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US 5,670,248 AGranted
Material consisting of chemical compounds, comprising a metal from group IV A of the periodic system, nitrogen and oxygen, and process for its preparation
OwnerMiladin P. Lazarov, Isabella V. Mayerinventors
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Abstract
The invention concerns a material containing chemical compounds between a metal from group IV A of the periodic system, nitrogen and oxygen. The optical and electrical properties of this material can be set within wide limits by means of small voids, without the need to alter the chemical composition. The material is suitable in particular for use as a selective radiation converter in the solar energy and power industry. Aside from other processes for its manufacture, it can be produced as a thin coating deposited on a substrate by means of reactive evaporation.
Claims11
A composition comprising:
- a metal, M, from group IV of the periodic chart, nitrogen and oxygen, having a formula of MN.sub.x O.sub.y wherein .sub.x and .sub.y each range from about 0.1 to about 1.7 and wherein about 2 to 45% of the volume of the composition is formed by voids having a total magnitude ranging from about (0.5 nm).sup.3 to about (100 nm).sup.3, said composition having a specific resistance ranging from about 30 .mu..OMEGA.cm to about 30,000 .mu..OMEGA.cm.
Dependencies are inferred from the claim text.