Hole-Transporting Side-Chain Polymer Bearing a Thermally Crosslinkable Bicyclo[4.2.0]octa-1,3,5-trien-3-y1 Group for High Performing Thermally Activated Delayed Fluorescence OLED
DC Field | Value | Language |
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dc.contributor.author | Jeong, Cheol Hun | - |
dc.contributor.author | Godumala, Mallesham | - |
dc.contributor.author | Yoon, Jiwon | - |
dc.contributor.author | Choi, Suna | - |
dc.contributor.author | Kim, Yong Woo | - |
dc.contributor.author | Choi, Dae Hyuk | - |
dc.contributor.author | Cho, Min Ju | - |
dc.contributor.author | Choi, Dong Hoon | - |
dc.date.accessioned | 2021-09-01T14:54:59Z | - |
dc.date.available | 2021-09-01T14:54:59Z | - |
dc.date.created | 2021-06-19 | - |
dc.date.issued | 2019-05-15 | - |
dc.identifier.issn | 1944-8244 | - |
dc.identifier.uri | https://scholar.korea.ac.kr/handle/2021.sw.korea/65408 | - |
dc.description.abstract | A new side-chain polymer (X-TPACz) bearing hole-transporting pendant groups accompanying a thermally crosslinkable entity was synthesized using N-([1,1'-biphenyl]-4-y1)-N-(4-(9-(4-vinylbenzy1)-9H-carbazol-3-yl)pheny1)- bicyclo[4.2.0]octa-1(6),2,4-trien-3-amine (6) via addition polymerization. The X-TPACz could be spontaneously crosslinked without using any further reagents and showed a good film-forming property upon low-temperature thermal treatment. The thermal curing temperature for the X-TPACz film was optimized to be 180 degrees C based on a differential scanning calorimetry thermogram. Moreover, the thermal degradation temperature of X-TPACz measured to be over 467 degrees C using thermogravimetric analysis demonstrated that it shows excellent thermal stability. In particular, X-TPACz exhibits the highest occupied molecular orbital (HOMO) energy level to be -5.26 eV, which is beneficial for facile hole injection and transportation. Consequently, the thermally activated delayed fluorescence organic light-emitting diodes fabricated using X-TPACz as the hole-transporting material showed state-of-the-art performances with a low turn-on voltage (V-on) of only 2.7 V and a high external quantum efficiency (EQE) of 19.18% with a high current efficiency (CE) of 66.88 cd/A and a high power efficiency (PE) of 60.03 lm/W, which are highly superior to those of the familiar poly(9-vinylcarbazole) (PVK)-based devices (V-on= 3.9 V, EQE of 17.42%, with CE of 58.33 cd/A and PE of 33.32 lm/W). The extremely low turn-on voltage and high EQE were found to be due to the higher-lying highest occupied molecular orbital energy level (E-HOMO = 5.23 eV) and better hole transporting property of X-TPACz than those of PVK. | - |
dc.language | English | - |
dc.language.iso | en | - |
dc.publisher | AMER CHEMICAL SOC | - |
dc.subject | LIGHT-EMITTING-DIODES | - |
dc.subject | HIGH-EFFICIENCY | - |
dc.subject | LINKING | - |
dc.subject | LAYER | - |
dc.subject | DEVICES | - |
dc.title | Hole-Transporting Side-Chain Polymer Bearing a Thermally Crosslinkable Bicyclo[4.2.0]octa-1,3,5-trien-3-y1 Group for High Performing Thermally Activated Delayed Fluorescence OLED | - |
dc.type | Article | - |
dc.contributor.affiliatedAuthor | Cho, Min Ju | - |
dc.contributor.affiliatedAuthor | Choi, Dong Hoon | - |
dc.identifier.doi | 10.1021/acsami.9b03446 | - |
dc.identifier.scopusid | 2-s2.0-85065993366 | - |
dc.identifier.wosid | 000468364500052 | - |
dc.identifier.bibliographicCitation | ACS APPLIED MATERIALS & INTERFACES, v.11, no.19, pp.17602 - 17609 | - |
dc.relation.isPartOf | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.title | ACS APPLIED MATERIALS & INTERFACES | - |
dc.citation.volume | 11 | - |
dc.citation.number | 19 | - |
dc.citation.startPage | 17602 | - |
dc.citation.endPage | 17609 | - |
dc.type.rims | ART | - |
dc.type.docType | Article | - |
dc.description.journalClass | 1 | - |
dc.description.journalRegisteredClass | scie | - |
dc.description.journalRegisteredClass | scopus | - |
dc.relation.journalResearchArea | Science & Technology - Other Topics | - |
dc.relation.journalResearchArea | Materials Science | - |
dc.relation.journalWebOfScienceCategory | Nanoscience & Nanotechnology | - |
dc.relation.journalWebOfScienceCategory | Materials Science, Multidisciplinary | - |
dc.subject.keywordPlus | LIGHT-EMITTING-DIODES | - |
dc.subject.keywordPlus | HIGH-EFFICIENCY | - |
dc.subject.keywordPlus | LINKING | - |
dc.subject.keywordPlus | LAYER | - |
dc.subject.keywordPlus | DEVICES | - |
dc.subject.keywordAuthor | hole-transport material | - |
dc.subject.keywordAuthor | thermal crosslinking solution process | - |
dc.subject.keywordAuthor | thermally activated delayed fluorescence | - |
dc.subject.keywordAuthor | organic light-emitting diode | - |
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