Large area inkjet-printed OLED fabrication with solution-processed TADF ink
Abstract This work demonstrates successful large area inkjet printing of a thermally activated delayed fluorescence (TADF) material as the emitting layer of organic light-emitting diodes (OLEDs). TADF materials enable efficient light emission without relying on heavy metals such as platinum or iridi...
| Main Authors: | , , , , , |
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| Format: | Article |
| Language: | English |
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Nature Portfolio
2023-11-01
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| Series: | Nature Communications |
| Online Access: | https://doi.org/10.1038/s41467-023-43014-7 |
| _version_ | 1797630124822102016 |
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| author | Chandra Kant Atul Shukla Sarah K. M. McGregor Shih-Chun Lo Ebinazar B. Namdas Monica Katiyar |
| author_facet | Chandra Kant Atul Shukla Sarah K. M. McGregor Shih-Chun Lo Ebinazar B. Namdas Monica Katiyar |
| author_sort | Chandra Kant |
| collection | DOAJ |
| description | Abstract This work demonstrates successful large area inkjet printing of a thermally activated delayed fluorescence (TADF) material as the emitting layer of organic light-emitting diodes (OLEDs). TADF materials enable efficient light emission without relying on heavy metals such as platinum or iridium. However, low-cost manufacturing of large-scale TADF OLEDs has been restricted due to their incompatibility with solution processing techniques. In this study, we develop ink formulation for a TADF material and show successful ink jet printing of intricate patterns over a large area (6400 mm2) without the use of any lithography. The stable ink is successfully achieved using a non-chlorinated binary solvent mixture for a solution processable TADF material, 3‐(9,9‐dimethylacridin‐10(9H)‐yl)‐9H‐xanthen‐9‐one dispersed in 4,4’-bis-(N-carbazolyl)-1,1’-biphenyl host. Using this ink, large area ink jet printed OLEDs with performance comparable to the control spin coated OLEDs are successfully achieved. In this work, we also show the impact of ink viscosity, density, and surface tension on the droplet formation and film quality as well as its potential for large-area roll-to-roll printing on a flexible substrate. The results represent a major step towards the use of TADF materials for large-area OLEDs without employing any lithography. |
| first_indexed | 2024-03-11T11:03:29Z |
| format | Article |
| id | doaj.art-b24ab35abefb44779ebf766e67060a05 |
| institution | Directory Open Access Journal |
| issn | 2041-1723 |
| language | English |
| last_indexed | 2024-03-11T11:03:29Z |
| publishDate | 2023-11-01 |
| publisher | Nature Portfolio |
| record_format | Article |
| series | Nature Communications |
| spelling | doaj.art-b24ab35abefb44779ebf766e67060a052023-11-12T12:22:32ZengNature PortfolioNature Communications2041-17232023-11-0114111010.1038/s41467-023-43014-7Large area inkjet-printed OLED fabrication with solution-processed TADF inkChandra Kant0Atul Shukla1Sarah K. M. McGregor2Shih-Chun Lo3Ebinazar B. Namdas4Monica Katiyar5Materials Science and Engineering Department, Indian Institute of Technology KanpurCentre for Organic Photonics & Electronics, The University of QueenslandCentre for Organic Photonics & Electronics, The University of QueenslandCentre for Organic Photonics & Electronics, The University of QueenslandCentre for Organic Photonics & Electronics, The University of QueenslandMaterials Science and Engineering Department, Indian Institute of Technology KanpurAbstract This work demonstrates successful large area inkjet printing of a thermally activated delayed fluorescence (TADF) material as the emitting layer of organic light-emitting diodes (OLEDs). TADF materials enable efficient light emission without relying on heavy metals such as platinum or iridium. However, low-cost manufacturing of large-scale TADF OLEDs has been restricted due to their incompatibility with solution processing techniques. In this study, we develop ink formulation for a TADF material and show successful ink jet printing of intricate patterns over a large area (6400 mm2) without the use of any lithography. The stable ink is successfully achieved using a non-chlorinated binary solvent mixture for a solution processable TADF material, 3‐(9,9‐dimethylacridin‐10(9H)‐yl)‐9H‐xanthen‐9‐one dispersed in 4,4’-bis-(N-carbazolyl)-1,1’-biphenyl host. Using this ink, large area ink jet printed OLEDs with performance comparable to the control spin coated OLEDs are successfully achieved. In this work, we also show the impact of ink viscosity, density, and surface tension on the droplet formation and film quality as well as its potential for large-area roll-to-roll printing on a flexible substrate. The results represent a major step towards the use of TADF materials for large-area OLEDs without employing any lithography.https://doi.org/10.1038/s41467-023-43014-7 |
| spellingShingle | Chandra Kant Atul Shukla Sarah K. M. McGregor Shih-Chun Lo Ebinazar B. Namdas Monica Katiyar Large area inkjet-printed OLED fabrication with solution-processed TADF ink Nature Communications |
| title | Large area inkjet-printed OLED fabrication with solution-processed TADF ink |
| title_full | Large area inkjet-printed OLED fabrication with solution-processed TADF ink |
| title_fullStr | Large area inkjet-printed OLED fabrication with solution-processed TADF ink |
| title_full_unstemmed | Large area inkjet-printed OLED fabrication with solution-processed TADF ink |
| title_short | Large area inkjet-printed OLED fabrication with solution-processed TADF ink |
| title_sort | large area inkjet printed oled fabrication with solution processed tadf ink |
| url | https://doi.org/10.1038/s41467-023-43014-7 |
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