Photoluminescent and decay behaviors of Mn^2+ and Ce^3+ coactivated MgSiN_2 phosphors for use in light-emitting-diode applications

Abstract

We examined the photoluminescent behaviors of MgSiN2:Mn2+ and MgSiN2:Ce3+,Mn2+ phosphors for use in white-light-emitting diodes. The red emission from MgSiN2:Mn2+ phosphors consisted of two Gaussian components, P1 from a single Mn2+ ion and P2 from either Mn2+ pairs or clusters. Decay analysis based on the Yokota and Tanimoto equation identified long decay for P1 and fast decay for P2. Most importantly, Ce3+ codoping enhanced Mn2+ emission intensity; in particular, emission at 460 nm excitations was promoted by the Ce3+ codoping.

Ammonothermal Synthesis and Optical Properties of Ternary Nitride Semiconductors Mg‐IV‐N2, Mn‐IV‐N2 and Li‐IV2‐N3 (IV=Si, Ge)

“…[1,2] In recent decades, al arge number of new ternary nitrides were discovered, with many of them recently gaining increasing attention due to their promising optical and electronic properties. [7][8][9][10] On the other hand, further II-IV-N 2 compounds as well as wurtzite-related I-IV 2 -N 3 nitrides have scarcely been investigated with regard to their optical and electronic properties so far.P reviouse xperimental studies are mainly limited to the photoluminescence and ion conductivity of LiSi 2 N 3 ,m agnetic and optical properties of MnSiN 2 as well as the formation and opticalt uning of Mg x Mn 1Àx SiN 2 solid solutions. Furthermore, implied ternary nitrides are generally composed of earth-abundant elements, whereas metals like gallium or indium are becoming increasingly scarce.…”

Ca5La5(SiO4)3(PO4)3O2:Ce3+,Mn2+: A Color-Tunable Phosphor with Efficient Energy Transfer for White-Light-Emitting Diodes

“…There have been several combinations of phosphors and LEDs to fabricate white LEDs, namely (a) a blue InGaN LED chip and a Y 3 Al 5 O 12 :Ce 3þ (YAG:Ce) phosphor, 1 (b) a UV LED chip and two, three, even four phosphors, [2][3][4] and (c) a UV LED chip in combination with a single-composition white-lightemitting phosphor. [10][11][12][13] As is well known, the Ce 3þ ion with the 4f configuration in solids shows efficient broad band luminescence due to the 4f-5d parity allowed electric dipole transition. However, this method faces serious problems of poor color rendition due to lacks of a red-emitting component, thermal quenching and narrow visible range.…”

Photoluminescence properties of (Ce3+, Mn2+)-codoped CaCO3 red phosphor

“…11,18 In addition to the previous results, Mn 2þ pairing or clustering can also contribute to the red shift. [19][20][21][22][23][24][25][26][27][28] Moreover, Ye et al 29 reported a red shift from Mn 2þ ions occupying different sites in the BaMg 2 Si 2 O 7 lattice. On the contrary, Zhang et al 30 observed a blue shift of the Mn 2þ emission band in Mn-doped Ba 2 ZnS 3 .…”