Stretchable array of CdSe/ZnS quantum-dot light emitting diodes for visual display of bio-signals
DC Field | Value | Language |
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dc.contributor.author | Lee, Yonghui | - |
dc.contributor.author | Kim, Dong Sik | - |
dc.contributor.author | Jin, Sang Woo | - |
dc.contributor.author | Lee, Hanchan | - |
dc.contributor.author | Jeong, Yu Ra | - |
dc.contributor.author | You, Ilhwan | - |
dc.contributor.author | Zi, Goangseup | - |
dc.contributor.author | Ha, Jeong Sook | - |
dc.date.accessioned | 2022-02-11T00:40:21Z | - |
dc.date.available | 2022-02-11T00:40:21Z | - |
dc.date.created | 2022-02-09 | - |
dc.date.issued | 2022-01-01 | - |
dc.identifier.issn | 1385-8947 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/135275 | - |
dc.description.abstract | Display devices that can visually present various bio-signals are a core future technology required for skin attachable wearable electronics. Quantum dot light emitting diodes (QD-LEDs), which can be used as high performance display devices, exhibit many advantages such as a narrow bandwidth, high color purity, high environmental stability, easy and fast processing, and a high brightness at low voltage. In this study, we report on the fabrication of a stretchable QD-LED array for the visual display of body movement and skin temperature signals from skin-attached sensors. After forming an array of a rigid NOA63 islands, an array of CdSe/ZnS QDLEDs is fabricated on top of that island array and electrically connected using liquid metal Galinstan interconnections. Finally, the array of QD-LEDs on the NOA63 islands is transferred onto a stretchable elastomer substrate of Ecoflex/PDMS. Of particular importance, for stable performance of the QD-LEDs under deformation, in replacement of the conventionally used ITO, a flexible and highly transparent electrode of Au grid/Ethylene glycol doped PEDOT:PSS is used. Such a design architecture can minimize the strain applied to the QD-LEDs by concentrating the strain onto the soft elastomer film substrate and the Galinstan interconnections. As a result, the fabricated QD-LED array exhibits stable operation under both 50% uniaxial and 30% biaxial strains. After attachment of the stretchable QD-LED array onto skin, the extent of knee bending, and changes in skin temperature are displayed as changes in the pattern of the QD-LED array. This work demonstrates the potential application of our stretchable array of QD-LEDs for easy and daily monitoring of health conditions through a visual display. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | ELSEVIER SCIENCE SA | - |
dc.subject | MICRO-SUPERCAPACITORS | - |
dc.subject | HIGH-PERFORMANCE | - |
dc.subject | SOLAR-CELLS | - |
dc.subject | GRAPHENE | - |
dc.subject | DEVICES | - |
dc.subject | TRANSPARENT | - |
dc.subject | ELECTRODES | - |
dc.subject | PEDOTPSS | - |
dc.title | Stretchable array of CdSe/ZnS quantum-dot light emitting diodes for visual display of bio-signals | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Ha, Jeong Sook | - |
dc.identifier.doi | 10.1016/j.cej.2021.130858 | - |
dc.identifier.scopusid | 2-s2.0-85108635852 | - |
dc.identifier.wosid | 000713719700001 | - |
dc.identifier.bibliographicCitation | CHEMICAL ENGINEERING JOURNAL, v.427 | - |
dc.relation.isPartOf | CHEMICAL ENGINEERING JOURNAL | - |
dc.citation.title | CHEMICAL ENGINEERING JOURNAL | - |
dc.citation.volume | 427 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Engineering | - |
dc.relation.journalWebOfScienceCategory | Engineering, Environmental | - |
dc.relation.journalWebOfScienceCategory | Engineering, Chemical | - |
dc.subject.keywordPlus | DEVICES | - |
dc.subject.keywordPlus | ELECTRODES | - |
dc.subject.keywordPlus | GRAPHENE | - |
dc.subject.keywordPlus | HIGH-PERFORMANCE | - |
dc.subject.keywordPlus | MICRO-SUPERCAPACITORS | - |
dc.subject.keywordPlus | PEDOTPSS | - |
dc.subject.keywordPlus | SOLAR-CELLS | - |
dc.subject.keywordPlus | TRANSPARENT | - |
dc.subject.keywordAuthor | Bio-signals | - |
dc.subject.keywordAuthor | Body movement | - |
dc.subject.keywordAuthor | Liquid metal | - |
dc.subject.keywordAuthor | QD-LED | - |
dc.subject.keywordAuthor | Skin temperature | - |
dc.subject.keywordAuthor | Stretchable display | - |
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