The Multiple Emission Bands in Zinc Cadmium Sulfide Phosphors

Edith B. Fehr; A. I. Friedman; F. J. Studer; G. R. Fonda

doi:10.1364/JOSA.42.000917

Journal of the Optical Society of America
Vol. 42,
Issue 12,
pp. 917-922
(1952)
•https://doi.org/10.1364/JOSA.42.000917

The Multiple Emission Bands in Zinc Cadmium Sulfide Phosphors

Edith B. Fehr, A. I. Friedman, F. J. Studer, and G. R. Fonda

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Edith B. Fehr, A. I. Friedman, F. J. Studer, and G. R. Fonda, "The Multiple Emission Bands in Zinc Cadmium Sulfide Phosphors," J. Opt. Soc. Am. 42, 917-922 (1952)

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Abstract

Unexpected emission bands have been observed for ZnCdS: Ag high in cadmium. With high Ag, the main emission band under cathode-ray excitation at 10 kv appeared to be shifted to shorter wavelength on increase in current density. Under ultraviolet excitation at −196°C, the apparent shift was resolved into two emission bands, one of which corresponded to the new band that appeared under cathode rays; the other, to the normal band of the unactivated phosphor. With low Ag, edge emission bands appeared under high current density cathode rays and sodium bands under ultraviolet at −196°C.

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Percent ZnS	Percent CdS	NaCl	Percent Fluxes		Firing Temp	Crystal Structure
Percent ZnS	Percent CdS	NaCl	MgCl₂ 6H₂O	(NH₄)₂HPO₄	Firing Temp	Crystal Structure
100	0	2	2	1	1000°C	Cubic
100	0	2	2	1	1100	Hexagonal
75	25	2	2		950	Hexagonal
45	55	2	2		850	Hexagonal
15	85	1	1		700	Hexagonal
0	100	1	1		700	Hexagonal

Percent CdS	Percent Ag	Resonance band	Sodium band	Activator bands at −196°C		at 25°C
Percent CdS	Percent Ag	Resonance band	Sodium band	Ag	Zn	at 25°C
0 (Cub)	nil		3900–12		4700–100	4600
	0.0001		3900–11		4700–100	4550
	0.001		3900– 9	4650–100		4520
	0.01		3900– 5	4540–100		4530
	0.10		3900– 5	4460–100		4460
0 (Hex)	nil		3900–20		4550–100	4520
	0.0001		3900–23		4550–100	4550
	0.001		3900–15	4500–100		4460
	0.01		3900– 6	4420–100		4440
	0.10		3900– 2	4420–100		4440
25	nil		4400–46		5120–99	5120
	0.0001		4400–43		5160–94	5060
	0.001		4400–36	5040–100		5000
	0.01		4400–34	5100–100		5050
	0.10		4400–35	4940–123		5000
55	nil	4300–10	4900–57		6100–100	6050
	0.0001	4300–13	4900–42		6000–100	5860
	0.001	4300– 2	4900–13	5780–100		5720
	0.01	4300– 0	4900– 9	5760–100		5740
	0.10	4300– 0	4900–31	5750–100		5740
85	nil	4860–84	5600–48	5860– 0	6900–100	6850
	0.0001	4860–32	5600–23	5860– 0	6900–100	6750
	0.001	4860– 2	5600– 8	5860–11	6900–100	6750
	0.01	4860– 0	5600– 0	5860–40	6900–100	6720
	0.10	4860– 0	5600– 0	5860–96	6900– 76	6700
100	nil	5250–19	5900– 7	6250– 0	7000+−100	7000 +
	0.0001	5250–12	5900− 6	6250− 0	7000+−100	7000 +
	0.001	5250– 0	5900– 2	6250– 22	7000+−100	7000 +
	0.01	5250– 0	5900– 0	6250–100	7000+− 40	7000 +
	0.10	5250– 0	5900– 0	6250–100	7000+− 5	7000 +

CdS	Structure	Ag	Band	A	Wavelength
CdS	Structure	Ag	Band	A	cm⁻¹	Difference-cm⁻¹
0	Cubic	nil	Zn	4700	21250
0	Cubic	0.10	Ag	4460	22410	1160
0	Hexagonal	nil	Zn	4550	22000
0	Hexagonal	0.10	Ag	4420	22620	620
25	Hexagonal	nil	Zn	5120	19520
25	Hexagonal	0.10	Ag	4940	20220	700
55	Hexagonal	nil	Zn	6100	16400
55	Hexagonal	0.10	Ag	5750	17410	1010
85	Hexagonal	nil	Zn	6900	14500
85	Hexagonal	0.10	Ag	5860	17080	2580

Percent ZnS	Percent CdS	NaCl	Percent Fluxes		Firing Temp	Crystal Structure
Percent ZnS	Percent CdS	NaCl	MgCl₂ 6H₂O	(NH₄)₂HPO₄	Firing Temp	Crystal Structure
100	0	2	2	1	1000°C	Cubic
100	0	2	2	1	1100	Hexagonal
75	25	2	2		950	Hexagonal
45	55	2	2		850	Hexagonal
15	85	1	1		700	Hexagonal
0	100	1	1		700	Hexagonal

Percent CdS	Percent Ag	Resonance band	Sodium band	Activator bands at −196°C		at 25°C
Percent CdS	Percent Ag	Resonance band	Sodium band	Ag	Zn	at 25°C
0 (Cub)	nil		3900–12		4700–100	4600
	0.0001		3900–11		4700–100	4550
	0.001		3900– 9	4650–100		4520
	0.01		3900– 5	4540–100		4530
	0.10		3900– 5	4460–100		4460
0 (Hex)	nil		3900–20		4550–100	4520
	0.0001		3900–23		4550–100	4550
	0.001		3900–15	4500–100		4460
	0.01		3900– 6	4420–100		4440
	0.10		3900– 2	4420–100		4440
25	nil		4400–46		5120–99	5120
	0.0001		4400–43		5160–94	5060
	0.001		4400–36	5040–100		5000
	0.01		4400–34	5100–100		5050
	0.10		4400–35	4940–123		5000
55	nil	4300–10	4900–57		6100–100	6050
	0.0001	4300–13	4900–42		6000–100	5860
	0.001	4300– 2	4900–13	5780–100		5720
	0.01	4300– 0	4900– 9	5760–100		5740
	0.10	4300– 0	4900–31	5750–100		5740
85	nil	4860–84	5600–48	5860– 0	6900–100	6850
	0.0001	4860–32	5600–23	5860– 0	6900–100	6750
	0.001	4860– 2	5600– 8	5860–11	6900–100	6750
	0.01	4860– 0	5600– 0	5860–40	6900–100	6720
	0.10	4860– 0	5600– 0	5860–96	6900– 76	6700
100	nil	5250–19	5900– 7	6250– 0	7000+−100	7000 +
	0.0001	5250–12	5900− 6	6250− 0	7000+−100	7000 +
	0.001	5250– 0	5900– 2	6250– 22	7000+−100	7000 +
	0.01	5250– 0	5900– 0	6250–100	7000+− 40	7000 +
	0.10	5250– 0	5900– 0	6250–100	7000+− 5	7000 +

Abstract

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Tables (3)

Equations (1)

Journal of the Optical Society of America