Utilize este identificador para referenciar este registo:
https://hdl.handle.net/1822/24485
Título: | Strong light-matter interactions in heterostructures of atomically thin films |
Autor(es): | Britnell, Líam Ribeiro, R. M. Eckmann, A. Jalil, R. Belle, B. D. Mishchenko, A. Kim, Y.-J. Gorbachev, R. V. Georgiou, T. Morozov, S. V. Grigorenko, A. N. Geim, A. K. Casiraghi, C. Castro Neto, A. H. Novoselov, K. S. |
Data: | 13-Jun-2013 |
Editora: | American Association for the Advancement of Science |
Revista: | Science |
Citação: | Science 340, 1311 (2013) |
Resumo(s): | The isolation of various two-dimensional (2D) materials, and the possibility to combine them in vertical stacks, has created a new paradigm in materials science: heterostructures based on 2D crystals. Such a concept has already proven fruitful for a number of electronic applications in the area of ultrathin and flexible devices. Here we expand the range of such structures to photoactive ones by utilizing semiconducting transition metal dichalcogenides (TMDC)/graphene stacks. Van Hove singularities in the electronic density of states of TMDC guarantees enhanced light-matter interactions, leading to enhanced photon absorption and electron-hole creation (which are collected in transparent graphene electrodes). This allows development of extremely efficient flexible photovoltaic devices with photo-responsivity above 0.1 A/W (corresponding to an external quantum efficiency of above 30%). |
Tipo: | Artigo |
URI: | https://hdl.handle.net/1822/24485 |
DOI: | 10.1126/science.1235547 |
ISSN: | 0036-8075 |
Versão da editora: | http://www.sciencemag.org/content/340/6138/1311.full.html |
Arbitragem científica: | yes |
Acesso: | Acesso aberto |
Aparece nas coleções: | CDF - CEP - Artigos/Papers (with refereeing) |
Ficheiros deste registo:
Ficheiro | Descrição | Tamanho | Formato | |
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Science_130426.doc | Documento principal | 5,17 MB | Microsoft Word | Ver/Abrir |