65‐7: Student Paper: Cd‐Free Quantum‐Dot Light‐Emitting Diode with a Mixed Single Layer to improve the Flatness of Current Efficiency. Issue 1 (28th June 2021)

• Record Type: Journal Article
• Authors: Biswas, Mohammad Mostafizur Rahman; Okada, Hiroyuki
• Is Part Of: Digest of technical papers. Volume 52:Issue 1(2021)
• Page Start: 967
• Page End: 970
• Publication Date: 2021-06-28
• Subjects: Cadmium-free QLED -- Sputtered zinc oxide -- Heterostructure device -- Inverted structure; Information display systems -- Congresses; 621.3815422
• DOI: 10.1002/sdtp.14850
• Languages: English
• ISSNs: 0097-966X

Abstract

Abstract : The performance of the Cd‐free quantum‐dot light emitting diode (QLED) was investigated by mixing the hole and electron transport materials with the emission layer. With an optimized mixing ratio of the hole transport and electron transport materials, the current efficiency of 4.2 cd/A and EQE of 2.2% was achieved using the ZnCuInS/ZnS‐based QLED at yellow emission. Additionally, after optimizing the mixing ratios, the carrier injection is balanced, so the current efficiency is constant for wide current densities.