Perovskite Nanocrystals Protected by Hermetically Sealing for Highly Bright and Stable Deep‐Blue Light‐Emitting Diodes
Abstract Metal–halide perovskite nanocrystals (NCs) have emerged as suitable light‐emitting materials for light‐emitting diodes (LEDs) and other practical applications. However, LEDs with perovskite NCs undergo environment‐induced and ion‐migration‐induced structural degradation during operation; th...
| Main Authors: | , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley
2023-08-01
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| Series: | Advanced Science |
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| Online Access: | https://doi.org/10.1002/advs.202302906 |
| _version_ | 1797742711191633920 |
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| author | Yongju Hong Chungman Yu Hyeondoo Je Jin Young Park Taekyung Kim Hionsuck Baik Gracita M. Tomboc Youngseo Kim Jung Min Ha Jinwhan Joo Chai Won Kim Han Young Woo Sungnam Park Dong Hoon Choi Kwangyeol Lee |
| author_facet | Yongju Hong Chungman Yu Hyeondoo Je Jin Young Park Taekyung Kim Hionsuck Baik Gracita M. Tomboc Youngseo Kim Jung Min Ha Jinwhan Joo Chai Won Kim Han Young Woo Sungnam Park Dong Hoon Choi Kwangyeol Lee |
| author_sort | Yongju Hong |
| collection | DOAJ |
| description | Abstract Metal–halide perovskite nanocrystals (NCs) have emerged as suitable light‐emitting materials for light‐emitting diodes (LEDs) and other practical applications. However, LEDs with perovskite NCs undergo environment‐induced and ion‐migration‐induced structural degradation during operation; therefore, novel NC design concepts, such as hermetic sealing of the perovskite NCs, are required. Thus far, viable synthetic conditions to form a robust and hermetic semiconducting shell on perovskite NCs have been rarely reported for LED applications because of the difficulties in the delicate engineering of encapsulation techniques. Herein, a highly bright and durable deep‐blue perovskite LED (PeLED) formed by hermetically sealing perovskite NCs with epitaxial ZnS shells is reported. This shell protects the perovskite NCs from the environment, facilitates charge injection/transport, and effectively suppresses interparticle ion migration during the LED operation, resulting in exceptional brightness (2916 cd m−2) at 451 nm and a high external quantum efficiency of 1.32%. Furthermore, even in the unencapsulated state, the LED shows a long operational lifetime (T50) of 1192 s (≈20 min) in the air. These results demonstrate that the epitaxial and hermetic encapsulation of perovskite NCs is a powerful strategy for fabricating high‐performance deep‐blue‐emitting PeLEDs. |
| first_indexed | 2024-03-12T14:44:29Z |
| format | Article |
| id | doaj.art-ede51702f32b469e900aec51f2e76b02 |
| institution | Directory Open Access Journal |
| issn | 2198-3844 |
| language | English |
| last_indexed | 2024-03-12T14:44:29Z |
| publishDate | 2023-08-01 |
| publisher | Wiley |
| record_format | Article |
| series | Advanced Science |
| spelling | doaj.art-ede51702f32b469e900aec51f2e76b022023-08-16T02:23:01ZengWileyAdvanced Science2198-38442023-08-011023n/an/a10.1002/advs.202302906Perovskite Nanocrystals Protected by Hermetically Sealing for Highly Bright and Stable Deep‐Blue Light‐Emitting DiodesYongju Hong0Chungman Yu1Hyeondoo Je2Jin Young Park3Taekyung Kim4Hionsuck Baik5Gracita M. Tomboc6Youngseo Kim7Jung Min Ha8Jinwhan Joo9Chai Won Kim10Han Young Woo11Sungnam Park12Dong Hoon Choi13Kwangyeol Lee14Department of Chemistry and Research Institute for Natural Sciences Korea University Seoul 02841 Republic of KoreaDepartment of Chemistry and Research Institute for Natural Sciences Korea University Seoul 02841 Republic of KoreaDepartment of Chemistry and Research Institute for Natural Sciences Korea University Seoul 02841 Republic of KoreaDepartment of Chemistry and Research Institute for Natural Sciences Korea University Seoul 02841 Republic of KoreaKorea Basic Science Institute (KBSI) Seoul 02841 Republic of KoreaKorea Basic