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Improved Electrical and Optical Properties of ITO/Ag/ITO Films by Using Electron Beam Irradiation and Their Application to Ultraviolet Light-Emitting Diode as Highly Transparent p-Type Electrodes

Authors :
Younghun Jo
Joon Seop Kwak
Moo-Jin Park
Hong-Gun Kim
C.H. Hong
Source :
Journal of Nanoscience and Nanotechnology. 12:4163-4167
Publication Year :
2012
Publisher :
American Scientific Publishers, 2012.

Abstract

We have investigated the effect of insertion of a Ag layer in ITO film as well as electron beam irradiation to the multilayer films on the electrical and optical properties of the ITO-based multilayer deposited by magnetron sputtering method at room temperature. Inserting a very thin Ag layer between ITO layers resulted in a significant decrease in sheet resistance and increased the optical band gap of the ITO/Ag/ITO multilayer to 4.35 eV, followed by a high transparency of approximately 80% at a wavelength of 375 nm. We have also fabricated ultraviolet light-emitting diodes (LED) by using the ITO/Ag/ITO p-type electrode with/without electron beam irradiation. The results show that the UV-LEDs having ITO/Ag/ITO p-electrode with electron beam irradiation produced 19% higher optical output power due to the low absorption of light in the p-type electrode.

Details

ISSN :
15334899 and 15334880
Volume :
12
Database :
OpenAIRE
Journal :
Journal of Nanoscience and Nanotechnology
Accession number :
edsair.doi.dedup.....be8e64d2688936ff1717477c6361265e