LED固態照明被認為是下個世代的照明技術，其原因是因為它具備了許多優點，例如：高效率、對環境友善，且使用壽命長，而螢光粉的使用則是LED發光技術中十分關鍵的一環。大部分的螢光粉是由鹼土金屬化合物作為主體晶格，另外混摻稀有元素作為活化離子。本論文所探討的BCNO螢光粉，則是一種不需要稀有元素混摻的螢光粉，並且可以在相對較低的溫度下製備，另外，由於BCNO不需要混摻稀有元素作為活化子，因此它的原料成本也相對一般螢光粉較低。BCNO螢光粉是以BN作為它的主體晶格，碳及氧元素則能幫助BN增強它的強度，並且使其放射波增長(紅位移)。但是當碳元素過量時，碳作為雜質則會降低BN的發光強度並縮短放射波長。在本論文中，BCNO是經由高溫爐，在600-700℃下製備而成。本論文主要在探討製備BCNO的各種變數影響，例如：原料混和方式、硼與碳的添加量等等。在此研究中，BCNO的放射波長可由470nm到540nm，經由波長370nm的UV光激發，由此可見，BCNO作為黃綠色螢光粉，並且無須混摻稀有元素，所以具有取代現有白光LED技術中所使用黃色螢光粉的潛力。

LED solid state lighting has been considered to be the next generation lighting technology due to many advantages such as high energy efficiency, environmental friendliness and long lifetime. Phosphor is a key material in fabrication of LED lighting devices. Most of the phosphors are alkaline earth compounds doped with rare-earth ions as their activators. BCNO is a kind of phosphor which is different from most of other phosphors. It works without rare-earth ions and can be synthesized in low temperature. BCNO thus has advantage that its production does not need rare-earth metal sources and that its production cost can be potentially lower than that of others. BCNO phosphor works with BN as its host lattice. Carbon and oxide will help BN to enhance the intensity and also increase the wavelength. When the amount of carbon too many, the carbon impurity will increase and make the wavelength of the phosphor become lower. Boron carbon oxynitride (BCNO) phosphors were prepared at 650-7000C under atmospheric pressure by using muffle furnace. In this thesis, the experimental parameters such as effect of mixing, boron and carbon effect were investigated. The emission peak can be tuned from 470nm to 540 nm used 370 nm as its lambda excitation. The optimized BCNO phosphors may find potential use in white LED applications.

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