268
S. G. Nedilko
Fig. 15.11 The PL spectra of
starting cellulose MCC (1),
MCC heated to T = 130 ◦ C
(2), and composites:
10-La 0.7 Sm 0.3 VO 4 (3),
100-La 0.7 Sm 0.3 VO 4 (4),
10-La 0.7 Eu 0.3 VO 4 (5), and
10-K 2 Eu(PO 4 )(MoO 4 ) (6);
λ ex = 405 nm; T = 300 K
500
600
700
0
2
4
6
8
10
6
5
4
3
2
PL intensity [arb.u.]
l [nm]
1
Fig. 15.12 The PL excitation
spectra of the MCC (1, 2) and
composites:
100-La 0.7 Sm 0.3 VO 4 (3),
1-La 0.7 Eu 0.3 VO 4 (4), and
10-K 2 Eu(PO 4 )(MoO 4 ) (5);
λ reg = 460 (2, 3), 475 (4),
580 (1), 612.5 (7), 613.3 (6),
and 644.6 nm (5); T = 300 K
300
400
500
0
2
4
6
4
3
2
PL intensity [arb.u.]
l [nm]
x5
1