Stable and efficient pure blue quantum-dot LEDs enabled by inserting an anti-oxidation layer.

ABSTRACT: The efficiency and stability of red and green quantum-dot light-emitting diodes have already met the requirements for commercialization in displays. However, the poor stability of the blue ones, particularly pure blue color, is hindering the commercialization of full-color quantum-dot light-emitting diode technology. Severe hole accumulation at the blue quantum-dot/hole-transport layer interface makes the hole-transport layer prone to oxidation, limiting the device operational lifetime. Here, we propose inserting an anti-oxidation layer (poly(p-phenylene benzobisoxazole)) between this interface to take in some holes from the hole-transport layer, which mitigates the oxidation-induced device degradation, enabling a T₅₀ (time for the luminance decreasing by 50%) of more than 41,00

SUBMITTER: Zhang W 

PROVIDER: S-EPMC10817946 | biostudies-literature | 2024 Jan

REPOSITORIES: biostudies-literature