Graphene and Mobile Ions: The Key to All-Plastic, Solution-Processed Light-Emitting Devices

submitted by: NateRobinson
The emerging field of “organic” or “plastic” electronics has brought low-voltage, ultrathin, and energy-efficient lighting and displays to market as organic light-emitting diode (OLED) televisions and displays in cameras and mobile phones. Despite using carbon-based materials as the light-emitting layer, previous efficient organic electronic light-emitting devices have required at least one metal electrode. Here, we utilize chemically derived graphene for the transparent cathode in...
Authors: Ludvig Edman, Manish Chhowalla, Goki Eda, Hisato Yamaguchi, Piotr Matyba, Nathaniel d. Robinson

Supercapacitors Based on Flexible Graphene/Polyaniline Nanofiber Composite Films

submitted by: qwu
Composite films of chemically converted graphene (CCG) and polyaniline nanofibers (PANI-NFs) were prepared by vacuum filtration the mixed dispersions of both components. The composite film has a layered structure, and PANI-NFs are sandwiched between CCG layers. Furthermore, it is mechanically stable and has a high flexibility; thus, it can be bent into large angles or be shaped into various desired structures. The conductivity of the composite film containing 44% CCG (550 S/m) is about 10...
Authors: Qiong Wu, Yuxi Xu, Zhiyi Yao, Anran Liu, Gaoquan Shi