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The effects of metal interlayer structures on the performance of phosphorescent transparent organic light-emitting diodes
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- Authors
- Chul Woong Joo, Gunel Huseynova, Jae-Hyun Lee, Yong Hyun Kim, Jonghee Lee, Jun Yeob Lee
- Citation
- Journal of Industrial and Engineering Chemistry, Early Access
- ISSN
- 1226-086X
- Publisher
- Korean Society of Industrial Engineering Chemistry
- Language
- English
- Type
- Journal Article
- Abstract
- This study examines the effects of the thickness and structure of a silver (Ag) interlayer on the performance of phosphorescent red-emitting transparent organic light-emitting diodes (TOLEDs). Inserting an Ag interlayer enabled the top emission of TOLEDs to be enhanced by 1.4–3.1, resulting in a ten-fold decrease in bottom-to-top ratios from 7.6 to 0.76. We show that an extra thin Ag interlayer with a carefully constructed structure could optimize TOLEDs’ top emission by altering their microcavities. The top emission enhancement was verified by comparing the forward emission of devices with and without Ag interlayers. Thus, the TOLEDs with Ag interlayers displayed more balanced light emissions.
- Keyword
- Bottom-to-top ratio, Metal interlayers, Microcavity effects, Phosphorescent OLEDs, Silver strips, Top emission, Transparent OLEDs
- KSP Keywords
- Emission enhancement, Light-emitting diodes(LED5), Organic light-emitting diodes(OLED), Red-emitting, Top emission, metal interlayer, phosphorescent OLED, transparent organic light-emitting diodes