WHITE-LIGHT EMITTING DEVICE, AND PHOSPHOR AND METHOD OF ITS MANUFACTURE

摘要

White-light emitting device that excels in emission efficiency and temperature stability and that can put out white light of a color temperatur e of choice is afforded by utilizing phosphors of superior temperature characteristics and high light-emitting efficiency; the phosphors and a method of manufacturing the phosphors are also made available. An LED (1), and a phosphor (3) ZnS x Se1-x(0 < x < 1) that contains at least one activat or among Cu, Ag and Au and that, excited by light irradiated from the LED, produces lig ht are furnished.