DC Field | Value | Language |
---|---|---|
dc.contributor.author | Cho, Himchan | ko |
dc.contributor.author | Pan, Jia-Ahn | ko |
dc.contributor.author | Wu, Haoqi | ko |
dc.contributor.author | Lan, Xinzheng | ko |
dc.contributor.author | Coropceanu, Igor | ko |
dc.contributor.author | Wang, Yuanyuan | ko |
dc.contributor.author | Cho, Wooje | ko |
dc.contributor.author | Hill, Ethan A. | ko |
dc.contributor.author | Anderson, John S. | ko |
dc.contributor.author | Talapin, Dmitri V. | ko |
dc.date.accessioned | 2021-03-06T04:30:05Z | - |
dc.date.available | 2021-03-06T04:30:05Z | - |
dc.date.created | 2021-03-06 | - |
dc.date.created | 2021-03-06 | - |
dc.date.issued | 2020-11 | - |
dc.identifier.citation | ADVANCED MATERIALS, v.32, no.46 | - |
dc.identifier.issn | 0935-9648 | - |
dc.identifier.uri | http://hdl.handle.net/10203/281282 | - |
dc.description.abstract | Precise patterning of quantum dot (QD) layers is an important prerequisite for fabricating QD light-emitting diode (QLED) displays and other optoelectronic devices. However, conventional patterning methods cannot simultaneously meet the stringent requirements of resolution, throughput, and uniformity of the pattern profile while maintaining a high photoluminescence quantum yield (PLQY) of the patterned QD layers. Here, a specially designed nanocrystal ink is introduced, "photopatternable emissive nanocrystals" (PENs), which satisfies these requirements. Photoacid generators in the PEN inks allow photoresist-free, high-resolution optical patterning of QDs through photochemical reactions and in situ ligand exchange in QD films. Various fluorescence and electroluminescence patterns with a feature size down to approximate to 1.5 mu m are demonstrated using red, green, and blue PEN inks. The patterned QD films maintain approximate to 75% of original PLQY and the electroluminescence characteristics of the patterned QLEDs are comparable to thopse of non-patterned control devices. The patterning mechanism is elucidated by in-depth investigation of the photochemical transformations of the photoacid generators and changes in the optical properties of the QDs at each patterning step. This advanced patterning method provides a new way for additive manufacturing of integrated optoelectronic devices using colloidal QDs. | - |
dc.language | English | - |
dc.publisher | WILEY-V C H VERLAG GMBH | - |
dc.title | Direct Optical Patterning of Quantum Dot Light-Emitting Diodes via In Situ Ligand Exchange | - |
dc.type | Article | - |
dc.identifier.wosid | 000573976700001 | - |
dc.identifier.scopusid | 2-s2.0-85091741355 | - |
dc.type.rims | ART | - |
dc.citation.volume | 32 | - |
dc.citation.issue | 46 | - |
dc.citation.publicationname | ADVANCED MATERIALS | - |
dc.identifier.doi | 10.1002/adma.202003805 | - |
dc.contributor.localauthor | Cho, Himchan | - |
dc.contributor.nonIdAuthor | Pan, Jia-Ahn | - |
dc.contributor.nonIdAuthor | Wu, Haoqi | - |
dc.contributor.nonIdAuthor | Lan, Xinzheng | - |
dc.contributor.nonIdAuthor | Coropceanu, Igor | - |
dc.contributor.nonIdAuthor | Wang, Yuanyuan | - |
dc.contributor.nonIdAuthor | Cho, Wooje | - |
dc.contributor.nonIdAuthor | Hill, Ethan A. | - |
dc.contributor.nonIdAuthor | Anderson, John S. | - |
dc.contributor.nonIdAuthor | Talapin, Dmitri V. | - |
dc.description.isOpenAccess | N | - |
dc.type.journalArticle | Article | - |
dc.subject.keywordAuthor | direct optical patterning | - |
dc.subject.keywordAuthor | inorganic nanomaterials | - |
dc.subject.keywordAuthor | photochemistry | - |
dc.subject.keywordAuthor | quantum dot electroluminescence | - |
dc.subject.keywordAuthor | quantum-dot ligand exchange | - |
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