期刊
ACS APPLIED MATERIALS & INTERFACES
卷 11, 期 23, 页码 21069-21077出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.9b04118
关键词
flexible transparent electrodes; graphene; colorless polyimide; organic thin film; operational stability; flexible organic devices
资金
- Nano Material Technology Development Program [2017M3A7B8065377]
- Basic Science Research Program through the National Research Foundation (NRF) of Korea - Ministry of Science, ICT, and Future Planning [2017R1E1A1A01075283, 2018R1A2B2006198]
- National Research Foundation of Korea [2017R1E1A1A01075283, 2018R1A2B2006198] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
A novel flexible transparent electrode (TE) having a trilayer-stacked geometry and high optoelectronic performance and operational stability was fabricated by the spin coating method. The trilayer was composed of an ultrathin graphene (Gr) film sandwiched between a transparent and colorless polyimide (TCPI) layer and a methanesulfonic acid (MSA)-treated poly(3,4 - ethylenedioxythiophene):poly(styrenesulfonate) (PEDOT:PSS) layer containing dimethylsulfoxide and Zonyl fluorosurfactant (designated as MSA-PDZ film). The introduction of solution-processable TCPI enabled the direct formation of high-quality graphene on organic surfaces with a clean interface. Stable doping of graphene with the MSA-PDZ film enabled tuning of the inherent work function and optoelectronic properties of the PEDOT:PSS films, leading to a high figure of merit of -70 in the as-fabricated TEs. Particularly, from multivariate and repetitive harsh environmental tests (T = -50 to 90 degrees C, over 90 RH%), the TCPI/Gr heterostructure exhibited excellent tolerance to mechanical and thermal stresses and gas barrier properties that protected the MSA-PDZ film from exposure to moisture. Owing to the synergetic effect from the TCPI/Gr/MSA-PDZ anode structure, the TCPI/Gr/MSA-PDZ-based polymer light-emitting diodes showed highly improved current and power efficiencies with maxima as high as 20.84 cd/A and 22.92 lm/W, respectively (comparable to those of indium tin oxide based PLEDs), in addition to much enhanced mechanical flexibility.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据