Abstract

SrS:Cu films were prepared by an electron beam deposition method to improve the emission properties of blue EL elements. SrS:Cu pellets were used as an evaporant of SrS:Cu films. The correlation between pellet-sintering condition and crystallinity of SrS:Cu films was investigated. As a result, it was found that the 2-hour pellet-sintering under 600°C was best to prepare superior SrS:Cu films. It was also found that the crystallinity of SrS:Cu films were greatly improved after 2-min rapid thermal annealing (RTA) process under 450°C.

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