Rare Earth-Doped Phosphors for White Light-Emitting Diodes
| Autor: | Yasuo Shimomura, Takuya Hasegawa, S.W. Kim, Gin-ya Adachi, Mineo Sato, Kenji Toda |
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| Rok vydání: | 2016 |
| Předmět: |
Incandescent light bulb
business.industry Doping chemistry.chemical_element Phosphor 02 engineering and technology Yttrium 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences law.invention Color rendering index chemistry law Optoelectronics 0210 nano-technology Luminescence business Diode Light-emitting diode |
| DOI: | 10.1016/bs.hpcre.2016.03.001 |
| Popis: | In 1996, a new lighting device was proposed by Nichia Chemical Co., Japan, using a blue InGaN LED chip coated with a yellow-emitting phosphor of yttrium aluminum garnet (Y 2.9 Ce 0.1 Al 5 O 12 , YAG:Ce 3 + ), so-called white LEDs. The lighting device has numerous advantages over traditional incandescent and fluorescent lamps in the viewpoints such as small size, long lifetime, robustness, fast switching, and high efficiency. The performances, such as emission efficiency and color rendering index, of the lighting device are known to strongly depend on the luminescence properties of phosphors. Therefore, the aim of this review is to provide answers for questions regarding the kinds of phosphor host materials that should be selected, the kinds of robust structures that should be targeted, which rare earth elements should be selected for the desired color emissions, and how the materials should be synthesized. |
| Databáze: | OpenAIRE |
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