Joule heating of solid state lighting
This project involved the finite element modeling on joule heating of Solid State Lighting (SSL). In this project, a specific failure mechanism-Joule heating that degrades the lifespan of SSL was targeted. Joule heating had reduced both the optical efficiency and lifespan of SSL. As a certain amount...
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| Other Authors: | |
| Format: | Final Year Project (FYP) |
| Language: | English |
| Published: |
2009
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| Online Access: | http://hdl.handle.net/10356/17836 |
| _version_ | 1811680930974138368 |
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| author | Yee, Kar Yin. |
| author2 | Tan Cher Ming |
| author_facet | Tan Cher Ming Yee, Kar Yin. |
| author_sort | Yee, Kar Yin. |
| collection | NTU |
| description | This project involved the finite element modeling on joule heating of Solid State Lighting (SSL). In this project, a specific failure mechanism-Joule heating that degrades the lifespan of SSL was targeted. Joule heating had reduced both the optical efficiency and lifespan of SSL. As a certain amount of current was passed through the diode, part of the input power will be dissipated as heat. This prevents 100% power conversion into optical which means a reduction in efficiency.
Hence, by simulating the SSL using a finite element program-COMSOL, we would be able to target the junction temperature of the SSL, which was unachievable experimentally, when a current was passed through. From there we could have a better understanding of the temperature variation across the multi-layered SSL against the power drop across the layers of different semiconductor materials within the SSL model.
To conclusion, the distribution of heat would be drawn up and analyzed as to which part of the entire SSL model was the one contributing to more heat as power was lost. |
| first_indexed | 2024-10-01T03:32:53Z |
| format | Final Year Project (FYP) |
| id | ntu-10356/17836 |
| institution | Nanyang Technological University |
| language | English |
| last_indexed | 2024-10-01T03:32:53Z |
| publishDate | 2009 |
| record_format | dspace |
| spelling | ntu-10356/178362023-07-07T17:09:00Z Joule heating of solid state lighting Yee, Kar Yin. Tan Cher Ming School of Electrical and Electronic Engineering DRNTU::Engineering::Electrical and electronic engineering::Power electronics This project involved the finite element modeling on joule heating of Solid State Lighting (SSL). In this project, a specific failure mechanism-Joule heating that degrades the lifespan of SSL was targeted. Joule heating had reduced both the optical efficiency and lifespan of SSL. As a certain amount of current was passed through the diode, part of the input power will be dissipated as heat. This prevents 100% power conversion into optical which means a reduction in efficiency. Hence, by simulating the SSL using a finite element program-COMSOL, we would be able to target the junction temperature of the SSL, which was unachievable experimentally, when a current was passed through. From there we could have a better understanding of the temperature variation across the multi-layered SSL against the power drop across the layers of different semiconductor materials within the SSL model. To conclusion, the distribution of heat would be drawn up and analyzed as to which part of the entire SSL model was the one contributing to more heat as power was lost. Bachelor of Engineering 2009-06-16T02:52:26Z 2009-06-16T02:52:26Z 2009 2009 Final Year Project (FYP) http://hdl.handle.net/10356/17836 en Nanyang Technological University 80 p. application/pdf |
| spellingShingle | DRNTU::Engineering::Electrical and electronic engineering::Power electronics Yee, Kar Yin. Joule heating of solid state lighting |
| title | Joule heating of solid state lighting |
| title_full | Joule heating of solid state lighting |
| title_fullStr | Joule heating of solid state lighting |
| title_full_unstemmed | Joule heating of solid state lighting |
| title_short | Joule heating of solid state lighting |
| title_sort | joule heating of solid state lighting |
| topic | DRNTU::Engineering::Electrical and electronic engineering::Power electronics |
| url | http://hdl.handle.net/10356/17836 |
| work_keys_str_mv | AT yeekaryin jouleheatingofsolidstatelighting |