Novel hybrid light-emitting devices based on MAPbBr3 nanoplatelets:PVK nanocomposites and zinc oxide nanorod arrays

Szu Ping Wang, Chun Kai Chang, Sheng Hsiung Yang, Che Yu Chang, Yu Chiang Chao

研究成果: 雜誌貢獻期刊論文同行評審

8 引文 斯高帕斯(Scopus)


In this research, we demonstrate inverted perovskite light-emitting devices (PeLEDs) based on zinc oxide nanorod arrays (ZnO NAs) as the electron transport layer and methylammonium lead bromide nanoplatelets (MAPbBr3 NPLs) as the emissive material for the first time. The polyethyleneimine ethoxylated (PEIE) was inserted between the ZnO NAs and the MAPbBr3 NPLs layer to reduce the energy barrier and improve the electron injection efficiency. Besides, different weight ratios of poly(N-vinylcarbazole) (PVK) were blended with MAPbBr3 NPLs to make evenly dispersed nanocomposite films, thereby enhancing the performance of devices. Meanwhile, the photoluminescence of MAPbBr3 NPLs:PVK nanocomposite film was increased due to reduced self-quenching and prolonged carrier lifetime. Inverted PeLEDs with the configuration of ITO/PEIE-modified ZnO NAs/MAPbBr3 NPLs:PVK/TFB/Au were fabricated and evaluated, using TFB as the hole transport layer. The current density of the devices containing PVK matrix was significantly suppressed compared to those without PVK. Herein, the best device revealed a max brightness of 495 cd m-2 and a low turn-on voltage of 3.1 V that shows potential use in light-emitting applications.

期刊Materials Research Express
出版狀態已發佈 - 2018 一月

ASJC Scopus subject areas

  • 電子、光磁材料
  • 生物材料
  • 表面、塗料和薄膜
  • 聚合物和塑料
  • 金屬和合金


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