Table 11 CIE coordinate, color purity, and CCT of La2O3:Tm.

From: Energy transfer and multicolour photoluminescence in phosphors La2O3 doped by Tm3⁺, Ho3⁺, and Eu3⁺ for white LED and security applications

La2O3:Tm3+

Sr. No

Name

x

y

xd

yd

CCT (k)

Colour Purity (%)

1

La2O3:Tm3+(0.5 mol%)

0.145

0.041

0.148

0.025

2813.01

96.29

2

La2O3:Tm3+(1.0 mol%)

0.145

0.037

0.145

0.028

1767.06

97.66

3

La2O3:Tm3+(1.5 mol%)

0.143

0.045

0.147

0.027

4589.36

95.94

4

La2O3:Tm3+(2.0 mol%)

0.143

0.046

0.147

0.027

NA

95.68

5

La2O3:Tm3+(2.5 mol%)

0.143

0.048

0.147

0.027

NA

95.17

Back to article page