PHOSPHOR, MANUFACTURING METHOD THEREOF, AND LIGHT-EMITTING DEVICE USING THE PHOSPHOR

摘要

To provide a red-light emitting phosphor having high luminous efficacy, also a light-emitting device, and further a manufacturing method of the phosphor.;Disclosed is a red-light emitting phosphor having a basic composition represented by Ka(Si1-x,Mnx)Fb and also having a particular Raman spectrum. In the spectrum, the intensity ratio of the peak in a Raman shift of 600±10 cm−1 assigned to Mn—F bonds in the crystal to that in a Raman shift of 650±10 cm−1 assigned to Si—F bonds in the crystal is 0.09 to 0.22. This phosphor can be produced by bringing a silicon source in contact with a reaction solution containing potassium permanganate and hydrogen fluoride in such amounts that the molar ratio of hydrogen fluoride to potassium permanganate is 87 to 127.

主权项

1. A phosphor represented by the following formula (A):
Ka(Si1-x,Mnx)Fb  (A)in which a, b and x are numbers satisfying the conditions of 1.5≦a≦2.5, 5.5≦b≦6.5, and 0