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- Title
Study on the Main‐Chain Structure of Amorphous Fluorine Resins for Encapsulating AlGaN‐Based DUV‐LEDs.
- Authors
Yamada, Kiho; Nagasawa, Yosuke; Nagai, Shoko; Hirano, Akira; Ippommatsu, Masamichi; Aosaki, Ko; Honda, Yoshio; Amano, Hiroshi; Akasaki, Isamu
- Abstract
The main chain structure of optically isotropic amorphous fluorine resin for encapsulating AlGaN‐based deep‐ultraviolet LEDs (λ < 300 nm) is studied. One type of amorphous fluorine resin has a five‐membered ring with a single oxygen atom and the other has that one with two oxygen atoms. Reliability testing is performed using AlGaN‐based LEDs of 262 and 289 nm. For the resin with two oxygen atoms in the ring, visible damage to the electrode and significantly increased leakage current are considered to been caused by the photolysis of the ring induced by irradiation with deep‐ultraviolet light. In contrast, electrode damage and increased leakage are not observed in the case of the resin with the single‐oxygen ring.
- Subjects
FLUORINE; AMORPHOUS substances; ALUMINUM gallium nitride; LIGHT emitting diodes; STRAY currents
- Publication
Physica Status Solidi. A: Applications & Materials Science, 2018, Vol 215, Issue 10, p1
- ISSN
1862-6300
- Publication type
Article
- DOI
10.1002/pssa.201700525