10.1186/2228-5326-3-24

Spectroscopic and electrochromic properties of activated reactive evaporated nano-crystalline V2O5 thin films grown on flexible substrates

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  • Hari Krishna Koduru*1,
  • Hussain Mahammad Obili2,
  • Guillèn Cecilia3,
  1. CNR-IPCF UoS di Cosenza, Licryl Laboratory, and Centro di Eccellenza CEMIF.CAL, Università della Calabria, Rende (Cosenza), 87036, IT
  2. Thin film Laboratory, Department of Physics, Sri Venkateswara University, Tirupati, 517 502, IN
  3. Department of Energy, CIEMAT, Madrid, 28040, ES
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Published in Issue 2013-04-17

How to Cite

Koduru, H. K., Obili, H. M., & Cecilia, G. (2013). Spectroscopic and electrochromic properties of activated reactive evaporated nano-crystalline V2O5 thin films grown on flexible substrates. International Nano Letters, 3(1 (December 2013). https://doi.org/10.1186/2228-5326-3-24
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Abstract

Abstract Vanadium pentoxide (V 2 O 5 ) thin films were grown on indium tin oxide-coated flexible Kapton substrates by home-built activated reactive evaporation technique. Film depositions were carried out at optimised oxygen partial pressure of 1 × 10 −3 Torr and plasma power of 8 W, and we investigated their microstructural and opto-electrochromic properties as a function of substrate temperature. The V 2 O 5 films grown at T s = 473 K exhibited a nano-crystalline nature as evidenced from X-ray diffraction, atomic force microscopy and Raman studies. The nano-crystalline films composed of vertical elliptical-shaped grainy morphology demonstrated a high optical transmittance of 75% with an estimated optical bandgap of 2.38 eV. The dry lithiated nano-crystalline V 2 O 5 films demonstrated an optical modulation of 36.1% with a coloration efficiency value of 26.2 cm 2 /C at a wavelength of 550 nm. As-deposited nano-crystalline V 2 O 5 thin films demonstrated a constant discharge capacity of about 60 μAh cm −2 μm −1 for a few cycles at room temperature in the potential window of 4.0 to 2.5 V.

Keywords

  • Activated reactive evaporation,
  • Kapton flexible substrates,
  • Nano-crystalline V2O5 Thin films,
  • Microstructural,
  • Optical,
  • Electrochromic and electrochemical properties
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References

