EXCIMER LAMP

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The present invention provides an excimer lamp which can provide high illumination with high illumination stability when the gas of sulfur hexafluoride, carbon tetrafluoride or nitrogen trifluoride with stable chemical property is used. The excimer lamp is enveloped with noble gas and fluoride. The external surface of light emitting diode is at least configured with one electrode (10, 11). The invention is characterized in that the gross pressure of gas in the light emitting diode (2) is larger than 13.3kPa. The fluoride is one object selected from sulfur hexafluoride, carbon tetrafluoride and nitrogen trifluoride. The molar ratio of fluoride relatively to the gross gas is 0.001%-10%. The noble gas is composed of a random gas and helium and/or neon, wherein the random gas is selected fromargon, krypton and xenon. The molar ratio of helium and/or neon relatively to the whole mixture of noble gas is 90%-99.5%.