Anomalous temperature coefficient of resistance in graphene nanowalls/polymer films and applications in infrared photodetectors
Graphene nanowalls (GNWs) exhibit outstanding optoelectronic properties due to their peculiar structure, which makes them a great potential in infrared (IR) detection. Herein, a novel IR detector that is composed of polydimethylsiloxane (PDMS) and designed based on GNWs is demonstrated. Such detecto...
| Main Authors: | , , , , , , , , , |
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| Format: | Article |
| Language: | English |
| Published: |
De Gruyter
2018-05-01
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| Series: | Nanophotonics |
| Subjects: | |
| Online Access: | https://doi.org/10.1515/nanoph-2017-0135 |
| _version_ | 1818716543441174528 |
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| author | Zhang Hui Zhao Kangyi Cui Songya Yang Jun Zhou Dahua Tang Linlong Shen Jun Feng Shuanglong Zhang Weiguo Fu Yongqi |
| author_facet | Zhang Hui Zhao Kangyi Cui Songya Yang Jun Zhou Dahua Tang Linlong Shen Jun Feng Shuanglong Zhang Weiguo Fu Yongqi |
| author_sort | Zhang Hui |
| collection | DOAJ |
| description | Graphene nanowalls (GNWs) exhibit outstanding optoelectronic properties due to their peculiar structure, which makes them a great potential in infrared (IR) detection. Herein, a novel IR detector that is composed of polydimethylsiloxane (PDMS) and designed based on GNWs is demonstrated. Such detector possesses an anomalous temperature coefficient of resistance of 180% K−1 and a relatively high change rate of current (up to 16%) under IR radiation from the human body. It primarily attributes to the ultra-high IR absorption of the GNWs and large coefficient of thermal expansion of PDMS. In addition, the GNW/PDMS device possesses excellent detection performance in the IR region with a responsivity of ~1.15 mA W−1. The calculated detectivity can reach 1.07×108 cm Hz1/2 W−1, which is one or two orders of magnitude larger than that of the traditional carbon-based IR detectors. The significant performance indicates that the GNW/PDMS-based devices reveal a novel design concept and promising applications for the future new-generation IR photodetectors. |
| first_indexed | 2024-12-17T19:20:56Z |
| format | Article |
| id | doaj.art-76445dad7921450788c56c7932b54cd9 |
| institution | Directory Open Access Journal |
| issn | 2192-8606 2192-8614 |
| language | English |
| last_indexed | 2024-12-17T19:20:56Z |
| publishDate | 2018-05-01 |
| publisher | De Gruyter |
| record_format | Article |
| series | Nanophotonics |
| spelling | doaj.art-76445dad7921450788c56c7932b54cd92022-12-21T21:35:32ZengDe GruyterNanophotonics2192-86062192-86142018-05-017588389210.1515/nanoph-2017-0135nanoph-2017-0135Anomalous temperature coefficient of resistance in graphene nanowalls/polymer films and applications in infrared photodetectorsZhang Hui0Zhao Kangyi1Cui Songya2Yang Jun3Zhou Dahua4Tang Linlong5Shen Jun6Feng Shuanglong7Zhang Weiguo8Fu Yongqi9School of Physics, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, P.R. ChinaSchool of Physics, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, P.R. ChinaSchool of Physics, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, P.R. ChinaChongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, P.R. ChinaChongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, P.R. ChinaChongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, P.R. ChinaChongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, P.R. ChinaChongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, P.R. ChinaChongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences, Chongqing 400714, P.R. ChinaSchool of Physics, University of Electronic Science and Technology of China, Chengdu, Sichuan 610054, P.R. ChinaGraphene nanowalls (GNWs) exhibit outstanding optoelectronic properties due to their peculiar structure, which makes them a great potential in infrared (IR) detection. Herein, a novel IR detector that is composed of polydimethylsiloxane (PDMS) and designed based on GNWs is demonstrated. Such detector possesses an anomalous temperature coefficient of resistance of 180% K−1 and a relatively high change rate of current (up to 16%) under IR radiation from the human body. It primarily attributes to the ultra-high IR absorption of the GNWs and large coefficient of thermal expansion of PDMS. In addition, the GNW/PDMS device possesses excellent detection performance in the IR region with a responsivity of ~1.15 mA W−1. The calculated detectivity can reach 1.07×108 cm Hz1/2 W−1, which is one or two orders of magnitude larger than that of the traditional carbon-based IR detectors. The significant performance indicates that the GNW/PDMS-based devices reveal a novel design concept and promising applications for the future new-generation IR photodetectors.https://doi.org/10.1515/nanoph-2017-0135graphene nanowallsirpolymertcrthermal detectors |
| spellingShingle | Zhang Hui Zhao Kangyi Cui Songya Yang Jun Zhou Dahua Tang Linlong Shen Jun Feng Shuanglong Zhang Weiguo Fu Yongqi Anomalous temperature coefficient of resistance in graphene nanowalls/polymer films and applications in infrared photodetectors Nanophotonics graphene nanowalls ir polymer tcr thermal detectors |
| title | Anomalous temperature coefficient of resistance in graphene nanowalls/polymer films and applications in infrared photodetectors |
| title_full | Anomalous temperature coefficient of resistance in graphene nanowalls/polymer films and applications in infrared photodetectors |
| title_fullStr | Anomalous temperature coefficient of resistance in graphene nanowalls/polymer films and applications in infrared photodetectors |
| title_full_unstemmed | Anomalous temperature coefficient of resistance in graphene nanowalls/polymer films and applications in infrared photodetectors |
| title_short | Anomalous temperature coefficient of resistance in graphene nanowalls/polymer films and applications in infrared photodetectors |
| title_sort | anomalous temperature coefficient of resistance in graphene nanowalls polymer films and applications in infrared photodetectors |
| topic | graphene nanowalls ir polymer tcr thermal detectors |
| url | https://doi.org/10.1515/nanoph-2017-0135 |
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