  1. Cogan et al. (1987) Solar modulation in a-WO3/a-IrO2 and c-KxWO3+(x/2)/a-IrO2 (pp. 371-382) https://doi.org/10.1016/0165-1633(87)90031-1
  2. Anderson et al. (1989) Electrochromic LixWO3/polymer laminate/LiyV2O5 (pp. 3295-3308) https://doi.org/10.1364/AO.28.003295
  3. Lampert et al. (1999) Durability evaluation electrochromic devices: an industry perspective (pp. 449-463) https://doi.org/10.1016/S0927-0248(98)00185-8
  4. Granqvist et al. (2003) Electrochromic coatings and devices: survey of some recent advances (pp. 201-211) https://doi.org/10.1016/S0040-6090(03)00983-0
  5. Somani and Radhakrishnan (2002) Electrochromic materials and devices: present and future (pp. 117-133) https://doi.org/10.1016/S0254-0584(01)00575-2
  6. Lampert (1984) Electrochromic materials and devices for energy efficient windows (pp. 1-27) https://doi.org/10.1016/0165-1633(84)90024-8
  7. Cogan et al. (1989) Optical properties of electrochromic vanadium pentaoxide (pp. 1333-1337) https://doi.org/10.1063/1.344432
  8. Nadkarni and Shirodkar (1983) Experiment and theory for switching in Al/V2O5/Al devices (pp. 115-129) https://doi.org/10.1016/0040-6090(83)90200-6
  9. Lee et al. (2003) Raman spectroscopic studies of amorphous vanadium oxide thin films (pp. 111-116) https://doi.org/10.1016/j.ssi.2003.08.022
  10. Park et al. (2002) Electrochemical properties of vanadium oxide thin film deposited by r.f. sputtering (pp. 229-235) https://doi.org/10.1016/S0167-2738(02)00437-X
  11. Baddour-Hadjean et al. (2009) In situ Raman microspectrometry investigation of electrochemical lithium intercalation into crystalline V2O5 thin films (pp. 6674-6679) https://doi.org/10.1016/j.electacta.2009.06.052
  12. Ramana et al. (1997) Growth and structure of electron beam evaporated V2O5 thin films (pp. 195-199) https://doi.org/10.1016/S0254-0584(97)01914-7
  13. Han et al. (2008) Improved conductivity and mechanism of carrier transport in zinc oxide in with embedded silver layer https://doi.org/10.1063/1.2829788
  14. Srinivasa Rao et al. (2003) Photochromic properties of double layer CdS/MoO3 nano-structured films (pp. 79-86) https://doi.org/10.1016/S0921-5107(03)00078-3
  15. Hari Krishna et al. (2008) Photo- and electrochromic properties of activated reactive evaporated MoO3 thin films grown on flexible substrates (pp. 1-5) https://doi.org/10.1155/2008/217510
  16. Azens et al. (2003) Electrochromic devices on polyester foil (pp. 1-5) https://doi.org/10.1016/j.ssi.2003.08.009
  17. Jayalakshimi et al. (2007) Hydrothermal synthesis of SnO2-V2O5 mixed oxide and electrochemical screening of carbon nano-tubes (CNT), V2O5, V2O5-CNT and SnO2-V2O5-CNT electrodes for super capacitors (pp. 578-583) https://doi.org/10.1016/j.jpowsour.2006.11.025
  18. Hari Krishna et al. (2010) Electrochromic properties of nanocrystalline WO3 thin films grown on flexible substrates by plasma-assisted evaporation technique (pp. 921-929) https://doi.org/10.1007/s00339-010-5681-5
  19. Beydaghyan et al. (2008) Electrochromic and morphological investigation of dry-lithiated nanostructured tungsten trioxide thin films (pp. 1646-1650) https://doi.org/10.1016/j.tsf.2007.05.006
  20. Aita et al. (1986) Optical behaviour of sputter-deposited vanadium pentoxide (pp. 749-753) https://doi.org/10.1063/1.337425
  21. Julien et al. (1995) The growth of V2O5 flash evaporated films (pp. 934-936) https://doi.org/10.1007/BF02427469
  22. Ramana et al. (1998) Influence of oxygen partial pressure on the optical properties of electron beam evaporated vanadium pentaoxide thin films (pp. 101-107) https://doi.org/10.1016/S0925-3467(97)00168-7
  23. Clark (1968) Elsevier
  24. Julien et al. (1997) Raman scattering studies of microcrystalline V6O13 (pp. 319-326) https://doi.org/10.1002/1521-3951(199705)201:1<319::AID-PSSB319>3.0.CO;2-T
  25. Abello et al. (1983) Vibrational spectra and valence force field of crystalline V2O5 (pp. 641-651) https://doi.org/10.1016/0584-8539(83)80040-3
  26. Ramana et al. (2003) Microstructural features of pulsed laser deposited V2O5 thin films (pp. 135-138) https://doi.org/10.1016/S0169-4332(02)01411-3
  27. Fatch et al. (2008) Synthesis and structure relations for reactive magnetron sputtered V2O5 films (pp. 1551-1555) https://doi.org/10.1016/j.surfcoat.2007.07.010
  28. Luo et al. (2010) Impact of substrate temperature on microstructure, electrical and optical properties of sputtered nanocrystalline V2O5 thin films (pp. 145-150) https://doi.org/10.1016/j.vacuum.2010.05.001
  29. Avellaneda and Bulhões (2006) Optical and electrochemical properties of V2O5:Ta sol–gel thin films (pp. 444-451) https://doi.org/10.1016/j.solmat.2005.04.031
  30. Lin et al. (2008) Electrochromic properties of V2O5−z thin films sputtered onto flexible PET/ITO substrates (pp. 290-297) https://doi.org/10.1016/j.ssi.2008.01.054
  31. Ng et al. (2009) Flame spray pyrolyzed vanadium oxide nanoparticles for lithium battery cathodes (pp. 3748-3755) https://doi.org/10.1039/b821389p