Science Institute (KBSI) Seoul 02841 Republic of KoreaDepartment of Chemistry and Research Institute for Natural Sciences Korea University Seoul 02841 Republic of KoreaDepartment of Chemistry and Research Institute for Natural Sciences Korea University Seoul 02841 Republic of KoreaDepartment of Chemistry and Research Institute for Natural Sciences Korea University Seoul 02841 Republic of KoreaDepartment of Chemistry and Research Institute for Natural Sciences Korea University Seoul 02841 Republic of KoreaDepartment of Chemistry and Research Institute for Natural Sciences Korea University Seoul 02841 Republic of KoreaDepartment of Chemistry and Research Institute for Natural Sciences Korea University Seoul 02841 Republic of KoreaDepartment of Chemistry and Research Institute for Natural Sciences Korea University Seoul 02841 Republic of KoreaDepartment of Chemistry and Research Institute for Natural Sciences Korea University Seoul 02841 Republic of KoreaDepartment of Chemistry and Research Institute for Natural Sciences Korea University Seoul 02841 Republic of KoreaAbstract Metal–halide perovskite nanocrystals (NCs) have emerged as suitable light‐emitting materials for light‐emitting diodes (LEDs) and other practical applications. However, LEDs with perovskite NCs undergo environment‐induced and ion‐migration‐induced structural degradation during operation; therefore, novel NC design concepts, such as hermetic sealing of the perovskite NCs, are required. Thus far, viable synthetic conditions to form a robust and hermetic semiconducting shell on perovskite NCs have been rarely reported for LED applications because of the difficulties in the delicate engineering of encapsulation techniques. Herein, a highly bright and durable deep‐blue perovskite LED (PeLED) formed by hermetically sealing perovskite NCs with epitaxial ZnS shells is reported. This shell protects the perovskite NCs from the environment, facilitates charge injection/transport, and effectively suppresses interparticle ion migration during the LED operation, resulting in exceptional brightness (2916 cd m−2) at 451 nm and a high external quantum efficiency of 1.32%. Furthermore, even in the unencapsulated state, the LED shows a long operational lifetime (T50) of 1192 s (≈20 min) in the air. These results demonstrate that the epitaxial and hermetic encapsulation of perovskite NCs is a powerful strategy for fabricating high‐performance deep‐blue‐emitting PeLEDs.https://doi.org/10.1002/advs.202302906core/shelldeep‐bluehigh brightnesslight‐emitting diodesmetal–halide perovskites |
| spellingShingle | Yongju Hong Chungman Yu Hyeondoo Je Jin Young Park Taekyung Kim Hionsuck Baik Gracita M. Tomboc Youngseo Kim Jung Min Ha Jinwhan Joo Chai Won Kim Han Young Woo Sungnam Park Dong Hoon Choi Kwangyeol Lee Perovskite Nanocrystals Protected by Hermetically Sealing for Highly Bright and Stable Deep‐Blue Light‐Emitting Diodes Advanced Science core/shell deep‐blue high brightness light‐emitting diodes metal–halide perovskites |
| title | Perovskite Nanocrystals Protected by Hermetically Sealing for Highly Bright and Stable Deep‐Blue Light‐Emitting Diodes |
| title_full | Perovskite Nanocrystals Protected by Hermetically Sealing for Highly Bright and Stable Deep‐Blue Light‐Emitting Diodes |
| title_fullStr | Perovskite Nanocrystals Protected by Hermetically Sealing for Highly Bright and Stable Deep‐Blue Light‐Emitting Diodes |
| title_full_unstemmed | Perovskite Nanocrystals Protected by Hermetically Sealing for Highly Bright and Stable Deep‐Blue Light‐Emitting Diodes |
| title_short | Perovskite Nanocrystals Protected by Hermetically Sealing for Highly Bright and Stable Deep‐Blue Light‐Emitting Diodes |
| title_sort | perovskite nanocrystals protected by hermetically sealing for highly bright and stable deep blue light emitting diodes |
| topic | core/shell deep‐blue high brightness light‐emitting diodes metal–halide perovskites |
| url | https://doi.org/10.1002/advs.202302906 |
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