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      Graphene nanowalls in photodetectors

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      Author(s): a , , a , a , a , a
      Publication date (Electronic, pub):
      Publication date (Electronic, collection):
      Journal: RSC Advances
      Publisher: The Royal Society of Chemistry

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          Abstract

          Graphene nanowalls (GNWs) have emerged as a promising material in the field of photodetection, thanks to their exceptional optical, electrical, mechanical, and thermodynamic properties. However, the lack of a comprehensive review in this domain hinders the understanding of GNWs' development and potential applications. This review aims to provide a systematic summary and analysis of the current research status and challenges in GNW-based photodetectors. We begin by outlining the growth mechanisms and methods of GNWs, followed by a discussion on their physical properties. Next, we categorize and analyze the latest research progress in GNW photodetectors, focusing on photovoltaic, photoconductive, and photothermal detectors. Lastly, we offer a summary and outlook, identifying potential challenges and outlining industry development directions. This review serves as a valuable reference for researchers and industry professionals in understanding and exploring the opportunities of GNW materials in photodetection.

          Abstract

          Graphene nanowalls (GNWs) have emerged as a promising material in the field of photodetection, thanks to their exceptional optical, electrical, mechanical, and thermodynamic properties.

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          Photogating in Low Dimensional Photodetectors

          Hehai Fang, Weida Hu (2017)
          Abstract Low dimensional materials including quantum dots, nanowires, 2D materials, and so forth have attracted increasing research interests for electronic and optoelectronic devices in recent years. Photogating, which is usually observed in photodetectors based on low dimensional materials and their hybrid structures, is demonstrated to play an important role. Photogating is considered as a way of conductance modulation through photoinduced gate voltage instead of simply and totally attributing it to trap states. This review first focuses on the gain of photogating and reveals the distinction from conventional photoconductive effect. The trap‐ and hybrid‐induced photogating including their origins, formations, and characteristics are subsequently discussed. Then, the recent progress on trap‐ and hybrid‐induced photogating in low dimensional photodetectors is elaborated. Though a high gain bandwidth product as high as 109 Hz is reported in several cases, a trade‐off between gain and bandwidth has to be made for this type of photogating. The general photogating is put forward according to another three reported studies very recently. General photogating may enable simultaneous high gain and high bandwidth, paving the way to explore novel high‐performance photodetectors.
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            Kohn anomalies and electron-phonon interactions in graphite.

            Belinda Ferrari, M Lazzeri, Francesco A. Mauri … (2004)
            We demonstrate that graphite phonon dispersions have two Kohn anomalies at the Gamma-E(2g) and K-A'1 modes. The anomalies are revealed by two sharp kinks. By an exact analytic derivation, we show that the slope of these kinks is proportional to the square of the electron-phonon coupling (EPC). Thus, we can directly measure the EPC from the experimental dispersions. The Gamma-E(2g) and K-A'1 EPCs are particularly large, while they are negligible for all the other modes at Gamma and K.
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              HgCdTe infrared detector material: history, status and outlook

              A Rogalski (2005)
              Article 0 comments Cited 134 times – based on 0 reviews     Review now
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                Author and article information

                Journal
                Journal ID (nlm-ta): RSC Adv
                Journal ID (iso-abbrev): RSC Adv
                Journal ID (publisher-id): RA
                Journal ID (coden): RSCACL
                Title: RSC Advances
                Publisher: The Royal Society of Chemistry
                ISSN (Electronic): 2046-2069
                Publication date (Electronic, pub): 28 July 2023
                Publication date (Electronic, collection): 26 July 2023
                Publication date PMC-release: 28 July 2023
                Volume: 13
                Issue: 33
                Pages: 22838-22862
                Affiliations
                [a ] Chongqing Institute of Green and Intelligent Technology, Chinese Academy of Sciences Chongqing 400714 P. R. China jyang@ 123456cigit.ac.cn
                Author information
                https://orcid.org/0000-0003-1652-0054
                Article
                Publisher ID: d3ra03104g
                DOI: 10.1039/d3ra03104g
                PMC ID: 10375065
                SO-VID: 4975c942-6638-4125-8b05-a9f5a0e102bc
                Copyright © This journal is © The Royal Society of Chemistry
                History
                Date received : 10 May 2023
                Date accepted : 6 July 2023
                Page count
                Pages: 25
                Funding
                Funded by: National Natural Science Foundation of China, doi 10.13039/501100001809;
                Award ID: NSFC 52175281
                Funded by: Youth Innovation Promotion Association of the Chinese Academy of Sciences, doi 10.13039/501100004739;
                Award ID: 2021382
                Categories
                Subject: Chemistry
                Custom metadata
                pubstatus Paginated Article

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