Kuraray Co., Ltd.

Hiroshima University

Yutaka Kaihatsu

Hideharu Iwasaki

Kikuo Okuyama

Jun Takai

Ferry Iskandar

The present invention provides an Al&#x2014;C&#x2014;O based phosphor using neither heavy metal nor rare metal and composed of elements with high environmental compatibility and excellent economic efficiency, wherein the wavelength of the peak intensity of the emission spectrum can be changed without changing the basic composition. An aluminum oxide phosphor which comprises aluminum (Al), carbon (C), and oxygen (O) respectively in an amount of 30 mol %&#x3c;Al&#x3c;60 mol %, 0 mol %&#x3c;C&#x3c;10 mol %, 30 mol %&#x3c;O&#x3c;70 mol % is provided. The above problem is solved in the production of an Al&#x2014;C&#x2014;O phosphor comprising aluminum (Al), carbon (C), and oxygen (O) by heating and firing a mixture comprising an aluminum-containing compound and a coordinatable oxygen-containing compound.

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Higashihiroshima, Japan

Yutaka Kaihatsu