Solid–Liquid Hybrid‐State Organic Lens for Highly Efficient Deep Ultraviolet Light‐Emitting Diodes
Deep ultraviolet light‐emitting diodes (DUV‐LEDs) are considered to be the most promising ultraviolet light sources for effective and fast sterilization under the worldwide spread of the coronavirus disease (COVID‐19). However, it reminds challenging to promote the light extraction of DUV‐LEDs owing...
| Main Authors: | , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2022-05-01
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| Series: | Advanced Photonics Research |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/adpr.202100211 |
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| author | Zongtao Li Jiexin Li Zihao Deng Yihua Qiu Jiasheng Li Yikai Yuan Liang Xu Xinrui Ding |
| author_facet | Zongtao Li Jiexin Li Zihao Deng Yihua Qiu Jiasheng Li Yikai Yuan Liang Xu Xinrui Ding |
| author_sort | Zongtao Li |
| collection | DOAJ |
| description | Deep ultraviolet light‐emitting diodes (DUV‐LEDs) are considered to be the most promising ultraviolet light sources for effective and fast sterilization under the worldwide spread of the coronavirus disease (COVID‐19). However, it reminds challenging to promote the light extraction of DUV‐LEDs owing to the strong DUV light absorption of conventional encapsulation materials. Herein, solid–liquid hybrid‐state gels (SLHGs) to fabricate organic lenses for DUV‐LEDs, which largely enhance the light extraction efficiency without sacrificing the working stability, are proposed. Solid‐state cross‐linked networks of polydimethylsiloxane are used in the SLHG structure to maintain the liquid components of silicone oil and demonstrate excellent formability, DUV transparency (over 90% transmittance in the UVC range), and thermal stability. The radiant power of DUV‐LEDs (275 nm) with the optimized SLHG organic lens is enhanced by 52.5% compared to a commercial quartz lens, achieving a record packaging optical effiency of 1.31 among solid‐state packaging DUV‐LEDs. A sterilization evaluation for SARS‐CoV‐2 demonstrates that the inactivation time can be reduced by ≈25% using the SLHG organic lens. Consequently, herein, a feasible and effective method to enhance the optical performance of DUV‐LEDs and advance their promising potential for disinfection applications is provided. |
| first_indexed | 2024-12-10T09:21:16Z |
| format | Article |
| id | doaj.art-81f4ad435a784233a8ab9e817db1bd93 |
| institution | Directory Open Access Journal |
| issn | 2699-9293 |
| language | English |
| last_indexed | 2024-12-10T09:21:16Z |
| publishDate | 2022-05-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Photonics Research |
| spelling | doaj.art-81f4ad435a784233a8ab9e817db1bd932022-12-22T01:54:41ZengWiley-VCHAdvanced Photonics Research2699-92932022-05-0135n/an/a10.1002/adpr.202100211Solid–Liquid Hybrid‐State Organic Lens for Highly Efficient Deep Ultraviolet Light‐Emitting DiodesZongtao Li0Jiexin Li1Zihao Deng2Yihua Qiu3Jiasheng Li4Yikai Yuan5Liang Xu6Xinrui Ding7National & Local Joint Engineering Research Center of Semiconductor Display and Optical Communication Devices South China University of Technology (SCUT) Guangzhou 510641 ChinaNational & Local Joint Engineering Research Center of Semiconductor Display and Optical Communication Devices South China University of Technology (SCUT) Guangzhou 510641 ChinaNational & Local Joint Engineering Research Center of Semiconductor Display and Optical Communication Devices South China University of Technology (SCUT) Guangzhou 510641 ChinaNational & Local Joint Engineering Research Center of Semiconductor Display and Optical Communication Devices South China University of Technology (SCUT) Guangzhou 510641 ChinaNational & Local Joint Engineering Research Center of Semiconductor Display and Optical Communication Devices South China University of Technology (SCUT) Guangzhou 510641 ChinaGuangdong Provincial Key Laboratory of Semiconductor Micro Display Foshan Nationstar Optoelectronics Company Ltd Foshan 528000 ChinaInstitute of Semiconductor Science and Technology South China Normal University Tianhe District 55 Zhongshan Avenue Guangzhou 510631 ChinaNational & Local Joint Engineering Research Center of Semiconductor Display and Optical Communication Devices South China University of Technology (SCUT) Guangzhou 510641 ChinaDeep ultraviolet light‐emitting diodes (DUV‐LEDs) are considered to be the most promising ultraviolet light sources for effective and fast sterilization under the worldwide spread of the coronavirus disease (COVID‐19). However, it reminds challenging to promote the light extraction of DUV‐LEDs owing to the strong DUV light absorption of conventional encapsulation materials. Herein, solid–liquid hybrid‐state gels (SLHGs) to fabricate organic lenses for DUV‐LEDs, which largely enhance the light extraction efficiency without sacrificing the working stability, are proposed. Solid‐state cross‐linked networks of polydimethylsiloxane are used in the SLHG structure to maintain the liquid components of silicone oil and demonstrate excellent formability, DUV transparency (over 90% transmittance in the UVC range), and thermal stability. The radiant power of DUV‐LEDs (275 nm) with the optimized SLHG organic lens is enhanced by 52.5% compared to a commercial quartz lens, achieving a record packaging optical effiency of 1.31 among solid‐state packaging DUV‐LEDs. A sterilization evaluation for SARS‐CoV‐2 demonstrates that the inactivation time can be reduced by ≈25% using the SLHG organic lens. Consequently, herein, a feasible and effective method to enhance the optical performance of DUV‐LEDs and advance their promising potential for disinfection applications is provided.https://doi.org/10.1002/adpr.202100211deep ultraviolet light-emitting diodesdisinfectionlight extraction efficiencyorganic lenssolid–liquid hybrid-state gels |
| spellingShingle | Zongtao Li Jiexin Li Zihao Deng Yihua Qiu Jiasheng Li Yikai Yuan Liang Xu Xinrui Ding Solid–Liquid Hybrid‐State Organic Lens for Highly Efficient Deep Ultraviolet Light‐Emitting Diodes Advanced Photonics Research deep ultraviolet light-emitting diodes disinfection light extraction efficiency organic lens solid–liquid hybrid-state gels |
| title | Solid–Liquid Hybrid‐State Organic Lens for Highly Efficient Deep Ultraviolet Light‐Emitting Diodes |
| title_full | Solid–Liquid Hybrid‐State Organic Lens for Highly Efficient Deep Ultraviolet Light‐Emitting Diodes |
| title_fullStr | Solid–Liquid Hybrid‐State Organic Lens for Highly Efficient Deep Ultraviolet Light‐Emitting Diodes |
| title_full_unstemmed | Solid–Liquid Hybrid‐State Organic Lens for Highly Efficient Deep Ultraviolet Light‐Emitting Diodes |
| title_short | Solid–Liquid Hybrid‐State Organic Lens for Highly Efficient Deep Ultraviolet Light‐Emitting Diodes |
| title_sort | solid liquid hybrid state organic lens for highly efficient deep ultraviolet light emitting diodes |
| topic | deep ultraviolet light-emitting diodes disinfection light extraction efficiency organic lens solid–liquid hybrid-state gels |
| url | https://doi.org/10.1002/adpr.202100211 |
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