In:
Japanese Journal of Applied Physics, IOP Publishing, Vol. 30, No. 6A ( 1991-06-01), p. L1021-
Abstract:
The spectral response of the photo-induced transferred charge in Eu 2+ - or Ce 3+ -doped CaS and SrS thin-film electroluminescent (EL) devices has been studied. It is found that excitation spectra of the photo-induced transferred charge agree with those of photoluminescence. This result implies that the Eu 2+ or Ce 3+ luminescent centers are ionized by electric field when the centers are excited to the (4f) n -1 (5d) excited state. The dynamics of the EL emission are controlled by field-dependent ionization of the luminescent centers and by field-dependent trapping at the ionized centers, rather than by impact excitation of the luminescent centers.
Type of Medium:
Online Resource
ISSN:
0021-4922
,
1347-4065
DOI:
10.1143/JJAP.30.L1021
Language:
Unknown
Publisher:
IOP Publishing
Publication Date:
1991
detail.hit.zdb_id:
218223-3
detail.hit.zdb_id:
797294-5
detail.hit.zdb_id:
2006801-3
detail.hit.zdb_id:
797295-7