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Song, Myoung Hoon
Organic Photonics & Optoelectronics Lab
Research Interests
  • Organic optoelectrics, perovskite light-emitting diodes, surface treatment, photonic crystals

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Water-stable polymer hole transport layer in organic and perovskite light-emitting diodes

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Title
Water-stable polymer hole transport layer in organic and perovskite light-emitting diodes
Author
Yu, ZhongkaiHa, Su RyongPark, Jong HyunJung, Eui DaeKim, SeongbeomKim, Jong-ManSong, Myoung HoonLee, SeungjinJeong, Woo HyeonPark, Sung HeumChoi, HyosungLee, Bo Ram
Issue Date
2020-12
Publisher
Elsevier BV
Citation
JOURNAL OF POWER SOURCES, v.478, pp.228810
Abstract
Poly(3,4-ethylenedioxythiophene):poly-styrene sulfonate (PEDOT:PSS) is commonly used as a hole-transport material in optoelectronic devices such as organic and perovskite-based solar cells and light-emitting diodes. Moreover, PEDOT:PSS is suitable for fabricating flexible and roll-to-roll devices by solution processing. However, PEDOT:PSS has hygroscopic properties, and the water molecules it attracts can damage the active layer of devices, leading to reduced device stability. In this study, we develop a water-stable hole transport layer (HTL) in perovskite light-emitting diodes (PeLEDs) and organic light-emitting diodes (OLEDs) via a simple and effective method, which involves the modification of PEDOT:PSS with 2-pentacosa-10,12-diynamidoethylsulfate as a photo-crosslinking agent. Experimental results show that devices with the developed HTL show greater long-term stability than PeLEDs and OLEDs based on pristine PEDOT:PSS.
URI
https://scholarworks.unist.ac.kr/handle/201301/48726
URL
https://www.sciencedirect.com/science/article/pii/S0378775320311149
DOI
10.1016/j.jpowsour.2020.228810
ISSN
0378-7753
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