Study on work function of modified indium tin oxide and performance of organic electroluminescent devices

Battulga Munkhbat, Bolormaa Gendensuren, Ganbaatar Tumenulzii, Rentsenmyadag Dashzeveg, Sarangerel Davaasambuu, Douglas F. Dyckes, Ganzorig Chimed

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

Abstract

The work function of the indium tin oxide electrode (ITO) modified by a self-assembled monolayer (SAM), which is used as an electrode in organic electroluminescent (EL) devices, was investigated in this study. It is revealed that chemical modification of ITO with p-substituted with different terminal groups (NH2-, Cl-, and CF3-) benzoic acids as a SAMs material with carboxyl binding group is caused to increase the work function of the ITO electrode. Through a self-assembly process, the transmittance of the ITO with a SAM was not changed. The work function change of ITO with various SAM was measured by using cyclic voltammetry. Characteristics of EL devices were increased because the energy barrier was decreased in an interface between the ITO and an organic layer in the EL devices. The correlation of the work function change and the performance of the chemically modified EL devices was estimated.

Original languageEnglish
Title of host publicationCharge Generation/Transport in Organic Semiconductor Materials
Pages25-30
Number of pages6
DOIs
Publication statusPublished - 2011
Externally publishedYes
Event2011 MRS Fall Meeting - Boston, MA, United States
Duration: Nov 28 2011Dec 2 2011

Publication series

NameMaterials Research Society Symposium Proceedings
Volume1402
ISSN (Print)0272-9172

Other

Other2011 MRS Fall Meeting
CountryUnited States
CityBoston, MA
Period11/28/1112/2/11

All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Condensed Matter Physics
  • Mechanics of Materials
  • Mechanical Engineering

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