Rapid light output degradation of GaN-based packaged LED in the early stage of humidity test
An initial sharp decrease in the light output of a high-power light-emitting diode is observed when it is exposed to humid condition. TGA and energy-dispersive system analyses confirm the possibility of moisture entrapment in the silicone encapsulation; moreover, the light scattering model verifies...
| Main Authors: | , , , |
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| Other Authors: | |
| Format: | Journal Article |
| Language: | English |
| Published: |
2013
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| Subjects: | |
| Online Access: | https://hdl.handle.net/10356/102789 http://hdl.handle.net/10220/16477 |
| _version_ | 1811694889091465216 |
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| author | Chen, B. K. Li, X. Tan, Cher Ming Chen, Sihan Joseph |
| author2 | School of Electrical and Electronic Engineering |
| author_facet | School of Electrical and Electronic Engineering Chen, B. K. Li, X. Tan, Cher Ming Chen, Sihan Joseph |
| author_sort | Chen, B. K. |
| collection | NTU |
| description | An initial sharp decrease in the light output of a high-power light-emitting diode is observed when it is exposed to humid condition. TGA and energy-dispersive system analyses confirm the possibility of moisture entrapment in the silicone encapsulation; moreover, the light scattering model verifies qualitatively the scattering of the light due to the entrapped moisture, and it is this scattering that renders an initial sharp drop in the light output. The finding shows the importance of pore size of the silicone gel in order to prevent such sharp decrease in the light output under a humid environment. |
| first_indexed | 2024-10-01T07:14:44Z |
| format | Journal Article |
| id | ntu-10356/102789 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T07:14:44Z |
| publishDate | 2013 |
| record_format | dspace |
| spelling | ntu-10356/1027892020-03-07T14:00:35Z Rapid light output degradation of GaN-based packaged LED in the early stage of humidity test Chen, B. K. Li, X. Tan, Cher Ming Chen, Sihan Joseph School of Electrical and Electronic Engineering A*STAR SIMTech DRNTU::Engineering::Electrical and electronic engineering An initial sharp decrease in the light output of a high-power light-emitting diode is observed when it is exposed to humid condition. TGA and energy-dispersive system analyses confirm the possibility of moisture entrapment in the silicone encapsulation; moreover, the light scattering model verifies qualitatively the scattering of the light due to the entrapped moisture, and it is this scattering that renders an initial sharp drop in the light output. The finding shows the importance of pore size of the silicone gel in order to prevent such sharp decrease in the light output under a humid environment. 2013-10-14T06:18:34Z 2019-12-06T21:00:13Z 2013-10-14T06:18:34Z 2019-12-06T21:00:13Z 2011 2011 Journal Article Tan, C. M., Chen, B. K., Li, X., & Chen, S. J. (2011). Rapid Light Output Degradation of GaN-Based Packaged LED in the Early Stage of Humidity Test. IEEE Transactions on Device and Materials Reliability, 12(1), 44-48. https://hdl.handle.net/10356/102789 http://hdl.handle.net/10220/16477 10.1109/TDMR.2011.2173346 en IEEE transactions on device and materials reliability |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering Chen, B. K. Li, X. Tan, Cher Ming Chen, Sihan Joseph Rapid light output degradation of GaN-based packaged LED in the early stage of humidity test |
| title | Rapid light output degradation of GaN-based packaged LED in the early stage of humidity test |
| title_full | Rapid light output degradation of GaN-based packaged LED in the early stage of humidity test |
| title_fullStr | Rapid light output degradation of GaN-based packaged LED in the early stage of humidity test |
| title_full_unstemmed | Rapid light output degradation of GaN-based packaged LED in the early stage of humidity test |
| title_short | Rapid light output degradation of GaN-based packaged LED in the early stage of humidity test |
| title_sort | rapid light output degradation of gan based packaged led in the early stage of humidity test |
| topic | DRNTU::Engineering::Electrical and electronic engineering |
| url | https://hdl.handle.net/10356/102789 http://hdl.handle.net/10220/16477 |
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