Jae Ho Kim , Sumin Oh , Chaehyun Park , Yubin Kim , Gyumok Lim , Youngu Lee , Jin Woo Choi , Hyung Woo Lee , Myungkwan Song
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引用次数: 0
Abstract
This study reports novel solution-processed 4-hydroxy-2,2,6,6-tetramethylpiperidin-1-oxyl (TEMPOL)-derivative organic compounds in a widely employed hole-injection/transport poly(3,4-ethylenedioxythiophene):polystyrene sulfonate (PEDOT:PSS) layer. The TEMPOL-derived organic dopants, synthesized via a one-step chemical procedure, exhibited distinctive molecular dipole characteristics and electrical conductivities. The green organic light-emitting diodes (OLEDs) with a 4-benzene sulfonyl-2,2,6,6-tetramethyl-1-piperidenyloxy radical (TBS)-doped PEDOT:PSS layer exhibited a maximum power efficiency (PEmax) of 25.58 lm W−1, maximum external quantum efficiency (EQEmax) of 12.19 %, and maximum current efficiency (CEmax) of 40.85 cd A−1, demonstrating significant improvements compared with the pristine PEDOT:PSS layer-based device. The PEmax (16.18 lm W−1), EQEmax (10.67 %), and CEmax (37.01 cd A−1) were obtained with fiber OLEDs under same conditions. This enhancement in OLED performance can be attributed to the decreased hole-injection barrier at the anode and emissive layer interfaces.
期刊介绍：
This journal is an international medium for the rapid publication of original research papers, short communications and subject reviews dealing with research on and applications of electronic polymers and electronic molecular materials including novel carbon architectures. These functional materials have the properties of metals, semiconductors or magnets and are distinguishable from elemental and alloy/binary metals, semiconductors and magnets.
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