Enhanced performance of flexible quantum dot light-emitting diodes using a low-temperature processed PTAA hole transport layer.

ABSTRACT: Low-temperature processing is important for improving the stability and performance of flexible quantum dot light-emitting diodes (QLEDs). In this study, QLEDs were fabricated using poly[bis(4-phenyl) (2,4,6-trimethylphenyl)amine] (PTAA) as a suitable hole transport layer (HTL) material owing to its low-temperature processability and vanadium oxide as the low-temperature solution-processable hole injection layer material. The maximum luminance and highest current efficiency of the QLEDs on a glass substrate with an optimal PTAA HTL was 8.9 × 10⁴ Cd/m² and 15.9 Cd/A, respectively, which was comparable to that of conventional devices. The QLEDs on a flexible substrate showed a maximum luminance of 5.4 × 10⁴ Cd/m² and highest current efficiency of 5

SUBMITTER: Ha HJ 

PROVIDER: S-EPMC9992373 | biostudies-literature | 2023 Mar

REPOSITORIES: biostudies-literature