Comparing the distribution of the electronic gap of an organic molecule with its photoluminescence spectrum
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Título: | Comparing the distribution of the electronic gap of an organic molecule with its photoluminescence spectrum |
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Autor/es: | Costa Milán, David | Villalvilla, José M. | Díaz-García, María A. | Untiedt, Carlos |
Grupo/s de investigación o GITE: | Grupo de Nanofísica | Física de la Materia Condensada |
Centro, Departamento o Servicio: | Universidad de Alicante. Departamento de Física Aplicada |
Palabras clave: | STM | Organic molecules | Semiconductor gap | Photoluminescence |
Área/s de conocimiento: | Física de la Materia Condensada | Física Aplicada |
Fecha de publicación: | 26-abr-2013 |
Editor: | American Institute of Physics |
Cita bibliográfica: | Applied Physics Letters. 2013, 102(16): 163307. doi:10.1063/1.4803169 |
Resumen: | The electronic gap structure of the organic molecule N,N′-diphenyl-N,N′-bis(3-methylphenyl)-(1,1′-biphenyl)-4,4′-diamine, also known as TPD, has been studied by means of a Scanning Tunneling Microscope (STM) and by Photoluminescence (PL) analysis. Hundreds of current-voltage characteristics measured at different spots of the sample show the typical behavior of a semiconductor. The analysis of the curves allows to construct a gap distribution histogram which reassembles the PL spectrum of this compound. This analysis demonstrates that STM can give relevant information, not only related to the expected value of a semiconductor gap but also on its distribution which affects its physical properties such as its PL. |
Patrocinador/es: | We acknowledge financial support of the Spanish Government (Grant Nos. FIS2010-21883-C02-01, MAT2011-28167-C02-01, and No. CONSOLIDER CSD2007-0010) and Comunidad Valenciana (ACOMP/2012/127 and PROMETEO/2012/011). This research has been partial funded by FEDER funds of the EU. |
URI: | http://hdl.handle.net/10045/33879 |
ISSN: | 0003-6951 (Print) | 1077-3118 (Online) |
DOI: | 10.1063/1.4803169 |
Idioma: | eng |
Tipo: | info:eu-repo/semantics/article |
Derechos: | Copyright 2013 American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics. |
Revisión científica: | si |
Versión del editor: | http://dx.doi.org/10.1063/1.4803169 |
Aparece en las colecciones: | INV - Grupo de Nanofísica - Artículos de Revistas INV - Física de la Materia Condensada - Artículos de Revistas |
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