Determining Two-Dimensional Phosphor Surface Temperature Distribution of Phosphor-Coated LEDs Based on Hyper-Spectral Imaging
We present a high-resolution non-contact method for the measurement of two-dimensional (2D) phosphor surface temperature distribution (PSTD) of phosphor-coated light-emitting diodes (pc-LEDs) based on advanced hyper-spectral imaging technology. The studied pc-LEDs with a surface-mounted device struc...
| Main Authors: | , , , , , , , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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IEEE
2021-01-01
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| Series: | IEEE Journal of the Electron Devices Society |
| Subjects: | |
| Online Access: | https://ieeexplore.ieee.org/document/9534778/ |
| _version_ | 1818573784846696448 |
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| author | Chen Yang Zhi-Hui Li Zhen Li Fang-Yuan Zhu Hui-Min Chen Yu-Jia Gong Xiao-Ya Dong Zi-Quan Guo Guo-Long Chen Li-Hong Zhu Huan-Ting Chen Jian Xu Yuan Shi Jie Chen Mei-Bin Yao Yi-Jun Lu Zhong Chen |
| author_facet | Chen Yang Zhi-Hui Li Zhen Li Fang-Yuan Zhu Hui-Min Chen Yu-Jia Gong Xiao-Ya Dong Zi-Quan Guo Guo-Long Chen Li-Hong Zhu Huan-Ting Chen Jian Xu Yuan Shi Jie Chen Mei-Bin Yao Yi-Jun Lu Zhong Chen |
| author_sort | Chen Yang |
| collection | DOAJ |
| description | We present a high-resolution non-contact method for the measurement of two-dimensional (2D) phosphor surface temperature distribution (PSTD) of phosphor-coated light-emitting diodes (pc-LEDs) based on advanced hyper-spectral imaging technology. The studied pc-LEDs with a surface-mounted device structure are mainly consisted of blue InGaN/GaN-based LED chips (with a spectral emission at about 456 nm), red (Sr,Ca)AlSiN<sub>3</sub>: Eu<sup>2+</sup> phosphors (with a spectral emission at around 623 nm), and transparent silicone gels. Experimental temperature results are compared with those of micro-thermocouple (<inline-formula> <tex-math notation="LaTeX">$\mu $ </tex-math></inline-formula>-TC) and infrared thermal imaging (TI), and fairly good agreements can be noticed. However, the spatial resolution of this proposed method is more than one order of magnitude higher than that of TI method, and the proposed method provides more detailed surface temperature information of phosphors than the latter. Therefore, we believe that this proposed method can serve as useful tools for the non-contact measurement of PSTD in pc-LEDs with or without optics lens. |
| first_indexed | 2024-12-15T00:17:32Z |
| format | Article |
| id | doaj.art-358bb2590dd845dcb01541b0997bc08c |
| institution | Directory Open Access Journal |
| issn | 2168-6734 |
| language | English |
| last_indexed | 2024-12-15T00:17:32Z |
| publishDate | 2021-01-01 |
| publisher | IEEE |
| record_format | Article |
| series | IEEE Journal of the Electron Devices Society |
| spelling | doaj.art-358bb2590dd845dcb01541b0997bc08c2022-12-21T22:42:25ZengIEEEIEEE Journal of the Electron Devices Society2168-67342021-01-01982783010.1109/JEDS.2021.31116639534778Determining Two-Dimensional Phosphor Surface Temperature Distribution of Phosphor-Coated LEDs Based on Hyper-Spectral ImagingChen Yang0https://orcid.org/0000-0002-9263-3520Zhi-Hui Li1Zhen Li2Fang-Yuan Zhu3Hui-Min Chen4Yu-Jia Gong5Xiao-Ya Dong6Zi-Quan Guo7https://orcid.org/0000-0001-9862-1670Guo-Long Chen8Li-Hong Zhu9https://orcid.org/0000-0002-7919-1967Huan-Ting Chen10https://orcid.org/0000-0001-7231-8454Jian Xu11Yuan Shi12Jie Chen13Mei-Bin Yao14Yi-Jun Lu15https://orcid.org/0000-0002-1247-6597Zhong Chen16https://orcid.org/0000-0002-1473-2224Department of Electronic Science, Fujian Engineering Research Center for Solid-State Lighting, School of Electronic Science and Engineering, National Model Microelectronics College, Xiamen University, Xiamen, ChinaDepartment of Electronic Science, Fujian Engineering Research Center for Solid-State Lighting, School of Electronic Science and Engineering, National Model Microelectronics College, Xiamen University, Xiamen, ChinaDepartment of Electronic Science, Fujian Engineering Research Center for Solid-State Lighting, School of Electronic Science and Engineering, National Model Microelectronics College, Xiamen University, Xiamen, ChinaDepartment of Electronic Science, Fujian Engineering Research Center for Solid-State Lighting, School of Electronic Science and Engineering, National Model Microelectronics College, Xiamen University, Xiamen, ChinaDepartment of Electronic Science, Fujian Engineering Research Center for Solid-State Lighting, School of Electronic Science and Engineering, National Model Microelectronics College, Xiamen University, Xiamen, ChinaDepartment of Electronic Science, Fujian Engineering Research Center for Solid-State