Fabrication of a low-voltage light emitting device based on carbon nanotubes and rare-earth doped nanocrystals

Field emission displays using carbon nanotubes (CNT-FEDs) are ones of the most promising devices which can compete with other technologies such as liquid crystal displays (LCDs). Good picture quality, a low power consumption, a wide work temperature range and a high efficiency of luminescence are the great advantages of that technology. In this work, new and a low-cost method of electrophoretic deposition of CNTs on the ITO-glass slide is presented. Deposition of the light emitting layer was also done by the same method. The Eu³⁺:Y₂O₃ nanocrystalline phosphor prepared by modified Pechini method was used as emitting layer in tested the FED construction. The satisfied light intensity was observed under the vacuum level of about 1 times 10^-5 Tr, and accelerating voltage of 500 V. Application of other rare-earth ions doped nanocrystalline phosphors in CNT-FED is discussed