Visible and near-infrared electroluminescence from TiO2/p+-Si heterostructured device

Yang Yang; Canxing Wang; Luelue Xiang; Xiangyang Ma; Deren Yang

doi:10.1063/1.4871188

AIP Advances (Apr 2014)

Visible and near-infrared electroluminescence from TiO2/p+-Si heterostructured device

Yang Yang,
Canxing Wang,
Luelue Xiang,
Xiangyang Ma,
Deren Yang

Affiliations

Yang Yang: State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
Canxing Wang: State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
Luelue Xiang: State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
Xiangyang Ma: State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China
Deren Yang: State Key Laboratory of Silicon Materials and Department of Materials Science and Engineering, Zhejiang University, Hangzhou 310027, People's Republic of China

DOI: https://doi.org/10.1063/1.4871188
Journal volume & issue: Vol. 4, no. 4
pp. 047109 – 047109-8

Abstract

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We report on visible and near-infrared (NIR) electroluminescence (EL) from the device based on the TiO2/p+-Si heterostructure, in which the TiO2 film is composed of anatase and rutile phases. As the device is applied with sufficiently high forward bias with the positive voltage connecting to p+-Si, the visible EL peaking at ∼600 nm along with the NIR EL centered at ∼810 nm occur simultaneously. It is proposed that the oxygen vacancies in the anatase TiO2 and Ti3+ defect states in the rutile TiO2 are the responsible centers for the visible and NIR EL, respectively.

Published in AIP Advances

ISSN: 2158-3226 (Online)
Publisher: AIP Publishing LLC
Country of publisher: United States
LCC subjects: Science: Physics
Website: http://aipadvances.aip.org/

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