| Autor: |
Young Tae Park, Sung Hoon Jung, Seok Ho Kwon, Kang Seok Lee, Dong Wook Lee, Hwa Sub Oh, Jong-Min Park |
| Rok vydání: |
2019 |
| Předmět: |
|
| Zdroj: |
Journal of Nanoscience and Nanotechnology. 19:2219-2223 |
| ISSN: |
1533-4880 |
| DOI: |
10.1166/jnn.2019.15972 |
| Popis: |
We investigated broad-spectrum light emitting diodes appropriate for special lighting applications in terms of their optical behaviors and device performances according to the chirped multi-quantum well structures. As the well thickness was increased from 6 to 15 nm, the electroluminescent spectrum was broadened by 43%, the forward bias voltage was lowered by 7% and the light output power was showed similar values in comparison to light emitting diodes having conventional multiquantum well structures. In the case of the chirped multi-quantum well structures having sequentially decreasing the well thickness from 15 nm to 6 nm, the optical output power was decreased by 38% due to the spreading problems of holes into the n-side active region. |
| Databáze: |
OpenAIRE |
| Externí odkaz: |
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