Random wrinkle structures for spectrum preserved warm white organic light emitting diodes

Surface wrinkles of mesoscopic size were formed by a single photocuring process of an in-house synthesized linear liquid pre-polymer. The linear relationship between the amplitude and the period of the wrinkles indicates the presence of constant compressive strain during the wrinkling process. The s...

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Bibliographic Details
Published inJournal of industrial and engineering chemistry (Seoul, Korea) Vol. 117; pp. 298 - 306
Main Authors Moon, Jaehyun, Lee, Keunsoo, Park, Seung Koo, Joo, Chul Woong, Shin, Jin-Wook, Lee, Jonghee, Han, Jun-Han, Cho, Nam Sung
Format Journal Article
LanguageEnglish
Published Elsevier B.V 25.01.2023
한국공업화학회
Subjects
Efficiency
Lighting panel
Spectrum
Surface metrology
White organic light emitting diode
Wrinkles
화학공학
White organic light emitting diode
Efficiency
Surface metrology
Wrinkles
Lighting panel
Spectrum
Online AccessGet full text
ISSN1226-086X
1876-794X
DOI10.1016/j.jiec.2022.10.018

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Summary:Surface wrinkles of mesoscopic size were formed by a single photocuring process of an in-house synthesized linear liquid pre-polymer. The linear relationship between the amplitude and the period of the wrinkles indicates the presence of constant compressive strain during the wrinkling process. The stiffness ratio of the hard film to the soft foundation decreases as the initial film becomes thinner, providing a quantitative measure for estimating the wrinkle size. As an application, mesoscopic wrinkles were investigated as optical structures for enhanced light outcoupling and angular spectral stability of red, green, blue, and white organic light emitting diodes.
ISSN:1226-086X
1876-794X
DOI:10.1016/j.jiec.2022.10.018