Lee, YH Oh, JH Ju, BK Oh, MH 2024-01-21T13:12:52Z 2024-01-21T13:12:52Z 2021-09-05 2000-11 0013-4651 https://pubs.kist.re.kr/handle/201004/140974 In this work we fabricated thin-film electroluminescent (TFEL) cells with a new multilayered BaTiO3 layer for the low-voltage-driven devices. At first, we performed the voltage accelerated breakdown testing of the multilayered BaTiO3 having both high dielectric constant and high breakdown strength. The time-zero-breakdown distribution is shown to be dependent on surface roughness, while the long-term failure studied by time-dependent dielectric breakdown technique at high field is dependent on the bulk characteristics, i.e., transition layer within multilayered BaTiO3 (m-BT) films. Second, the TFEL devices were prepared using the multilayered BaTiO3 as dielectric materials. We observed a decrease of turn-on voltage with increasing thickness and increase of the maximum overvoltage. Third, typical symmetric capacitance-voltage and internal charge-phosphor field characteristics were obtained for the device with thin m-BT layers. With increasing thickness of m-BT the significant asymmetry with respect to the applied voltage polarity was observed. This is a main difference as compared with the symmetric characteristics of conventional TFEL devices with low dielectric constant insulators. The experimental results indicate that a selection of the thickness of upper m-BT and their deposition process would strongly affect the interfacial characteristics as well as bulk characteristics of an as-grown ZnS:Pr,Ce layer. (C) 2000 The Electrochemical Society. S0013-4651(00)01-118-6. All rights reserved. English ELECTROCHEMICAL SOC INC DIELECTRIC-BREAKDOWN DEVICES Characteristics of multilayered barium titanate films and their effect on thin-film electroluminescent cells Article 10.1149/1.1394072 1 JOURNAL OF THE ELECTROCHEMICAL SOCIETY, v.147, no.11, pp.4374 - 4378 JOURNAL OF THE ELECTROCHEMICAL SOCIETY 147 11 4374 4378 scie scopus 000090053700067 2-s2.0-0034323180 Electrochemistry Materials Science, Coatings & Films Electrochemistry Materials Science Article DIELECTRIC-BREAKDOWN DEVICES TFELD