@article{SisLab2637,
          volume = {32},
          number = {1},
          author = {Kien Cuong Nguyen},
           title = {Photoluminescence and I -V Characteristics of
Blended Conjugated Polymers/ZnO Nanoparticles},
       publisher = {VNU},
         journal = {Journal of Science: Mathematics-Physics},
           pages = {52--60},
            year = {2016},
             url = {https://eprints.uet.vnu.edu.vn/eprints/id/eprint/2637/},
        abstract = {Abstract: The investigation of photoluminescence and current-voltage (I-V) characteristics of the
MEH-PPV/PVK blended polymers doped with ZnO nanoparticles (ZnO NPs). First, PVK polymers were mixed with MEH-PPV in respect to the mass-ratio of 100:15, respectively. And
then the MEH-PPV/PVK composites were doped with ZnO NPs with the mass-ratio of 10 wt\%, 15 wt\% and 20 wt\% of total weight blended polymers. Polymer light-emitting diodes (PLEDs), based on a hybrid composite, having structure of ITO/ MEH-PPV/PVK/ZnO/Al were made by spincoated,and subsequently vacuum-thermally evaporated.
UV-Vis absorption, photoluminescence properties, SEM micrographs of the hybrid compositelayer as well as I -V characteristics of the PLED based on the MEH-PPV/ZnO-and PVK/ZnOheterojunction were investigated. Results obtained show that the turn-on voltage of the polymers/ZnO-based PLED is lower than that of the polymers-based PLED without doped ZnO NPs. This is due to the Auger-assisted energy up-conversion process occurring at the polymers/ZnO-heterojunction that could enhance the luminescence efficiency of the PLED.

Keywords: PLED, photoluminescence efficiency, MEH-PPV, PVK, SEM, spin coating, thermal
vacuum evaporation}
}