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Manganese Doped Cd(4)P(2)Cl(3) Phosphor

IP.com Disclosure Number: IPCOM000096309D
Original Publication Date: 1963-Mar-01
Included in the Prior Art Database: 2005-Mar-07
Document File: 1 page(s) / 11K

Publishing Venue

IBM

Related People

Suchow, L: AUTHOR

Abstract

The semiconducting compound Cd(4)P(2)Cl(3) is an orange-emitting phosphor upon excitation by 2537 Angstroms ultraviolet light after it is suitably doped with manganese. The 2537 Angstroms ultraviolet light is the excitation wavelength used in fluorescent lamps. A typical preparation has the formula Cd(3.96)Mn(0.04)P(2)Cl(3), and is prepared by the reaction 4.92 Cd(3)P(2) + 9 Cd Cl(2) + 2.16 P + 0.24 Mn > 6 Cd(3.96)Mn(0.04)P(2)Cl(3).

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Manganese Doped Cd(4)P(2)Cl(3) Phosphor

The semiconducting compound Cd(4)P(2)Cl(3) is an orange-emitting phosphor upon excitation by 2537 Angstroms ultraviolet light after it is suitably doped with manganese. The 2537 Angstroms ultraviolet light is the excitation wavelength used in fluorescent lamps. A typical preparation has the formula Cd(3.96)Mn(0.04)P(2)Cl(3), and is prepared by the reaction 4.92 Cd(3)P(2) + 9 Cd Cl(2) + 2.16 P + 0.24 Mn > 6 Cd(3.96)Mn(0.04)P(2)Cl(3).

This reaction is carried out by heating reactants for approximately 100 hours in an evacuated sealed quartz tube at 500 Degrees C. In one run, the amounts used are 0.328g Cd(3)P(2), 0.274g Cd Cl(2), 0. 0112g P, and 0. 0022 g Mn powder. These are ground together thoroughly prior to firing in the quartz tube.

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