The Influence of Hydrogenation and Oxygen Vacancies on Molybdenum Oxides Work Function and Gap States for Application in Organic Optoelectronics.
Molybdenum oxide is used as a low-resistance anode interfacial layer in applications such as organic light emitting diodes and organic photovoltaics. However, little is known about the correlation between its stoichiometry and electronic properties, such as work function and occupied gap states. In...
| Publicado en: | Journal of the American Chemical Society Vol. 134; no. 39; pp. 16178 - 16188 |
|---|---|
| Autores principales: | , , , , , , , , , , |
| Formato: | Artículo |
| Publicado: |
American Chemical Society
10/3/2012
|
| Materias: | |
| Acceso en línea: | Ver este registro en EBSCOhost |
| fields | @attributes: recordID: 1 pdfLink: plink: https://search.ebscohost.com/login.aspx?direct=true&db=hlh&AN=82330784&site=ehost-live header: @attributes: shortDbName: hlh uiTerm: 82330784 longDbName: Humanities International Complete uiTag: AN controlInfo: bkinfo: jinfo: jid: 00027863 ACS jtl: Journal of the American Chemical Society issn: 00027863 maglogo: N pubinfo: dt: 10/3/2012 vid: 134 iid: 39 pid: 997 pub: American Chemical Society artinfo: ui: 82330784 10.1021/ja3026906 ppf: 16178 ppct: 10 formats: tig: atl: The Influence of Hydrogenation and Oxygen Vacancies on Molybdenum Oxides Work Function and Gap States for Application in Organic Optoelectronics. aug: au: Vasilopoulou, Maria Douvas, Antonios M. Georgiadou, Dimitra G. Palilis, Leonidas C. Kennou, Stella Sygellou, Labrini Soultati, Anastasia Kostis, Ioannis Papadimitropoulos, Giorgos Davazoglou, Dimitris Argitis, Panagiotis affil: Institute of Microelectronics, NCSR Demokritos, Terma Patriarchou Grigoriou, 15310 Aghia Paraskevi, Greece Department of Physics, University of Patras, 26500 Patras, Greece Department of Chemical Engineering, University of Patras, 26500 Patras, Greece Department of Electronics, Technological and Educational Institute of Pireaus, 12244 Aegaleo, Greece su: Molybdenum oxides Hydrogenation Stoichiometry Electron work function Electronic structure Optoelectronics sug: subj: Molybdenum oxides Hydrogenation Stoichiometry Electron work function Electronic structure Optoelectronics ab: Molybdenum oxide is used as a low-resistance anode interfacial layer in applications such as organic light emitting diodes and organic photovoltaics. However, little is known about the correlation between its stoichiometry and electronic properties, such as work function and occupied gap states. In addition, despite the fact that the knowledge of the exact oxide stoichiometry is of paramount importance, few studies have appeared in the literature discussing how this stoichiometry can be controlled to permit the desirable modification of the oxide's electronic structure. This work aims to investigate the beneficial role of hydrogenation (the incorporation of hydrogen within the oxide lattice) versus oxygen vacancy formation in tuning the electronic structure of molybdenum oxides while maintaining their high work function. A large improvement in the operational characteristics of both polymer light emitting devices and bulk heterojunction solar cells incorporating hydrogenated Mo oxides as hole injection/extraction layers was achieved as a result of favorable energy level alignment at the metal oxide/organic interface and enhanced charge transport through the formation of a large density of gap states near the Fermi level. pubtype: Academic Journal doctype: Article src: R language: English refInfo: copyright: @attributes: flag: Y dt: @attributes: year: 2012 holdings: @attributes: islocal: N |
|---|