Enhanced Light Extraction from Organic Light-Emitting Diodes with Micro-Nano Hybrid Structure
In this study, an external light extraction layer with a micro-nano hybrid structure was applied to improve the external light extraction efficiency of organic light-emitting diodes (OLEDs). A reactive ion-etching (RIE) process, using O<sub>2</sub> and CHF<sub>3</sub> plasma,...
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| Format: | Article |
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MDPI AG
2022-04-01
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| Series: | Nanomaterials |
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| Online Access: | https://www.mdpi.com/2079-4991/12/8/1266 |
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| author | Eun-Jeong Bae Shin-Woo Kang Geun-Su Choi Eun-Bi Jang Dong-Hyun Baek Byeong-Kwon Ju Young-Wook Park |
| author_facet | Eun-Jeong Bae Shin-Woo Kang Geun-Su Choi Eun-Bi Jang Dong-Hyun Baek Byeong-Kwon Ju Young-Wook Park |
| author_sort | Eun-Jeong Bae |
| collection | DOAJ |
| description | In this study, an external light extraction layer with a micro-nano hybrid structure was applied to improve the external light extraction efficiency of organic light-emitting diodes (OLEDs). A reactive ion-etching (RIE) process, using O<sub>2</sub> and CHF<sub>3</sub> plasma, was performed on the surface of the micro-scale pattern to form micro-nano hybrid structures. According to the results of this study, the nanostructures formed by the treatment of O<sub>2</sub> and CHF<sub>3</sub> were different, and the efficiency according to the structures was analyzed experimentally and theoretically. As a result, the OLED, to which the micro-nano hybrid structure, manufactured through a simple process, is applied, improved the external light extraction efficiency by up to 38%, and an extended viewing angle profile was obtained. Additionally, an effective method for enhancing the out-coupling efficiency of OLEDs was presented by optimizing the micro-nano hybrid structure according to process conditions. |
| first_indexed | 2024-03-09T04:21:30Z |
| format | Article |
| id | doaj.art-f3ff884a831549bc90fcfd5d163e0c59 |
| institution | Directory Open Access Journal |
| issn | 2079-4991 |
| language | English |
| last_indexed | 2024-03-09T04:21:30Z |
| publishDate | 2022-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Nanomaterials |
| spelling | doaj.art-f3ff884a831549bc90fcfd5d163e0c592023-12-03T13:47:23ZengMDPI AGNanomaterials2079-49912022-04-01128126610.3390/nano12081266Enhanced Light Extraction from Organic Light-Emitting Diodes with Micro-Nano Hybrid StructureEun-Jeong Bae0Shin-Woo Kang1Geun-Su Choi2Eun-Bi Jang3Dong-Hyun Baek4Byeong-Kwon Ju5Young-Wook Park6Nano and Organic-Electronics Laboratory, Department of Display and Semiconductor Engineering, Sun Moon University, Asan 31460, KoreaNano and Organic-Electronics Laboratory, Department of Display and Semiconductor Engineering, Sun Moon University, Asan 31460, KoreaNano and Organic-Electronics Laboratory, Department of Display and Semiconductor Engineering, Sun Moon University, Asan 31460, KoreaNano and Organic-Electronics Laboratory, Department of Display and Semiconductor Engineering, Sun Moon University, Asan 31460, KoreaCenter for Next Generation Semiconductor Technology, Department of Display and Semiconductor Engineering, Sun Moon University, Asan 31460, KoreaDisplay and Nanosystem Laboratory, Department of Electrical Engineering, Korea University, Seoul 02841, KoreaNano and Organic-Electronics Laboratory, Department of Display and Semiconductor Engineering, Sun Moon University, Asan 31460, KoreaIn this study, an external light extraction layer with a micro-nano hybrid structure was applied to improve the external light extraction efficiency of organic light-emitting diodes (OLEDs). A reactive ion-etching (RIE) process, using O<sub>2</sub> and CHF<sub>3</sub> plasma, was performed on the surface of the micro-scale pattern to form micro-nano hybrid structures. According to the results of this study, the nanostructures formed by the treatment of O<sub>2</sub> and CHF<sub>3</sub> were different, and the efficiency according to the structures was analyzed experimentally and theoretically. As a result, the OLED, to which the micro-nano hybrid structure, manufactured through a simple process, is applied, improved the external light extraction efficiency by up to 38%, and an extended viewing angle profile was obtained. Additionally, an effective method for enhancing the out-coupling efficiency of OLEDs was presented by optimizing the micro-nano hybrid structure according to process conditions.https://www.mdpi.com/2079-4991/12/8/1266organic light-emitting diodeslight extractionreactive ion etchingmico-nano hybrid structure |
| spellingShingle | Eun-Jeong Bae Shin-Woo Kang Geun-Su Choi Eun-Bi Jang Dong-Hyun Baek Byeong-Kwon Ju Young-Wook Park Enhanced Light Extraction from Organic Light-Emitting Diodes with Micro-Nano Hybrid Structure Nanomaterials organic light-emitting diodes light extraction reactive ion etching mico-nano hybrid structure |
| title | Enhanced Light Extraction from Organic Light-Emitting Diodes with Micro-Nano Hybrid Structure |
| title_full | Enhanced Light Extraction from Organic Light-Emitting Diodes with Micro-Nano Hybrid Structure |
| title_fullStr | Enhanced Light Extraction from Organic Light-Emitting Diodes with Micro-Nano Hybrid Structure |
| title_full_unstemmed | Enhanced Light Extraction from Organic Light-Emitting Diodes with Micro-Nano Hybrid Structure |
| title_short | Enhanced Light Extraction from Organic Light-Emitting Diodes with Micro-Nano Hybrid Structure |
| title_sort | enhanced light extraction from organic light emitting diodes with micro nano hybrid structure |
| topic | organic light-emitting diodes light extraction reactive ion etching mico-nano hybrid structure |
| url | https://www.mdpi.com/2079-4991/12/8/1266 |
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