Flexible Efficient Top-Emitting Organic Light-Emitting Devices on a Silk Substrate

A flexible efficient top-emitting organic light-emitting device (TOLED) on an off-the-shelf silk substrate has been demonstrated by planarizing the silk substrate with photopolymer NOA63. The flexibility of the bare silk substrates was retained in the planarized silk substrates due to ductile charac...

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Bibliographic Details
Published inIEEE photonics journal Vol. 9; no. 5; pp. 1 - 6
Main Authors Liu, Yue-Feng, An, Ming-Hui, Bi, Yan-Gang, Yin, Da, Feng, Jing, Sun, Hong-Bo
Format Journal Article
LanguageEnglish
Published IEEE 01.10.2017
Subjects
Biomedical monitoring
Fabrics
flexible
Morphology
Organic light emitting diodes
Organic light-emitting devices
silk substrate
Substrates
Surface morphology
Surface treatment
wearable
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Summary:A flexible efficient top-emitting organic light-emitting device (TOLED) on an off-the-shelf silk substrate has been demonstrated by planarizing the silk substrate with photopolymer NOA63. The flexibility of the bare silk substrates was retained in the planarized silk substrates due to ductile characteristics of cured NOA63. The planarized silk substrate has shown superiority on surface morphology, which is beneficial to the performances of OLEDs. Their maximum luminance and current efficiency are 45545 <inline-formula><tex-math notation="LaTeX">{\rm{cd/ m}}^{2}</tex-math> </inline-formula> and 37.7 cd/A, respectively. Moreover, our devices show not only high luminance and efficiency but also high flexibility and mechanical robustness. Emission of operating devices is uniform and free of defects under a very small bending radius and the luminance and efficiency do not deteriorate obviously after repeated bending. TOLEDs on silk substrate are a potential alternative to wearable displays.
ISSN:1943-0655
1943-0647
DOI:10.1109/JPHOT.2017.2740618