Abstract
In this Letter, we study diffuse reflectance and photoluminescence spectra for fully coordinated green-emitting and partially coordinated red in , as a function of and contents in the raw material. Our results indicate that the presence of can enhance solubility in the form of red centers in CSS. At low concentration, green forms preferentially while red hardly forms even if content in the raw material is sufficient. There exists a threshold concentration of green ; only beyond that can color tunable luminescence with enriched red emission be achieved. Energy transfer from green to red is also studied, as only the green is excited by blue light.
© 2013 Optical Society of America
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