https://scholars.lib.ntu.edu.tw/handle/123456789/491280
標題: | Filter-free, junctionless structures for color sensing | 作者: | Lin, K.-T. Chen, H.-L. Lai, Y.-S. HSUEN-LI CHEN |
公開日期: | 2016 | 卷: | 8 | 期: | 38 | 起(迄)頁: | 16936-16946 | 來源出版物: | Nanoscale | 摘要: | A simple structure, efficient color splitting, sufficient output of electrical signals, and low power consumption are the important characteristics of contemporary devices for color sensing. In this study, we developed filter-free, junctionless structures that exhibited a superior photo-thermo-electrical response under a low bias voltage and a short response time in milliseconds. Although our compact sensor had a simple single-layer trench-like aluminum (Al) structure, it could perform multiple functions, including light harvesting, color-selective absorption, photo-thermo-electrical transformation, and the ability to collect photoinduced differences in electrical signals. This device exploited near-field surface plasmon resonance and cavity effects to enhance the intensity of the electric field and the color-selective absorption, ultimately resulting in significant current signals in its structured Al film. This strategy significantly simplifies not only the components of the color sensor but also its fabrication; for example, red, green, and blue color detection devices could be prepared simultaneously through a single lithography, etching, and deposition step. With its ability to provide functional filter-free, junctionless structures, this strategy has great potential for the production of devices that operate on different kinds of substrates, thereby bridging various applications of color sensing technologies. © 2016 The Royal Society of Chemistry. |
URI: | https://scholars.lib.ntu.edu.tw/handle/123456789/491280 | DOI: | 10.1039/c6nr04772f | SDG/關鍵字: | Aluminum; Bandpass filters; Electric fields; Energy efficiency; Light absorption; Substrates; Surface plasmon resonance; Electrical response; Electrical signal; Functional filters; Low-power consumption; Selective absorption; Sensing technology; Short response time; Simple structures; Color |
顯示於: | 材料科學與工程學系 |
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