAS  Article  Google Scholar 

  9. 9.

    J.J.M. Halls, C.A. Walsh, N.C. Greenham, E.A. Marseglia, R.H. Friend, S.C. Moratti and A.B. Holmes, Nature 376, p.498 (1995).

    CAS  Article  Google Scholar 

  10. 10.

    D. Braun, Synth. Met. 92, p.107–113 (1998).

    CAS  Article  Google Scholar 

  11. 11.

    D. Braun, J. Rowe, and G. Yu, Proceedings of the 1998 International Conference on the Science and Technology of Synthetic Metals, Montpellier, Aug. 12-19, 1998, Synth. Met. in press (1999).

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Braun, D., Yu, G. Simulations of Passive Matrix Polymer Image Sensors. MRS Online Proceedings Library 558, 339–344 (1999).

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