Lighting, School of Electronic Science and Engineering, National Model Microelectronics College, Xiamen University, Xiamen, ChinaDepartment of Electronic Science, Fujian Engineering Research Center for Solid-State Lighting, School of Electronic Science and Engineering, National Model Microelectronics College, Xiamen University, Xiamen, ChinaDepartment of Electronic Science, Fujian Engineering Research Center for Solid-State Lighting, School of Electronic Science and Engineering, National Model Microelectronics College, Xiamen University, Xiamen, ChinaDepartment of Electronic Science, Fujian Engineering Research Center for Solid-State Lighting, School of Electronic Science and Engineering, National Model Microelectronics College, Xiamen University, Xiamen, ChinaDepartment of Electronic Science, Fujian Engineering Research Center for Solid-State Lighting, School of Electronic Science and Engineering, National Model Microelectronics College, Xiamen University, Xiamen, ChinaCollege of Physics and Information Engineering, Minnan Normal University, Zhangzhou, ChinaLab of New Energy Materials and Devices, School of Physics and Electronic Information, Henan Polytechnic University, Jiaozuo, ChinaXiamen Products Quality Supervision & Inspection Institute, Xiamen, ChinaXiamen Hualian Electronics Corporation Ltd., Xiamen, ChinaFujian Science and Technology Innovation Laboratory for Energy Materials of China, Tan Kah Kee Innovation Laboratory, Xiamen, ChinaDepartment of Electronic Science, Fujian Engineering Research Center for Solid-State Lighting, School of Electronic Science and Engineering, National Model Microelectronics College, Xiamen University, Xiamen, ChinaDepartment of Electronic Science, Fujian Engineering Research Center for Solid-State Lighting, School of Electronic Science and Engineering, National Model Microelectronics College, Xiamen University, Xiamen, ChinaWe present a high-resolution non-contact method for the measurement of two-dimensional (2D) phosphor surface temperature distribution (PSTD) of phosphor-coated light-emitting diodes (pc-LEDs) based on advanced hyper-spectral imaging technology. The studied pc-LEDs with a surface-mounted device structure are mainly consisted of blue InGaN/GaN-based LED chips (with a spectral emission at about 456 nm), red (Sr,Ca)AlSiN<sub>3</sub>: Eu<sup>2+</sup> phosphors (with a spectral emission at around 623 nm), and transparent silicone gels. Experimental temperature results are compared with those of micro-thermocouple (<inline-formula> <tex-math notation="LaTeX">$\mu $ </tex-math></inline-formula>-TC) and infrared thermal imaging (TI), and fairly good agreements can be noticed. However, the spatial resolution of this proposed method is more than one order of magnitude higher than that of TI method, and the proposed method provides more detailed surface temperature information of phosphors than the latter. Therefore, we believe that this proposed method can serve as useful tools for the non-contact measurement of PSTD in pc-LEDs with or without optics lens.https://ieeexplore.ieee.org/document/9534778/Light-emitting diodesnon-contactmeasurementtwo-dimensionalphosphor surface temperature distribution |
| spellingShingle | Chen Yang Zhi-Hui Li Zhen Li Fang-Yuan Zhu Hui-Min Chen Yu-Jia Gong Xiao-Ya Dong Zi-Quan Guo Guo-Long Chen Li-Hong Zhu Huan-Ting Chen Jian Xu Yuan Shi Jie Chen Mei-Bin Yao Yi-Jun Lu Zhong Chen Determining Two-Dimensional Phosphor Surface Temperature Distribution of Phosphor-Coated LEDs Based on Hyper-Spectral Imaging IEEE Journal of the Electron Devices Society Light-emitting diodes non-contact measurement two-dimensional phosphor surface temperature distribution |
| title | Determining Two-Dimensional Phosphor Surface Temperature Distribution of Phosphor-Coated LEDs Based on Hyper-Spectral Imaging |
| title_full | Determining Two-Dimensional Phosphor Surface Temperature Distribution of Phosphor-Coated LEDs Based on Hyper-Spectral Imaging |
| title_fullStr | Determining Two-Dimensional Phosphor Surface Temperature Distribution of Phosphor-Coated LEDs Based on Hyper-Spectral Imaging |
| title_full_unstemmed | Determining Two-Dimensional Phosphor Surface Temperature Distribution of Phosphor-Coated LEDs Based on Hyper-Spectral Imaging |
| title_short | Determining Two-Dimensional Phosphor Surface Temperature Distribution of Phosphor-Coated LEDs Based on Hyper-Spectral Imaging |
| title_sort | determining two dimensional phosphor surface temperature distribution of phosphor coated leds based on hyper spectral imaging |
| topic | Light-emitting diodes non-contact measurement two-dimensional phosphor surface temperature distribution |
| url | https://ieeexplore.ieee.org/document/9534778/ |
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