{"title":"Effects of thin metal/metal oxide composite modification layer on ITO anode in organic light-emitting diodes","authors":"Jing Yi , Ruiting Zhang , Yanfeng Dai , Dongge Ma","doi":"10.1016/j.orgel.2025.107294","DOIUrl":null,"url":null,"abstract":"<div><div>The effects of thin metal film gold or silver (Au and Ag) combined with transition metal oxides (TMOs) V<sub>2</sub>O<sub>5</sub> and MoO<sub>3</sub> used as composite modification layer on ITO anode in organic light-emitting diodes (OLEDs) were investigated and compared. It was found that incorporating the thin metal film (Au or Ag) with V<sub>2</sub>O<sub>5</sub> (MoO<sub>3</sub>) modification layer facilitates to improve the hole injection into the hole transport layer (HTL), thereby enhancing the performance of OLEDs. The device with V<sub>2</sub>O<sub>5</sub> -modified thin metal film on ITO exhibited higher electroluminescent (EL) efficiency compared to that with MoO<sub>3</sub>-modified thin metal film. Specifically, the device with the structure ITO/Au (0.5 nm)/V<sub>2</sub>O<sub>5</sub> (1 nm) achieved a current efficiency of 96 cd/A. The ultraviolet photoelectron spectroscopy (UPS) investigation revealed that ITO/thin metal/V<sub>2</sub>O<sub>5</sub> structure has a higher work function than ITO/thin metal/MoO<sub>3</sub>, which contributes to the improved hole injection.</div></div>","PeriodicalId":399,"journal":{"name":"Organic Electronics","volume":"145 ","pages":"Article 107294"},"PeriodicalIF":2.7000,"publicationDate":"2025-07-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Organic Electronics","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S1566119925001004","RegionNum":4,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"MATERIALS SCIENCE, MULTIDISCIPLINARY","Score":null,"Total":0}
引用次数: 0
Abstract
The effects of thin metal film gold or silver (Au and Ag) combined with transition metal oxides (TMOs) V2O5 and MoO3 used as composite modification layer on ITO anode in organic light-emitting diodes (OLEDs) were investigated and compared. It was found that incorporating the thin metal film (Au or Ag) with V2O5 (MoO3) modification layer facilitates to improve the hole injection into the hole transport layer (HTL), thereby enhancing the performance of OLEDs. The device with V2O5 -modified thin metal film on ITO exhibited higher electroluminescent (EL) efficiency compared to that with MoO3-modified thin metal film. Specifically, the device with the structure ITO/Au (0.5 nm)/V2O5 (1 nm) achieved a current efficiency of 96 cd/A. The ultraviolet photoelectron spectroscopy (UPS) investigation revealed that ITO/thin metal/V2O5 structure has a higher work function than ITO/thin metal/MoO3, which contributes to the improved hole injection.
期刊介绍:
Organic Electronics is a journal whose primary interdisciplinary focus is on materials and phenomena related to organic devices such as light emitting diodes, thin film transistors, photovoltaic cells, sensors, memories, etc.
Papers suitable for publication in this journal cover such topics as photoconductive and electronic properties of organic materials, thin film structures and characterization in the context of organic devices, charge and exciton transport, organic electronic and optoelectronic devices.