Organic light emitting diode (OLED) is a high-performance optoelectronic device composed of charge transport layer and emitting organic layer.?When voltage is applied, the double carrier injection system of OLED provides electrons and holes to the electroluminescent material between the two electrodes, so as to produce characteristic electroluminescence with specific color and device performance according to the different organic materials used in the device.

OLEDs include small molecule light emitting diodes and polymer light emitting diodes (PLED).?Among them, the typical double heterostructure small molecule OLED is composed of three organic layers sandwiched between the electrodes.?The organic layers near the cathode and anode are electron transport layer (ETL) and hole transport layer (HTL), respectively.?The emitting layer usually contains a luminescent dye (EML) or dopant dispersed in a suitable host material (usually HTL or ETL material).?Pled has a relatively simple structure. Its single solution processing layer combines the light-emitting polymer (LEP) layer with the main body, emitter and charge transfer functions.

Aladdin provides a series of advanced high-purity OLED materials, including small molecule light emitters and dopants, luminescent polymers, phosphorescent and fluorescent host materials, inorganic and organic electron transport (hole barrier) materials, hole injection and hole transport materials, thermally activated delayed fluorescence (TADF) dopants and photosensitive materials.?For example, our super yellow luminescent PPV copolymer pdy-132 has the following characteristics: soluble super yellow luminescent PPV copolymer excellent reproducibility, wide-spectrum emission spectrum, very high efficiency, very low working voltage / PM 100000 CD / m2 pulse < 10 V, very long DC and AC life. We also provide a series of inorganic (AU, Ito, LIF) materials and substrates,?They can generally be used as substrates and electrodes in the manufacture of OLED and pled devices.?Our innovative LEP covers major compound types, including poly (p-phenylene vinylene) (PPV) and polyfluorene (PFO) polymers.