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Strong adhesion and high optoelectronic performance hybrid graphene/carbon nanotubes transparent conductive films for green-light OLED devices
Surfaces and Interfaces ( IF 5.7 ) Pub Date : 2021-04-22 , DOI: 10.1016/j.surfin.2021.101137
Tao Wang , Li-Chao Jing , Zelong Bao , Pengfei Qian , Wenming Geng , Anita Sagadevan Ethiraj , Wen-Hao Geng , Lvyun Chen , Qingxia Zhu , Hong-Zhang Geng

Carbon nanotubes (CNTs) and graphene (Gr) are promising materials for flexible transparent conductive films (TCFs) in optoelectronic application because of their exceptional electrical, optical, and mechanical properties. Here, high-quality graphene nanosheets were synthesized by the one-step green method which using natural polyphenols-gallic acid (GA) as the exfoliation medium through high-pressure homogenization; besides, GA molecules can also be used as a non-covalent modifier to obtain GA modified CNTs (GCNTs). Then, the Au decorated Gr/GCNT-PET (Au-Gr/GCNT-PET) TCFs were obtained by a simple spray-coating process. The TCFs exhibited an excellent optoelectronic performance (Rs = 45.6 Ω/sq., T = ca. 80% at 550 nm), relatively flat surface (roughness = 12.43 nm), good bending resistance (the ΔR Au-Gr/GCNT-PET TCF/R0 was 0.07 after 1000 times bending tests) and strong adhesion (the fT of all Au-Gr/GCNT PET films was higher than 0.8). Finally, the Au-Gr/GCNT-PET films were used as an anode to prepare flexible green-light OLED devices; the maximum luminance of the Au-Gr/GCNT-PET device was 6554.1 cd/m2 at 15V, and the maximum current efficiency was 4.03 cd/A. It confirmed that this type of TCFs has considerable potential application in photovoltaic devices.



中文翻译:

绿光OLED器件具有强附着力和高光电性能的石墨烯/碳纳米管混合透明导电膜

碳纳米管(CNTs)和石墨烯(Gr)由于其卓越的电,光和机械性能,在光电应用中是用于柔性透明导电膜(TCF)的有前途的材料。在这里,以天然多酚-没食子酸(GA)为剥离介质,通过高压均质化的一步绿法合成了高质量的石墨烯纳米片。此外,GA分子也可以用作非共价改性剂以获得GA改性的CNT(GCNT)。然后,通过简单的喷涂工艺获得金装饰的Gr / GCNT-PET(Au-Gr / GCNT-PET)TCF。TCF具有出色的光电性能(Rs  = 45.6Ω / sq。,T =约。在550nm处80%),相对平坦的表面(粗糙度= 12.43纳米),良好的耐弯曲性(的ΔR的Au-GR / GCNT-PET TCF / R 0为0.07 1000之后次弯曲试验)和附着力强(在˚F Ť的所有Au-Gr / GCNT PET薄膜均高于0.8)。最后,以Au-Gr / GCNT-PET薄膜为阳极制备柔性的绿色OLED器件。在15V下,Au-Gr / GCNT-PET器件的最大亮度为6554.1cd / m 2,最大电流效率为4.03cd / A。已经证实,这种类型的TCF在光伏器件中具有相当大的潜在应用。

更新日期:2021-05-02
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