TY - JOUR
T1 - Improving Perovskite Green Quantum Dot Light-Emitting Diode Performance by Hole Interface Buffer Layers
AU - Wang, Qiangqiang
AU - Zhang, Xuanyu
AU - Qian, Lei
AU - Xiang, Chaoyu
N1 - Publisher Copyright:
© 2023 American Chemical Society.
PY - 2023/6/14
Y1 - 2023/6/14
N2 - Perovskite quantum dot light-emitting diodes (QLEDs) are potential candidates for next-generation displays due to their high color purity and wide color gamut. Due to the strong electron-accepting ability of poly[bis(4-phenyl) (2,4,6-trimethylphenyl) amine] (PTAA), quantum dot (QD) films are prone to be charged, which leads to the imbalance of charge injection and the increase of nonradiative recombination, ultimately affecting the performance of the QLEDs. Here, we compared and studied two polymers, poly(methyl methacrylate) (PMMA) and poly(vinyl pyrrolidone) (PVP), as the hole interface buffer layers of QD films, which effectively reduced the defect density, suppressed nonradiative recombination, and greatly improved the efficiency and stability of QLEDs. The devices with PMMA achieved a maximum external quantum efficiency of 20.71%.
AB - Perovskite quantum dot light-emitting diodes (QLEDs) are potential candidates for next-generation displays due to their high color purity and wide color gamut. Due to the strong electron-accepting ability of poly[bis(4-phenyl) (2,4,6-trimethylphenyl) amine] (PTAA), quantum dot (QD) films are prone to be charged, which leads to the imbalance of charge injection and the increase of nonradiative recombination, ultimately affecting the performance of the QLEDs. Here, we compared and studied two polymers, poly(methyl methacrylate) (PMMA) and poly(vinyl pyrrolidone) (PVP), as the hole interface buffer layers of QD films, which effectively reduced the defect density, suppressed nonradiative recombination, and greatly improved the efficiency and stability of QLEDs. The devices with PMMA achieved a maximum external quantum efficiency of 20.71%.
KW - defect passivation
KW - hole interface buffer layer
KW - light-emitting diodes
KW - perovskite
KW - quantum dots
UR - http://www.scopus.com/inward/record.url?scp=85162862952&partnerID=8YFLogxK
U2 - 10.1021/acsami.3c04592
DO - 10.1021/acsami.3c04592
M3 - Article
C2 - 37272407
AN - SCOPUS:85162862952
SN - 1944-8244
VL - 15
SP - 28833
EP - 28839
JO - ACS Applied Materials and Interfaces
JF - ACS Applied Materials and Interfaces
IS - 23
ER -