Investigation of the distribution of localised and extended states in amorphous MoOx
Source abstract
Abstract
Amorphous films of MoOx have both structural disorder and also chemical disorder for x<3. We have shown that this disorder can introduce localised states in thin films and have shown that the existence of localised states can be deduced from the XPS data that identifies the relevant occupations of different ionisation states of the Mo ions. This effect, which depends on both the oxygen concentration and the method of fabrication, is more important than electron-electron interactions in producing the observed localisation. We have also shown that magneto-optical dichroism is also a powerful technique to determine the energy distribution of localised and delocalised states.
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Research context
OpenAlex topics: Transition Metal Oxide Nanomaterials · Thin-Film Transistor Technologies · Organic Light-Emitting Diodes Research
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
Affiliations
Department of Physics and Astronomy, University of Sheffield 1 , Sheffield S3 7RH, United Kingdom
Department of General Science, Salahaddin University 2 , Erbil, Iraq
Key Laboratory of Beam Technology and Material Modification of Ministry of Education, College of Nuclear Science and Technology, Beijing Normal University 3 , Beijing 100875, P.R. China
Department of Physics and Astronomy, King Saud University 4 , Riyadh 11451, Saudi Arabia
Funding
National Natural Science Foundation of China · Engineering and Physical Sciences Research Council
References (35)
Show source-provided references
1. Metal oxides as a hole-injecting layer for an organic electroluminescent device10.1088/0022-3727/29/11/004 ↗
2. Appl. Phys. Lett. · 2006 · 88 · 07350810.1063/1.2174093 ↗
3. Advanced Materials · 2009 · 21 · 145010.1002/adma.200802893 ↗
4. Nature Mat. · 2012 · 11 · 7610.1038/nmat3159 ↗
5. Adv. Mater. · 2012 · 24 · 540810.1002/adma.201201630 ↗
6. Adv. Funct. Mater. · 2011 · 21 · 148910.1002/adfm.201002171 ↗
7. J. Mater. Chem. A · 2014 · 2 · 173810.1039/c3ta13975a ↗
8. Adv. Mater. · 2011 · 23 · 222610.1002/adma.201100038 ↗
9. Appl. Phys. Lett. · 2012 · 100 · 013313
10. Adv. Energy Mat. · 2013 · 3 · 90310.1002/aenm.201200886 ↗
11. J. Mater. Chem. A · 2014 · 2 · 1239710.1039/c4ta02137a ↗
12. Nano Lett. · 2014 · 14 · 96710.1021/nl404389u ↗
13. J. Phys. Chem. C · 2010 · 114 · 463610.1021/jp9093172 ↗
14. Czech. J. Phys. · 1967 · 17 · 30410.1007/bf01691621 ↗
15. Phys. Chem. Chem. Phys · 2005 · 7 · 381910.1039/b511044k ↗
16. Phys. Rev. · 1958 · 109 · 149210.1103/physrev.109.1492 ↗
17. Proc. Roy. Soc. Ser. A · 1963 · 276 · 23810.1098/rspa.1963.0204 ↗
18. Hubbard · Proc. Roy. Soc. Ser. A · 1964 · 277 · 23710.1098/rspa.1964.0019 ↗
19. Phys. Rev. B · 2010 · 82 · 04511410.1103/physrevb.82.045114 ↗
20. Surface Science · 2001 · 482-485 · 2994
21. J. Phys. Chem. · 1991 · 95 · 703710.1021/j100171a058 ↗
22. J. Appl. Phys. · 2005 · 97 · 08353910.1063/1.1868852 ↗
23. Appl. Phys. Express · 2013 · 6 · 09570110.7567/apex.6.095701 ↗
24. J. Griffin, “Transition metal oxides and their use as hole extraction materials in organic photovoltaic devices,” PhD thesis. University of Sheffield (2014).
25. J. Am. Chem. Soc. · 2012 · 134 · 1617810.1021/ja3026906 ↗
26. Jap. J. of Appl. Phys. · 1981 · 20 · 240310.1143/jjap.20.2403 ↗
27. J. Mag. Magn. Mater. · 1997 · 175 · 5310.1016/s0304-8853(97)00227-8 ↗
28. J. Phys. D: Appl. Phys. · 2015 · 48 · 25550210.1088/0022-3727/48/25/255502 ↗
29. 2015
30. J. Phys. Chem. · 1993 · 97 · 1102010.1021/j100144a020 ↗
31. Phys. Rev. B · 1974 · 10 · 222610.1103/physrevb.10.2226 ↗
32. Phys. Rev. B · 1978 · 18 · 687210.1103/physrevb.18.6872 ↗
33. Phys. Rev. B · 1975 · 12 · 256210.1103/physrevb.12.2562 ↗
34. Phys. Stat. Sol. (A) · 2008 · 205 · 162510.1002/pssa.200824007 ↗
35. J. Appl. Phys. · 2005 · 97 · 10370710.1063/1.1896097 ↗