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A light-emitting diode (LED) is a junction diode made of an epitaxial P-type layer and an epitaxial N-type layer on a heavily doped semiconductor compound substrate. Compared with traditional light sources, LEDs have the advantages of high luminous efficiency, low energy consumption, and less radiation, occupying an increasingly important position in the field of lighting.
To be able to use the LED chip die, the chip is usually packaged in a package for light to avoid direct contact of the chip with the environment, and the chip is packaged with LED phosphor. LED packaging is a key part to ensure LED quality. Alfa Chemistry utilizes all our experience in LED processing to ensure that the phosphor on the crystal meets all the necessary optical and mechanical requirements in LED packaging.
The materials used in LEDs must be of high quality to ensure color stability and environmental impact. The adhesives we have are not only ideal for spray applications, but they are also non-yellowing and have ideal heat and weather resistance.
Our novel adhesive technology provides many new ways to make long-lasting and reliable LED packaging, especially in high-end applications.
The benefits of working with us are self-evident:
Minimum color shift during the LED life cycle
Proven non-yellowing and thermal stability
Numerous refractive index options
It is an ideal choice for optimizing the light output coupling of the manifold package
Alfa Chemistry also provides support solutions for organic light-emitting diodes.
Organic light-emitting diodes are mainly divided into small-molecule-based light-emitting diodes (OLEDs) and polymer light-emitting diodes (PLEDs). The double heterostructure small-molecule OLED consists of three organic layers sandwiched between electrodes. The organic layers adjacent to the cathode and anode are the electron transport layer (ETL) and the hole transport layer (HTL), respectively. The emission layer (EML) is usually composed of luminescent dyes or dopants dispersed in a suitable host material.
Fig 1. Schematic of a double heterostructure OLED (a) and a polymer light emitting diode (PLED) (b).
PLED has a relatively simple architecture, and its light-emitting polymer (LEP) layer combines the main body, emitter, and charge transport functions in a single solution-processed layer of the device. Alfa Chemistry has many major chemical classes of LEPs, including polyphenylene vinylene (PPV) and polyfluorene (PFO) polymers, which have proven useful for PLED research.
Our products for OLEDs and PLEDs include, but are not limited to, the following:
We also provide "substrate and electrode" products, which include inorganic materials (Au, ITO, LiF) and substrates commonly used in OLED and PLED research.
Without high-quality materials and professional craftsmanship, LEDs will be technically impossible. This is why we not only provide LED packaging solutions for phosphors and photoresists. We cannot explain all of them here - please contact us to learn more about the entire product portfolio for LED processing.
If you do not find the product or would like to request a quote, please contact us.
