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- W3211234540 abstract "With the rapid development of quantum-dot light-emitting diodes (QLEDs), the efficiency and operational stability have not been the bottleneck limiting their commercialization. Consequently, functional layers/materials appropriate for low-cost and time-saving technologies is the next challenge to address. Here a polyethylenimine (PEI) modified smooth sol-gel zinc oxide (s-ZnO) electron-transporting layer is fabricated to replace the conventional ZnO nanoparticles. The PEI can not only improve the wettability of the s-ZnO surface, but also promote charge injection balance. Capacitance and transient electroluminescence spectrum measurements confirm that the charge accumulation within the PEI-containing device is reduced, hence suppressing non-radiative recombination. As a result, the maximum current efficiency and external quantum efficiency of QLED with PEI layer is 14.3 cd/A and 10.34%, respectively, 25% higher than that of n-ZnO ETL based device." @default.
- W3211234540 created "2021-11-08" @default.
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- W3211234540 date "2022-01-01" @default.
- W3211234540 modified "2023-10-06" @default.
- W3211234540 title "Polyethylenimine modified sol-gel ZnO electron-transporting layers for quantum-dot light-emitting diodes" @default.
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- W3211234540 doi "https://doi.org/10.1016/j.orgel.2021.106393" @default.
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