Enhanced brightness and efficiency of organic light-emitting diodes with an LiF in the Alq/sub 3/ |
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| Authors: | Young Min Kim Joo Won Lee Jae Hoon Jung Kyeong-Kap Paek Man Young Sung Jai Kyeong Kim Byeong Kwon Ju |
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| Affiliation: | Coll. of Eng., Korea Univ., Seoul, South Korea; |
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| Abstract: | Highly efficient and bright organic light-emitting diodes have been realized by inserting a thin insulating lithium fluoride (LiF) layer in the tris-(8-hydroxyquinoline) aluminum (Alq/sub 3/) with conventional organic layers. By comparing the performances of newly devised devices as a function of the position of the LiF in the Alq/sub 3/ layer, the authors propose the optimal position of the LiF in the Alq/sub 3/ layer. Experimental results show that the efficiency and brightness of the newly devised device with LiF in the Alq/sub 3/ layer were seven times higher than that without LiF in the Alq/sub 3/ layer. |
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