Table 12 CIE coordinate, color purity, and CCT of La2O3:Tm/Ho at 306 nm.

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

La2O3: Tm3+/Ho3+ at 306 nm

Sr. No

Name

x

y

xd

yd

CCT (k)

Colour Purity (%)

1

La2O3: Tm3+(1.5 mol%)/Ho3+(0.5 mol%)

0.155

0.194

0.106

0.094

13,705,515.21

65.44

2

La2O3: Tm3+(1.5 mol%)/Ho3+(1.0 mol%)

0.155

0.211

0.119

0.068

13,705,515.21

59.82

3

La2O3: Tm3+(1.5 mol%)/Ho3+(1.5 mol%)

0.162

0.227

0.116

0.074

134,129.67

55.69

4

La2O3: Tm3+(1.5 mol%)/Ho3+(2.0 mol%)

0.169

0.255

0.280

0.712

47,359.82

38.73

5

La2O3: Tm3+(1.5 mol%)/Ho3+(2.5 mol%)

0.174

0.279

0.273

0.718

29,707.47

34.95

Back to article page