Substrate-Dependent Differences in the Crystal Structures and Optical Properties of ZnSe Nanowires

Author:

Seo Keumyoung1,Bong Jihye1,Kim Jae-Woo23,Song Yoon-Ho23,Shin Yong Ho4,Kim Yongmin4,Ju Sanghyun1

Affiliation:

1. Department of Physics, Kyonggi University, Suwon, Gyeonggi-do 443-760, Republic of Korea

2. School of Advanced Device Engineering, University of Science & Technology, 217 Gajeong-ro, Yuseong-gu, Daejeon 305-350, Republic of Korea

3. Nano Electron-Source Creative Research Center, Electronics and Telecommunications Research Institute, 218 Gajeong-ro, Yuseong-gu, Daejeon 305-700, Republic of Korea

4. Department of Applied Physics and Institute of Nanoscience and Biotechnology, Dankook University, Yongin 448-701, Republic of Korea

Abstract

The optical and structural properties of ZnSe nanowires directly grown on three different substrates, SiO2, ITO, and graphene, were investigated. ZnSe nanowires grown on graphene and SiO2were found to have cubic structures, while ZnSe nanowires grown on ITO had a mixed cubic and hexagonal structure. The main peaks in the photoluminescence spectra of ZnSe nanowires grown on SiO2, ITO, and graphene were located at 459, 627, and 627/460 nm, respectively. In addition, a field-emission light-emitting device was fabricated using ZnSe nanowires as a phosphor and graphene as an electrode. The device showed a red emission peak with Commission Internationale de L’Eclairage coordinates of (0.621, 0.315).

Funder

National Research Foundation of Korea

Publisher

Hindawi Limited

Subject

General Materials Science

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