High efficiency polymer light-emitting diodes using ternary electron injection layers

Ten Chin Wen, Kai Wei Tsai, Jiun Yun Jan, Tzung Fang Guo

Research output: Chapter in Book/Report/Conference proceedingConference contribution


The high efficiency of polymer light-emitting diodes (PLED) with ternary electron injection layers (EILs) including tetraoctylammonium bromide (TOAB), poly (vinylpyrrolidone) (PVP) and polyethylenimine (PEIE) to comprise PEIE-PVP-TOAB (E-P-T) EIL that has been achieved and well-studied via mixture design. In the unary system, TOAB can construct interfacial dipole via self-assembly crystallization atop various conjugated polymer surfaces to elevate the vacuum level of cathode. When employing three EILs as ternary system, the electrical property of PLED was further improved. The optimum luminescence efficiency respectively are 13.4 cd/A and 13.5 cd/A for T-P-D and E-P-T based PLED. In the ternary system (E-P-T), PEIE, PVP, and TOAB respectively provides electron injection, hole blocking, and polymer intersecting in the ternary based devices. The intersecting between PEIE and PVP by TOAB was evidenced by roughness change from AFM images.

Original languageEnglish
Title of host publicationOrganic Photonic Materials and Devices XVIII
EditorsFrancois Kajzar, Christopher E. Tabor, Toshikuni Kaino, Yasuhiro Koike
ISBN (Electronic)9781628419801
Publication statusPublished - 2016
EventOrganic Photonic Materials and Devices XVIII - San Francisco, United States
Duration: 2016 Feb 152016 Feb 17

Publication series

NameProceedings of SPIE - The International Society for Optical Engineering
ISSN (Print)0277-786X
ISSN (Electronic)1996-756X


OtherOrganic Photonic Materials and Devices XVIII
Country/TerritoryUnited States
CitySan Francisco

All Science Journal Classification (ASJC) codes

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Computer Science Applications
  • Applied Mathematics
  • Electrical and Electronic Engineering


Dive into the research topics of 'High efficiency polymer light-emitting diodes using ternary electron injection layers'. Together they form a unique fingerprint.

Cite this