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      Shining a light on transition metal chalcogenides for sustainable photovoltaics

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          Abstract

          Transition metal chalcogenides are an important family of materials that have received significant interest in recent years as they have the potential for diverse applications ranging from use in electronics to industrial lubricants.

          Abstract

          Transition metal chalcogenides are an important family of materials that have received significant interest in recent years as they have the potential for diverse applications ranging from use in electronics to industrial lubricants. One of their most exciting properties is the ability to generate electricity from incident light. In this perspective we will summarise and highlight the key results and challenges in this area and explain how transition metal chalcogenides are a good choice for future sustainable photovoltaics.

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          Two-dimensional transition metal dichalcogenide nanosheet-based composites.

          Ultrathin two-dimensional (2D) nanosheets of layered transition metal dichalcogenides (TMDs), such as MoS2, TiS2, TaS2, WS2, MoSe2, WSe2, etc., are emerging as a class of key materials in chemistry and electronics due to their intriguing chemical and electronic properties. The ability to prepare these TMD nanosheets in high yield and large scale via various methods has led to increasing studies on their hybridization with other materials to create novel functional composites, aiming to engineer their chemical, physical and electronic properties and thus achieve good performance for some specific applications. In this critical review, we will introduce the recent progress in hybrid nanoarchitectures based on 2D TMD nanosheets. Their synthetic strategies, properties and applications are systematically summarized and discussed, with emphasis on those new appealing structures, properties and functions. In addition, we will also give some perspectives on the challenges and opportunities in this promising research area.
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            The rapid evolution of highly efficient perovskite solar cells

            The latest developments in the efficiency and long-term stability of perovskite solar cells are summarized. Perovskite solar cells (PSCs) have attracted much attention because of their rapid rise to 22% efficiencies. Here, we review the rapid evolution of PSCs as they enter a new phase that could revolutionize the photovoltaic industry. In particular, we describe the properties that make perovskites so remarkable, and the current understanding of the PSC device physics, including the operation of state-of-the-art solar cells with efficiencies above 20%. The extraordinary progress of long-term stability is discussed and we provide an outlook on what the future of PSCs might soon bring the photovoltaic community. Some challenges remain in terms of reducing non-radiative recombination and increasing conductivity of the different device layers, and these will be discussed in depth in this review.
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              The toxicity of cadmium and resulting hazards for human health

              Cadmium (Cd) has been in industrial use for a long period of time. Its serious toxicity moved into scientific focus during the middle of the last century. In this review, we discuss historic and recent developments of toxicological and epidemiological questions, including exposition sources, resorption pathways and organ damage processes.
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                Author and article information

                Journal
                Chem Sci
                Chem Sci
                Chemical Science
                Royal Society of Chemistry
                2041-6520
                2041-6539
                1 June 2017
                13 March 2017
                : 8
                : 6
                : 4177-4187
                Affiliations
                [a ] School of Chemistry , University of Manchester , Oxford Road , Manchester , M13 9PL , UK . Email: paul.o'brien@ 123456manchester.ac.uk
                [b ] School of Materials , University of Manchester , Oxford Road , Manchester , M13 9PL , UK
                Author information
                http://orcid.org/0000-0002-1362-8003
                http://orcid.org/0000-0002-9330-389X
                http://orcid.org/0000-0001-5950-1350
                http://orcid.org/0000-0001-8744-9174
                Article
                c7sc00642j
                10.1039/c7sc00642j
                5468987
                96644a74-6f69-41de-b4a0-13872afaac76
                This journal is © The Royal Society of Chemistry 2017

                This is an Open Access article distributed under the terms of the Creative Commons Attribution 3.0 Unported License ( http://creativecommons.org/licenses/by/3.0/) which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

                History
                : 10 February 2017
                : 13 March 2017
                Categories
                Chemistry

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