HF‐Free Solid‐State Synthesis of the Oxyfluoride Phosphor K 3 MoOF 7 :Mn 4
K 3 MoOF 7 :Mn 4+ was synthesized through a facile two‐step solid‐state synthesis route without using HF. The first step was carried out in copper ampules, which were shut by welding, followed by the second step, a ball milling experiment. The sample was characterized by single‐crystal and powder X‐...
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| Published in | European journal of inorganic chemistry Vol. 2019; no. 29; pp. 3383 - 3388 |
|---|---|
| Main Authors | , , , |
| Format | Journal Article |
| Language | English |
| Published |
07.08.2019
|
| Online Access | Get full text |
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| Summary: | K
3
MoOF
7
:Mn
4+
was synthesized through a facile two‐step solid‐state synthesis route without using HF. The first step was carried out in copper ampules, which were shut by welding, followed by the second step, a ball milling experiment. The sample was characterized by single‐crystal and powder X‐ray diffraction, EDX, and luminescence spectroscopy. K
3
MoOF
7
crystallizes in the triclinic space group
P
1
(no. 2). It features [MoOF
5
]
–
units as a main structural motif. At room temperature, seven emission lines are noticeable. The maximum emission line is located at
λ
max
= 627 nm. CIE1931 coordinates could be determined to 0.690(1) and 0.310(1) for
x
and
y
, respectively. A luminous efficacy of radiation (LER) of 218 lm W
opt
–1
was achieved. Furthermore, temperature dependent luminescence measurements in the range of 25 °C to 100 °C were conducted. |
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| ISSN: | 1434-1948 1099-0682 |
| DOI: | 10.1002/ejic.201900634 |