Lifetime elongation of quantum-dot light-emitting diodes by inhibiting the degradation of hole transport layer
Year: 2021
Type: article
Abstract: -(4-secbutylphenyl))-diphenylamine)] (TFB) hole-transporting layer and also confined the electron in the QD-emitting layer. Although the TFB/PVK HTL structure is a well-known pair to enhance the device performance, its detailed mechanisms were rarely mentioned, especially for relative operational lifetime issues. Herein, a new insight behind operational lifetime elongation of QDLED is disclosed through various fundamental experiments including steady-state photoluminescence, transient electroluminescence and single-carrier only devices. Evidently, other than QD degradation, this study found that the other crucial factor that decreased the device lifetime was TFB-HTL degradation using steady-state photoluminescence and transient electroluminescence analyses. The PVK electron-only device exhibited a stable voltage value when it was driven by fixed current, which also affirmed that PVK has excellent electron-stability characteristics.
Source: RSC Advances
DOI: 10.1039/d1ra03310g
Authors: Bo-Yen Lin, Wen-Chen Ding, Chia-Hsun Chen, Ya-Pei Kuo, Jiun-Haw Lee, Chun-Yu Lee, Tien-Lung Chiu
Language: English
Subfield: Materials Chemistry
Field: Materials Science
Domain: Physical Sciences
Open Access status: gold
Estimated APC paid: $1,042
Awards: Device Design and Physics for High Efficiency and Long Operational Lifetime Blue Phosphorescent Oled, Synthesis and Studies High-Triplet-Energy Materials for Blue Oleds, G292057478, Time Resolved Photoluminescence and Electroluminescence Observation Applied to Analyze the Mechanism of High Efficiency and Long Lifetime Blue Organic Light Emitting Materials and Diodes, Effects of Molecular Stacking of Small-Molecule Organic Thin Film on Carrier and Exciton Dynamics, G3757253491, Development in Blue Organic Guest and Host Molecular, and Their Devices with Commercialized Potential( I ), G434337789, G4438741546, Material and Device Development for Ultrahigh Luminescence and Low Efficiency Roll-off Hybrid White Organic Light Emitting Diode(1/2), Development in Blue Organic Guest and Host Molecular, and Their Devices with Commercialized Potential( II ), The Transient Photoluminescence and Electroluminescence Study on High Efficiency and Long Lifetime Organic Materials and Devices, G7515336703, Heavy metal free emitters for new-generation light sources, G8735364383, Heavy metal free emitters for new-generation light sources
OpenAlex ID: W3170528126