平面電極を用いた分散型無機ELパネルの基本特性

摘要

分散型無機EL素子は，塗布型の工程を用いることで低コストの生産が可能である．しかし，発光に高電圧駆動を要するなど，様々な課題を有する．本研究室では，くし型の電極をガラス基板に成膜し，従来の構造では実現不可能であった電界強度を実現した．蛍光粒子の蛍光スペクトルを観察した結果，490nm の蛍光強度を示した．断面SEM 像から蛍光粒子がくし型電極上に分散している様子が観察された．ガラス基板側から観察した場合，くし型電極がAu に比べてITO が高輝度であった．一方，蛍光層側から観察した場合，くし型電極にAuを用いた方は輝度が上昇した．%Distributed inorganic EL devices can now be produced at a low cost using a coating type. However, there are various problems such as requiring a high voltage to run lighting. This research succeeded in depositing new comb-type electrodes (cte) onto a glass substrate. We realized creating required electrical field in the cte structure. The experiment resulted in a fluorescence intensity of 490 nm. Fluorescent particles were observed in their distributed state on the cte using cross-sectional SEM images. When we observed the brightness from the glass substrate, the ITO samples of cte were of higher brightness compared with Au cte. However, when we observed the brightness from the phosphor layer, the samples which had the Au cte were brighter.