Popis: |
We used the graphene oxide (GO) as the hole transport layer (HTL) in polymer light emitting diode (PLED). Driving voltage and current efficiency of device with GO layer are 7.2 V and 5.2 cd/A, respectively. And those of device with PEDOT:PSS HIL are 6.1 V and 7.5cd/A, respectively. The driving voltage and efficiency of PLED with GO layer are much better than those without HIL. Because of its inorganic and neutrality unlike PEDOT:PSS, the PLED using a GO layer can be more stable compared to conventional PLED with PEDOT:PSS. |