Solution-Processable Graphene Oxide as an Efficient Hole Injection Layer   for High Luminance Organic Light-Emitting Diodes
  The application of solution-processable graphene oxide (GO) as hole injection layer in organic light-emitting diodes (OLEDs) is demonstrated. High luminance of over 53,000 cd m-2 is obtained at only 10 V. The results will unlock a route of applying GO in flexible OLEDs and other electrode applications. 
Shengwei Shi, Veera Sadhu, Reda Moubah, Guy Schmerber, Qinye Bao and   S. Ravi P. Silva
cond-mat.mtrl-sci