High-performance Visible and Near-infrared Photodetector Based on Au/Silicon Nanowires Array Schottky Photodiode

doi:10.7517/j.issn.1674-0475.2014.06.532

Imaging Science and Photochemistry ›› 2014, Vol. 32 ›› Issue (6): 532-541.DOI: 10.7517/j.issn.1674-0475.2014.06.532

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High-performance Visible and Near-infrared Photodetector Based on Au/Silicon Nanowires Array Schottky Photodiode

HONG Qingshui^1,2, CAO Yang², SUN Jialin³, WAN Pingyu¹, HE Junhui²

1. College of Science, Beijing University of Chemical Technology, Beijing 100029, P.R.China;
2. Functional Nanomaterials Laboratory, Center for Micro/Nanomaterials and Technology, Technical Institute of Physics and Chemistry, Chinese Academy of Sciences, Beijing 100190, P.R.China;
3. State Key Laboratory of Low-Dimensional Quantum Physics, Department of Physics, Tsinghua University, Beijing 100084, P.R.China

Received:2014-03-29 Revised:2014-05-09 Online:2014-11-15 Published:2014-11-15

Abstract

Abstract:

Self-powered visible and near-infrared photodetector based on Au/silicon nanowires array Schottky photodiode (SPD) was fabricated. The as-fabricated SPD exhibited excellent rectification characteristics with a rectification ratio up to 584 within ±1 V in the dark and significant photovoltaic (PV) effects under visible and near-infrared light illuminations. Photodetection analysis revealed that the SPD was highly sensitive to illumination of 405 nm, 532 nm and 1064 nm with good stability, reproducibility and fast response speed at zero bias voltage. Meanwhile, the SPD could provide a rapid binary-response of positive current to negative current switch upon illumination at a small forward bias. The current work demonstrates that the self-powered Au/silicon nanowires SPD would have a bright application prospect in self-powered optoelectronic systems.

Key words: self-powered, visible and near-infrared detection, Schottky photodiode, silicon nanowires array

HONG Qingshui, CAO Yang, SUN Jialin, WAN Pingyu, HE Junhui. High-performance Visible and Near-infrared Photodetector Based on Au/Silicon Nanowires Array Schottky Photodiode[J]. Imaging Science and Photochemistry, 2014, 32(6): 532-541.

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High-performance Visible and Near-infrared Photodetector Based on Au/Silicon Nanowires Array Schottky Photodiode

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