Influence of surface passivation on perovskite CsPbBr1.2I1.8 quantum dots and application of high purity red light-emitting diodes
نویسندگان
چکیده
In this work, trioctylphosphine oxide (TOPO) ligand is employed to improve the quality of CsPbBr1.2I1.8 quantum dots (QDs) films. Lead nitrate (Pb(NO3)2) also used passivate surface The study and passivation on luminous efficiency red light-emitting diode (LED) discussed. QDs films co-doped with TOPO Pb(NO3)2 can effectively performance LEDs due reduction non-radiation recombination carriers smooth morphology in active layer, thus improving injection transportation capabilities carriers. As a result, highest luminosity current are 502.7 cd/m2 0.175 cd/A, respectively.
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ژورنال
عنوان ژورنال: Journal of Alloys and Compounds
سال: 2022
ISSN: ['0925-8388', '1873-4669']
DOI: https://doi.org/10.1016/j.jallcom.2021.162140