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Science 26 June 1992:
Vol. 256. no. 5065, pp. 1791 - 1792
DOI: 10.1126/science.256.5065.1791
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Articles

Luminescent Color Image Generation on Porous Silicon

Vincent V. Doan 1 and Michael J. Sailor 1

1 Department of Chemistry, University of California, San Diego, La Jolla, CA 92093

Black and white images were projected onto n-type silicon (100) wafers during a photoelectrochemical etch to produce a color image that photoluminesces. The photoluminescence originates from a thin layer of luminescent porous silicon that is produced in the photoetch, and the colors that appear in the etched image arise from thin-film optical interference. A diffraction grating was also photoetched into the substrate, demonstrating simultaneous encoding of a gray-scale image into thin-film interference, luminescence, and diffraction phenomena.

Submitted on March 5, 1992
Accepted on May 8, 1992


THIS ARTICLE HAS BEEN CITED BY OTHER ARTICLES:
A Porous Silicon-Based Optical Interferometric Biosensor.
V. S. Lin, K. Motesharei, K. S. Dancil, M. J. Sailor, and M. R. Ghadiri (1997)
Science 278, 840-843
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Science. ISSN 0036-8075 (print), 1095-9203 (online)