Open AccessTHE EFFECT OF Er3+ CONCENTRATION ON ALTERNATING CURRENT ELECTROLUMINESCENCE CHARACTERISTICS OF ZnS:ErF, THIN FILMS
Author(s) -
Meng Li,
Changhua Li,
Zhong Guan
Publication year - 1988
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.37.1619
Subject(s) - materials science , thin film , ion , relaxation (psychology) , electroluminescence , analytical chemistry (journal) , current (fluid) , voltage , nanotechnology , thermodynamics , electrical engineering , chemistry , physics , layer (electronics) , chromatography , psychology , social psychology , organic chemistry , engineering
In this paper, we have studied the effect of Er3+ concentration ACEL characteristics of ZnS:ErF3 thin films. It is shown that I(4F9/2→4I15/2) increase with increasing Er3+ concentration. By studying the EL decay, the ratio of green to red emission vs applied voltage and EL efficiencies of 4F9/2 and 2H11/2+ 4S3/2 energy levels of ZnS:ErF3 thin films with different Er3+ concentration, we find that the increase of I(4F9/2→4I15/2) is due to the cross-relaxation processes occurred between Er3+ ions. The cross-relaxation rate increase with increasing Er3+ concentration, and results in the increase of I(4F9/2→4I15/2).