| abstract |
The invention discloses a method for preparing cesium-lead-bromine quantum dot electroluminescence device by conjugated molecular ligand solid-liquid exchange method. Firstly, the thermal injection method is used to synthesize the cesium-lead-bromine quantum dot, and the quantum dot is purified by methyl acetate. ; then in the oxidation of poly(3,4-ethylenedioxythiophene, poly[bis(4-phenyl)(4-butylphenyl)amine]chlorobenzene and poly(9-vinylcarbazole)chlorobenzene) covered with poly(3,4-ethylenedioxythiophene) On the indium tin, the purified cesium lead bromine quantum dots are then spin-coated, and the solid-liquid ligand exchange is carried out; imidazol-2-yl)benzene, lithium fluoride and aluminum. The invention can produce cesium-lead-bromine quantum dot electroluminescence diode with high brightness, high efficiency and low opening voltage. |