All-Solution-Based, Low-to-Room-Temperature Fabrication of Position-Controlled Metal-Nanodot-Decorated Semiconductor Nanorods for Enhanced Optoelectronic TransducersClick to copy article linkArticle link copied!
- Hojae JiHojae JiDepartment of Mechanical and Automotive Engineering, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul 01811, Republic of KoreaMore by Hojae Ji
- Hyunji SonHyunji SonDepartment of Mechanical and Automotive Engineering, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul 01811, Republic of KoreaMore by Hyunji Son
- Kwangjun KimKwangjun KimDepartment of Mechanical and Automotive Engineering, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul 01811, Republic of KoreaMore by Kwangjun Kim
- Geonjun ChoiGeonjun ChoiDepartment of Mechanical Engineering, Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of KoreaMore by Geonjun Choi
- Minwook KimMinwook KimDepartment of Mechanical and Automotive Engineering, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul 01811, Republic of KoreaMore by Minwook Kim
- Inhui HanInhui HanDepartment of Mechanical and Automotive Engineering, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul 01811, Republic of KoreaMore by Inhui Han
- Hoon Eui Jeong*Hoon Eui Jeong*Email: [email protected]. Tel.: +82-2-970-9012.Department of Mechanical Engineering, Ulsan National Institute of Science and Technology, Ulsan 44919, Republic of KoreaMore by Hoon Eui Jeong
- Jong G. Ok*Jong G. Ok*Email: [email protected]. Tel.: +82-52-217-2339.Department of Mechanical and Automotive Engineering, Seoul National University of Science and Technology, 232 Gongneung-ro, Nowon-gu, Seoul 01811, Republic of KoreaMore by Jong G. Ok
Abstract
We demonstrate the all-solution-based fabrication of metal-nanodot-decorated semiconductor nanorod structures, with the entire process performable at very low or room temperatures. On the surfaces of semiconducting ZnO nanorods (ZNRs) hydrothermally grown on a solution-processed Ag layer at 90 °C, Ag nanodots are reduced from Ag cations in an ionic solution at room temperature by taking UV-induced electrons from ZNRs. Ag nanodots can be deposited at a specific position (top, bottom, or whole region) of the ZNRs by using a controlled ionic Ag solution coating method. We investigate the UV-assisted room-temperature photoreduction (RTPR) mechanism by focusing on the roles of ZnO and solvent. We further examine that the size, density, and spatial distribution of Ag nanodots can be controlled by regulating the concentration of the ionic Ag solution and RTPR time. The resulting hybrid Ag/ZNR architecture, processable on a large-area flexible substrate, exhibits significantly enhanced photocurrent level, responsivity, and selectivity for the incident UV light due to the localized surface plasmon resonance of the Ag nanodots and rapid electron transfer across the Ag/ZnO interface. Our all-solution-based room-temperature approach offers an environmentally sustainable, low-cost, and scalable method for the design and fabrication of metal-nanodot-decorated semiconductor nanostructures applicable to optoelectronic transducers and many other applications.
Cited By
This article has not yet been cited by other publications.
Article Views
Altmetric
Citations
Article Views are the COUNTER-compliant sum of full text article downloads since November 2008 (both PDF and HTML) across all institutions and individuals. These metrics are regularly updated to reflect usage leading up to the last few days.
Citations are the number of other articles citing this article, calculated by Crossref and updated daily. Find more information about Crossref citation counts.
The Altmetric Attention Score is a quantitative measure of the attention that a research article has received online. Clicking on the donut icon will load a page at altmetric.com with additional details about the score and the social media presence for the given article. Find more information on the Altmetric Attention Score and how the score is calculated.