Organic–Inorganic Hybrid Device with a Novel Deep-Blue Emitter of a Donor–Acceptor Type, with ZnO Nanoparticles for Solution-Processed OLEDs
Two new deep-blue emitters with bipolar properties based on an organoboron acceptor and carbazole donor were newly synthesized: 2-(9H-carbazol-9-yl)-5-(2,12-di-tert-butyl-5,9-dioxa-13b-boranaphtho [3,2,1-de]anthracen-7-yl)-5H-benzo[b]carbazole (TDBA-BCZ) and 5-(2,12-di-tert-butyl-5,9-dioxa-13b-boran...
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| Format: | Article |
| Language: | English |
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MDPI AG
2022-10-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/21/3806 |
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| author | Seokwoo Kang Raveendra Jillella Sunwoo Park Sangshin Park Joo Hwan Kim Dakyeung Oh Joonghan Kim Jongwook Park |
| author_facet | Seokwoo Kang Raveendra Jillella Sunwoo Park Sangshin Park Joo Hwan Kim Dakyeung Oh Joonghan Kim Jongwook Park |
| author_sort | Seokwoo Kang |
| collection | DOAJ |
| description | Two new deep-blue emitters with bipolar properties based on an organoboron acceptor and carbazole donor were newly synthesized: 2-(9H-carbazol-9-yl)-5-(2,12-di-tert-butyl-5,9-dioxa-13b-boranaphtho [3,2,1-de]anthracen-7-yl)-5H-benzo[b]carbazole (TDBA-BCZ) and 5-(2,12-di-tert-butyl-5,9-dioxa-13b-boranaphtho [3,2,1-de]anthracen-7-yl)-8-phenyl-5,8-dihydroindolo[2,3-c]carbazole (TDBA-PCZ). The two emitters showed deep-blue and real-blue photoluminescence emission in their solution and film states, respectively. The doped spin-coated films were prepared using synthesized materials and showed a root-mean-square roughness of less than 0.52 nm, indicating excellent surface morphology. The doped devices, fabricated via a solution process using TDBA-BCZ and TDBA-PCZ as the dopants, showed electroluminescence peaks at 428 and 461 nm, corresponding to the Commission Internationale de L’éclairage (CIE) coordinates of (0.161, 0.046) and (0.151, 0.155), respectively. The external quantum efficiency (EQE)/current efficiency (CE) of the solution-processed forward devices, with TDBA-BCZ and TDBA-PCZ as dopants, were 7.73%/8.67 cd/A and 10.58%/14.24 cd/A, respectively. An inverted OLED device fabricated using rod-shaped ZnO nanoparticles as an electron injection layer showed a CE of 1.09 cd/A and an EQE of 0.30%. |
| first_indexed | 2024-03-09T18:47:30Z |
| format | Article |
| id | doaj.art-e8b7e8f990c8423d8731301353cfa721 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T18:47:30Z |
| publishDate | 2022-10-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-e8b7e8f990c8423d8731301353cfa7212023-11-24T06:09:33ZengMDPI AGNanomaterials2079-49912022-10-011221380610.3390/nano12213806Organic–Inorganic Hybrid Device with a Novel Deep-Blue Emitter of a Donor–Acceptor Type, with ZnO Nanoparticles for Solution-Processed OLEDsSeokwoo Kang0Raveendra Jillella1Sunwoo Park2Sangshin Park3Joo Hwan Kim4Dakyeung Oh5Joonghan Kim6Jongwook Park7Integrated Engineering, Department of Chemical Engineering, Kyung Hee University, Yongin 17104, KoreaIntegrated Engineering, Department of Chemical Engineering, Kyung Hee University, Yongin 17104, KoreaIntegrated Engineering, Department of Chemical Engineering, Kyung Hee University, Yongin 17104, KoreaIntegrated Engineering, Department of Chemical Engineering, Kyung Hee University, Yongin 17104, KoreaIntegrated Engineering, Department of Chemical Engineering, Kyung Hee University, Yongin 17104, KoreaDepartment of Chemistry, The Catholic University of Korea, Bucheon 14662, KoreaDepartment of Chemistry, The Catholic University of Korea, Bucheon 14662, KoreaIntegrated Engineering, Department of Chemical Engineering, Kyung Hee University, Yongin 17104, KoreaTwo new deep-blue emitters with bipolar properties based on an organoboron acceptor and carbazole donor were newly synthesized: 2-(9H-carbazol-9-yl)-5-(2,12-di-tert-butyl-5,9-dioxa-13b-boranaphtho [3,2,1-de]anthracen-7-yl)-5H-benzo[b]carbazole (TDBA-BCZ) and 5-(2,12-di-tert-butyl-5,9-dioxa-13b-boranaphtho [3,2,1-de]anthracen-7-yl)-8-phenyl-5,8-dihydroindolo[2,3-c]carbazole (TDBA-PCZ). The two emitters showed deep-blue and real-blue photoluminescence emission in their solution and film states, respectively. The doped spin-coated films were prepared using synthesized materials and showed a root-mean-square roughness of less than 0.52 nm, indicating excellent surface morphology. The doped devices, fabricated via a solution process using TDBA-BCZ and TDBA-PCZ as the dopants, showed electroluminescence peaks at 428 and 461 nm, corresponding to the Commission Internationale de L’éclairage (CIE) coordinates of (0.161, 0.046) and (0.151, 0.155), respectively. The external quantum efficiency (EQE)/current efficiency (CE) of the solution-processed forward devices, with TDBA-BCZ and TDBA-PCZ as dopants, were 7.73%/8.67 cd/A and 10.58%/14.24 cd/A, respectively. An inverted OLED device fabricated using rod-shaped ZnO nanoparticles as an electron injection layer showed a CE of 1.09 cd/A and an EQE of 0.30%.https://www.mdpi.com/2079-4991/12/21/3806ZnOblue emittersolution process |
| spellingShingle | Seokwoo Kang Raveendra Jillella Sunwoo Park Sangshin Park Joo Hwan Kim Dakyeung Oh Joonghan Kim Jongwook Park Organic–Inorganic Hybrid Device with a Novel Deep-Blue Emitter of a Donor–Acceptor Type, with ZnO Nanoparticles for Solution-Processed OLEDs Nanomaterials ZnO blue emitter solution process |
| title | Organic–Inorganic Hybrid Device with a Novel Deep-Blue Emitter of a Donor–Acceptor Type, with ZnO Nanoparticles for Solution-Processed OLEDs |
| title_full | Organic–Inorganic Hybrid Device with a Novel Deep-Blue Emitter of a Donor–Acceptor Type, with ZnO Nanoparticles for Solution-Processed OLEDs |
| title_fullStr | Organic–Inorganic Hybrid Device with a Novel Deep-Blue Emitter of a Donor–Acceptor Type, with ZnO Nanoparticles for Solution-Processed OLEDs |
| title_full_unstemmed | Organic–Inorganic Hybrid Device with a Novel Deep-Blue Emitter of a Donor–Acceptor Type, with ZnO Nanoparticles for Solution-Processed OLEDs |
| title_short | Organic–Inorganic Hybrid Device with a Novel Deep-Blue Emitter of a Donor–Acceptor Type, with ZnO Nanoparticles for Solution-Processed OLEDs |
| title_sort | organic inorganic hybrid device with a novel deep blue emitter of a donor acceptor type with zno nanoparticles for solution processed oleds |
| topic | ZnO blue emitter solution process |
| url | https://www.mdpi.com/2079-4991/12/21/3806 |
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