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Author(s): Sachchidanand Shukla, Geeta Singh, Laxmi Kant Singh

Email(s): Email ID Not Available

Address: Department of Solid State Physics and Electronics, Avadh Unlversity. Faizabad-224001

Published In:   Volume - 5,      Issue - 1,     Year - 1992


Cite this article:
Shukla, Singh and Singh (1992). Photoluminascence Of Doubly Activated ZnS Phosphors. Journal of Ravishankar University (Part-B: Science), 5(1), pp.177-184.



Journal of  Ravishankar University  Vol. 4-5  No. B (Science)1991-92  pp.177-184  ISSN  0970 5910

Photoluminascence Of  Doubly Activated ZnS Phosphors

Sachchidanand Shukla, Geeta Singh and Laxmi Kant Singh

Department of Solid State Physics and Electronics, Avadh Unlversity.  Faizabad-224001

Ms:  Received 29-2-92; Reveised 8.7.92.

Abstract. The hydrogen  coactivated  ZnS phosphors  with constant  copper concentration and  varying  manganese   concentrations   show  photoluminescence    with colour  varying from  blue-green  to yellow  orange  range  under  excitation  by 3650  AW-radiation. The yellow band associated with Mn-transitions dominates at higher Mn- concentrations while green emission due to copper almost disappears for higher Mn-concentration.The photoluminescent output is studied as a function of temperature.   The samples were also found to exhibit photoconductivity. The presence of coactivators like chlorine and hydrogen has been observed as pre-requisites for photoconductive and photoiuminesence.

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