SU611451A1 - Magnesium oxide-base luminophor - Google Patents
Magnesium oxide-base luminophorInfo
- Publication number
- SU611451A1 SU611451A1 SU752155739A SU2155739A SU611451A1 SU 611451 A1 SU611451 A1 SU 611451A1 SU 752155739 A SU752155739 A SU 752155739A SU 2155739 A SU2155739 A SU 2155739A SU 611451 A1 SU611451 A1 SU 611451A1
- Authority
- SU
- USSR - Soviet Union
- Prior art keywords
- magnesium oxide
- luminophor
- base
- lithium
- phosphor
- Prior art date
Links
Landscapes
- Luminescent Compositions (AREA)
Description
(54) ЛЮМИНОФОР НА ОСНОВЕ ОКИСИ МАГНИЯ(54) LUMINOFOR BASED ON MAGNESIUM OXIDE
На (г 1 показан спектр излучени мон крй&талла -Ькиси маши , активированно (спектр -получен при во ждаЯМ 51нЙ11Йн ора электронами с ЭнертШ 25-кэ& при плотности тока по-р дка 1 мкА/см); на фиг. 2 - спектр излучени керамического образца люминофора, содержащего 0,3 вес. % фтор,ида лити , полученный при тех услови х возбуждени .(G 1 shows the emission spectrum of a moncrype & thall-xyxine machine, activated (the spectrum is obtained by electrons with electrons with energies of 25 kecs and at a current density of about 1 µA / cm); Fig. 2 shows the emission spectrum a ceramic phosphor sample containing 0.3 wt.% fluorine, lithium, prepared under those excitation conditions.
Как видно из фиг. 1, в спектре катоделюминесценции люминофора при температуре 85° К доминирует полоса излучени с максимумом при 5,85 эВ (крива 1). Слабое излучение наблюдаетс также в более коротковолновой области спектра. При повышении температуры до 300° К интенсивность излучени в области 5,8 эВ уменьшаетс , а в области 7-7,4 эВ увеличиваетс (крива 2). Крива 3 соответствует спектру излучени при 85° К, крива 4 - при 300° К. Как видно из фиг. 2, уменьшение интеисивности излучени у керамического образца MgO LiF с повышением температуры про вл етс слабее, чем у монокристалла MgO . Na. i Указанные концентрации активатора и коактиватора в люминофоре вл ютс оптимальными . Уменьшение их концентрации вызывает снижение эффективности свечени люминофора из-за уменьшени количества центров свечени , увеличение сверх за вленного предела приводит к выделению второй фазы и также к снижению эффективности свечени люминофора.As can be seen from FIG. 1, in the cathodeluminescence spectrum of the phosphor at a temperature of 85 ° K, the emission band dominates with a maximum at 5.85 eV (curve 1). Weak radiation is also observed in the shorter wavelength region of the spectrum. As the temperature rises to 300 ° K, the radiation intensity in the region of 5.8 eV decreases, and in the region of 7-7.4 eV increases (curve 2). Curve 3 corresponds to the emission spectrum at 85 ° K, curve 4 at 300 ° K. As can be seen from FIG. 2, the decrease in radiation intrinsicity with a MgO LiF ceramic sample with increasing temperature is less pronounced than with a MgO single crystal. Na. i The indicated concentrations of activator and coactivator in the phosphor are optimal. A decrease in their concentration causes a decrease in the luminescence efficiency of the phosphor due to a decrease in the number of luminescence centers, an increase beyond the stated limit leads to the separation of the second phase and also to a decrease in the efficiency of luminescence of the phosphor.
Claims (2)
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU752155739A SU611451A1 (en) | 1975-07-10 | 1975-07-10 | Magnesium oxide-base luminophor |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
SU752155739A SU611451A1 (en) | 1975-07-10 | 1975-07-10 | Magnesium oxide-base luminophor |
Publications (1)
Publication Number | Publication Date |
---|---|
SU611451A1 true SU611451A1 (en) | 1979-02-28 |
Family
ID=20626451
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
SU752155739A SU611451A1 (en) | 1975-07-10 | 1975-07-10 | Magnesium oxide-base luminophor |
Country Status (1)
Country | Link |
---|---|
SU (1) | SU611451A1 (en) |
-
1975
- 1975-07-10 SU SU752155739A patent/SU611451A1/en active
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