Recordable optical device including a barrier layer

Details Recordable optical device including a barrier layer Recordable optical device including a barrier layer

1997-04-11

1998-12-15

Angebranndt, Martin

Radiation imagery chemistry: process, composition, or product th

Imaging affecting physical property of radiation sensitive...

Radiation sensitive composition or product or process of making

430346, 430945, 369288, G03C 1492

Patent

active

058494588

ABSTRACT:
For an optical recordable disk, a heat conductive gold layer can be deposited on a phase-change recordable layer to increase the writing threshold. This higher threshold improves the data stability during readout. However, it has been found that there is substantial inter-diffusion between the phase-change layer and the gold layer. The performance is degraded as a result. A barrier layer between the phase-change layer and the gold layer can effectively prevent diffusion and mixing. Using his barrier, the performance is preserved and the data stability is improved.

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