Tailored Microstructures for Infrared Detection


Using the effective medium approximation[1–4] and the theory of photoemission from small particles,[5] we look into the design-rules of infrared materials based upon the metalsemiconductor random heterostructures with Ag particles embedded in the semiconductor. It is found that semiconductor host matrices with higher dielectric constants show better optical absorption in the infrared and that optical properties are closely related to microstructural parameters such as volume fraction of metal particles, percentage of aggregation and particle size. Cu, Ag and Au particles all show similar characteristics. We synthesized materials with small silver particles embedded in Si. Their microstructures are analysized using X-ray diffraction, electron microscopy and sputter Auger profiling. Finally, we present the optical properties of these materials and make comparisons with our theoretical results.

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  1. 1.

    D. Stroud and F. P. Pan, Phys. Rev. B, 17, 1602 (1978).

    CAS  Google Scholar 

  2. 2.

    P. Sheng, Phys. Rev. Lett., 45, 60 (1980).

    CAS  Google Scholar 

  3. 3.

    J. C. Garland and D. B. Tanner(editors), Electrical Transport and Optical Properties of Inhomogeneous Meduia, AIP Conference proceeding, No.40, AIP (1978).

  4. 4.

    N. V. Alexander and C. W. Bates, Jr., Solid State Comm., 51, 331 (1984)

    CAS  Google Scholar 

  5. 5.

    Q. Y. Chen and C. W. Bates Jr., Phys. Rev. Lett. 57 (21), 2737 (1986).

    CAS  Google Scholar 

  6. 6.

    M. Y. Schelv, SPIE, Vol. 348, 75 (1982)

    Google Scholar 

  7. 7.

    H. Beneking, IEEE Trans. Electron. Devices. ED-29, 1431 (1982).

  8. 8.

    W. Roth et al., Electron. Lett., 19, 554 (1983).

    Google Scholar 

  9. 9.

    C. W. Bates, Jr., Phys. Rev. Lett., 47 (3), 204 (1981).

    CAS  Google Scholar 

  10. 10.

    J. C. Hensel, et at., Phys. Rev. Lett. 54 (16), 1840 (1985). U.S. Yamaguchi, Surface Science, 138, 449 (1984).

    Google Scholar 

  11. 12.

    F. Wooten, Optical Properties of Solids, AP, 1972.

  12. 13.

    A. E. Hughes and S. C. Jain, Adv. in Phys., 28 (6), 717 (1979).

    CAS  Google Scholar 

  13. 14.

    M. Arnold, et al., Crystal Res. Technol., 18 (8), 1015 (1983).

    CAS  Google Scholar 

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Correspondence to Quark Y. Chen.

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Chen, Q.Y., Bates, C.W. Tailored Microstructures for Infrared Detection. MRS Online Proceedings Library 90, 171 (1986). https://doi.org/10.1557/PROC-90-171

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