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Optical Sensor Based on a Single CdS Nanobelt
In this paper, an optical sensor based on a cadmium sulfide (CdS) nanobelt has been developed. The CdS nanobelt was synthesized by the vapor phase transportation (VPT) method. X-Ray Diffraction (XRD) and Transmission Electron Microscopy (TEM) results revealed that the nanobelt had a hexagonal wurtzi...
Autores principales: | , , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
MDPI
2014
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4029630/ https://www.ncbi.nlm.nih.gov/pubmed/24763211 http://dx.doi.org/10.3390/s140407332 |
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author | Li, Lei Yang, Shuming Han, Feng Wang, Liangjun Zhang, Xiaotong Jiang, Zhuangde Pan, Anlian |
author_facet | Li, Lei Yang, Shuming Han, Feng Wang, Liangjun Zhang, Xiaotong Jiang, Zhuangde Pan, Anlian |
author_sort | Li, Lei |
collection | PubMed |
description | In this paper, an optical sensor based on a cadmium sulfide (CdS) nanobelt has been developed. The CdS nanobelt was synthesized by the vapor phase transportation (VPT) method. X-Ray Diffraction (XRD) and Transmission Electron Microscopy (TEM) results revealed that the nanobelt had a hexagonal wurtzite structure of CdS and presented good crystal quality. A single nanobelt Schottky contact optical sensor was fabricated by the electron beam lithography (EBL) technique, and the device current-voltage results showed back-to-back Schottky diode characteristics. The photosensitivity, dark current and the decay time of the sensor were 4 × 10(4), 31 ms and 0.2 pA, respectively. The high photosensitivity and the short decay time were because of the exponential dependence of photocurrent on the number of the surface charges and the configuration of the back to back Schottky junctions. |
format | Online Article Text |
id | pubmed-4029630 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2014 |
publisher | MDPI |
record_format | MEDLINE/PubMed |
spelling | pubmed-40296302014-05-22 Optical Sensor Based on a Single CdS Nanobelt Li, Lei Yang, Shuming Han, Feng Wang, Liangjun Zhang, Xiaotong Jiang, Zhuangde Pan, Anlian Sensors (Basel) Article In this paper, an optical sensor based on a cadmium sulfide (CdS) nanobelt has been developed. The CdS nanobelt was synthesized by the vapor phase transportation (VPT) method. X-Ray Diffraction (XRD) and Transmission Electron Microscopy (TEM) results revealed that the nanobelt had a hexagonal wurtzite structure of CdS and presented good crystal quality. A single nanobelt Schottky contact optical sensor was fabricated by the electron beam lithography (EBL) technique, and the device current-voltage results showed back-to-back Schottky diode characteristics. The photosensitivity, dark current and the decay time of the sensor were 4 × 10(4), 31 ms and 0.2 pA, respectively. The high photosensitivity and the short decay time were because of the exponential dependence of photocurrent on the number of the surface charges and the configuration of the back to back Schottky junctions. MDPI 2014-04-23 /pmc/articles/PMC4029630/ /pubmed/24763211 http://dx.doi.org/10.3390/s140407332 Text en © 2014 by the authors; licensee MDPI, Basel, Switzerland. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution license (http://creativecommons.org/licenses/by/3.0/). |
spellingShingle | Article Li, Lei Yang, Shuming Han, Feng Wang, Liangjun Zhang, Xiaotong Jiang, Zhuangde Pan, Anlian Optical Sensor Based on a Single CdS Nanobelt |
title | Optical Sensor Based on a Single CdS Nanobelt |
title_full | Optical Sensor Based on a Single CdS Nanobelt |
title_fullStr | Optical Sensor Based on a Single CdS Nanobelt |
title_full_unstemmed | Optical Sensor Based on a Single CdS Nanobelt |
title_short | Optical Sensor Based on a Single CdS Nanobelt |
title_sort | optical sensor based on a single cds nanobelt |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC4029630/ https://www.ncbi.nlm.nih.gov/pubmed/24763211 http://dx.doi.org/10.3390/s140407332 |
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