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QD/Zn(Mg)O solutions for QLED


Quantum Dot Light Emitting Diodes (QLED) has become a new type of display material due to its advantages of light color purity and adjustable wavelength.The spinning coating of QLED can not only evaluate the material properties of quantum dots, but also be the basic technology of large-area lighting devices.


With decades of deep work in the field of nanomaterials and solid QD material synthesis technology, Mesolight has made remarkable achievements in QLED, providing customers with high-quality products and related supporting services as well as overall solutions for process applications.

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Zn (Mg) O

Zn (Mg) O is often used as an electronic transportation material for various light-emitting devices due to its wide band gap (3.7 eV), weak absorption of visible light (transmittance exceeding 98%) and high binding energy. Doping Mg to adjust the forbidden band width, change the electron injection barrier, promote the injection balance of electrons and holes, and improve the luminous efficiency.


ZnMgO of Mesolight can improve the barrier of electron injection and the injection of balanced carriers. With QDs of Mesolight, red, green, and blue QLEDs prepared by spin-coating nanoparticle ZnMgO solution, the external quantum efficiency exceeds 18% 15%, 8%.


The external quantum efficiency (EQE) is the data measured after ZnMgO is made into a device (QLED) with the corresponding QD.

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Zn(Mg)O

SolventParticle SizeConcentrationNPs Amount Product ID
Ethanol ≈5nm 25 mg /mL 50 mg Zn(Mg)O-50
Ethanol ≈5nm 25 mg/mL 100 mg Zn(Mg)O-100
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Cd-based QDs

ColorPLFWHMQYEQEAmount Product ID
Blue 465±5nm <25nm >65% >8% 25mg Cd-based B QLED-465-25
Blue 465±5nm <25nm >65% >8% 50mg Cd-based B QLED-465-50
Blue 465±5nm <25nm >65% >8% 100mg Cd-based B QLED-465-100
Green 525±5nm <25nm >80% >15% 25mg Cd-based G QLED-525-25
Green 525±5nm <25nm >80% >15% 50mg Cd-based G QLED-525-50
Green 525±5nm <25nm >80% >15% 100mg Cd-based G QLED-525-100
Red 625±5nm <28nm >85% >18% 25mg Cd-based R QLED-625-25
Red 625±5nm <28nm >85% >18% 50mg Cd-based R QLED-625-50
Red 625±5nm <28nm >85% >18% 100mg Cd-based R QLED-625-100
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InP-based QDs

ColorPLFWHMQYEQEAmount Product ID
Green 525±5nm <45nm >60% >10% 25mg InP-based G QLED-525-25
Green 525±5nm <45nm >60% >10% 50mg InP-based G QLED-525-50
Green 525±5nm <45nm >60% >10% 100mg InP-based G QLED-525-100
Red 625±5nm <45nm >60% >10% 25mg InP-based R QLED-625-25
Red 625±5nm <45nm >60% >10% 50mg InP-based R QLED-625-50
Red 625±5nm <45nm >60% >10% 100mg InP-based R QLED-625-100
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ZnSe-based QDs

ColorPLFWHMQYEQEAmount Product ID
Blue 450±20nm <25nm >50% >8% 25mg ZnSe-based B QLED-450-25
Blue 450±20nm <25nm >50% >8% 50mg ZnSe-based B QLED-450-50
Blue 450±20nm <25nm >50% >8% 100mg ZnSe-based B QLED-450-100
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