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Sol-gel synthesized, low-temperature processed, reduced molybdenum peroxides for organic optoelectronics applications

Sol-gel synthesized, low-temperature processed, reduced molybdenum peroxides for organic optoelectronics applications
Sol-gel synthesized, low-temperature processed, reduced molybdenum peroxides for organic optoelectronics applications

Reduced molybdenum peroxides with varying degrees of reduction were synthesized following a modified sol-gel peroxo method and the respective films were employed as anode interfacial layers in organic optoelectronics applications, such as organic light emitting diodes (OLEDs) and organic photovoltaics (OPVs). The degree of reduction was controlled through both the synthesis route and the thermal treatment protocol of the obtained films. The films were thoroughly investigated with a variety of spectroscopic, diffraction, and electron microscopy methods (UV-Vis, FT-IR, XPS, UPS, Raman, XRD, SEM, and TEM). These films were found to be considerably sub-stoichiometric with a relatively high content of hydrogen. When they were used as anode interfacial layers in OLED and OPV devices, high efficiencies and adequate temporal stability were achieved. The enhanced hole injection/extraction properties of the reduced molybdenum peroxide films were attributed to the improved charge transport facilitated through the gap states present in these materials.

2050-7534
6290-6300
Douvas, Antonios M.
2e088659-e1b3-4723-aff9-4dfe385579b5
Vasilopoulou, Maria
aad1381e-d091-4090-8c7c-b74bed22393d
Georgiadou, Dimitra G.
84977176-3678-4fb3-a3dd-2044a49c853b
Soultati, Anastasia
75205fde-50fc-473e-ad72-ab0b3c6b2cb9
Davazoglou, Dimitris
a946cf5d-287a-4734-ba55-b180ab4525ed
Vourdas, Nikolaos
ec93034a-20d9-4d15-b691-084f29601a3e
Giannakopoulos, Konstantinos P.
121b9d69-d992-4b4e-91d6-9ab49fc601b6
Kontos, Athanassios G.
3c90ea2c-3fd8-4a32-98e3-7bf383c6f5e7
Kennou, Stella
7ca6a6bd-6a05-4110-b3da-c8807f798370
Argitis, Panagiotis
ab9c4ea6-3dd2-4e34-935d-81bfb360f358
Douvas, Antonios M.
2e088659-e1b3-4723-aff9-4dfe385579b5
Vasilopoulou, Maria
aad1381e-d091-4090-8c7c-b74bed22393d
Georgiadou, Dimitra G.
84977176-3678-4fb3-a3dd-2044a49c853b
Soultati, Anastasia
75205fde-50fc-473e-ad72-ab0b3c6b2cb9
Davazoglou, Dimitris
a946cf5d-287a-4734-ba55-b180ab4525ed
Vourdas, Nikolaos
ec93034a-20d9-4d15-b691-084f29601a3e
Giannakopoulos, Konstantinos P.
121b9d69-d992-4b4e-91d6-9ab49fc601b6
Kontos, Athanassios G.
3c90ea2c-3fd8-4a32-98e3-7bf383c6f5e7
Kennou, Stella
7ca6a6bd-6a05-4110-b3da-c8807f798370
Argitis, Panagiotis
ab9c4ea6-3dd2-4e34-935d-81bfb360f358

Douvas, Antonios M., Vasilopoulou, Maria, Georgiadou, Dimitra G., Soultati, Anastasia, Davazoglou, Dimitris, Vourdas, Nikolaos, Giannakopoulos, Konstantinos P., Kontos, Athanassios G., Kennou, Stella and Argitis, Panagiotis (2014) Sol-gel synthesized, low-temperature processed, reduced molybdenum peroxides for organic optoelectronics applications. Journal of Materials Chemistry C, 2 (31), 6290-6300. (doi:10.1039/c4tc00301b).

Record type: Article

Abstract

Reduced molybdenum peroxides with varying degrees of reduction were synthesized following a modified sol-gel peroxo method and the respective films were employed as anode interfacial layers in organic optoelectronics applications, such as organic light emitting diodes (OLEDs) and organic photovoltaics (OPVs). The degree of reduction was controlled through both the synthesis route and the thermal treatment protocol of the obtained films. The films were thoroughly investigated with a variety of spectroscopic, diffraction, and electron microscopy methods (UV-Vis, FT-IR, XPS, UPS, Raman, XRD, SEM, and TEM). These films were found to be considerably sub-stoichiometric with a relatively high content of hydrogen. When they were used as anode interfacial layers in OLED and OPV devices, high efficiencies and adequate temporal stability were achieved. The enhanced hole injection/extraction properties of the reduced molybdenum peroxide films were attributed to the improved charge transport facilitated through the gap states present in these materials.

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More information

Accepted/In Press date: 23 May 2014
e-pub ahead of print date: 23 May 2014
Published date: 21 August 2014

Identifiers

Local EPrints ID: 440522
URI: http://eprints.soton.ac.uk/id/eprint/440522
ISSN: 2050-7534
PURE UUID: d5fc7d6a-8418-4e2e-ba34-199841700cd8
ORCID for Dimitra G. Georgiadou: ORCID iD orcid.org/0000-0002-2620-3346

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Date deposited: 06 May 2020 16:31
Last modified: 07 Oct 2020 02:27

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Contributors

Author: Antonios M. Douvas
Author: Maria Vasilopoulou
Author: Anastasia Soultati
Author: Dimitris Davazoglou
Author: Nikolaos Vourdas
Author: Konstantinos P. Giannakopoulos
Author: Athanassios G. Kontos
Author: Stella Kennou
Author: Panagiotis Argitis

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