-November 2004:

Cover Image APL		 New article "Self-assembled infrared-luminescent Er-Si-O single-crystals on silicon" by H. Isshiki, M.J.A. de Dood, A. Polman, and T. Kimura, Appl. Phys. Lett. 85, 4343 (2004) appears on the cover of APL.

Using an inexpensive wet chemical technique combined with a high temperature treatment, a new type of luminescent material was discovered. This new material contains erbium, silicon and oxygen in a ratio of 1:2:4 (Er:Si:O) and has a well defined crystal structure. The material is interesting for applications becuase it produces light at wavelengths around 1536 nm at room temperature (1536 is the standard wavelength for long distance telecommunication).

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