Development of an Al2O3 filled composite for the bracket of ultraviolet light-emitting diodes (UV-LEDs)
Source abstract
Abstract
Abstract TiO2 filled polymer based bracket is used in commercialized low and mid-power UVA-LEDs. However, the strong UVA absorption of TiO2 reduces the light output. This paper reports the preparation and properties of an Al2O3 filled polymer based bracket material. Comparing with the conventional TiO2+SiO2 filled composite, the Al2O3+SiO2 filled composite shows a 1.2 times' improvement in optical reflection at 365 nm. The flexural strength and resilience of Al2O3+SiO2 filled composite are superior to the reference. Optical simulation of two UVA-LEDs packages shows a 9% improvement in optical output when Al2O3+SiO2 filled bracket is applied. Besides, the Al2O3+SiO2 filled composites also have better high-temperature reliability, higher glass transition temperature, comparable thermal stability and water absorption performance, which can be considered as a potential candidate to improve the performance of UVA-LEDs.
Source: openaire · Quality: candidate unverified · Source record ↗
Research context
OpenAlex topics: GaN-based semiconductor devices and materials · Advanced optical system design · Gas Sensing Nanomaterials and Sensors
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
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