TY - JOUR
T1 - Fe doping effect of vanadium oxide films for enhanced switching electrochromic performances
AU - Bae, Ju Won
AU - Koo, Bon Ryul
AU - Ahn, Hyo Jin
N1 - Publisher Copyright:
© 2019 Elsevier Ltd and Techna Group S.r.l.
PY - 2019/4/15
Y1 - 2019/4/15
N2 - In the present study, Fe-doped V 2 O 5 films showing impressive electrochromic (EC) performance were developed using the sol-gel spin-coating method. To confirm the optimized Fe-doping effect on the V 2 O 5 films for the EC performance, we adjusted the Fe atomic percentages to 0.0, 0.5, 1.0, and 1.5 at%, respectively. With the effect of Fe doping on the V 2 O 5 films, the obtained films resulted in the formation of the oxygen vacancies. As the result, when the optimum Fe atomic percentage was 1.0 at%, the enhanced switching speeds (3.7 s for the bleaching speed and 2.0 s for the coloration speed) and enhanced coloration efficiency value (47.3 cm 2 /C) compared to the other films were implemented. This can be attributed to the improved electrical conductivity and Li + diffusion coefficient that led to efficient generation of the EC reaction activity and narrowing the optical bandgap at the coloration state to increase transmittance modulation. Therefore, this unique film can be a promising EC material to improve the performance for the EC devices.
AB - In the present study, Fe-doped V 2 O 5 films showing impressive electrochromic (EC) performance were developed using the sol-gel spin-coating method. To confirm the optimized Fe-doping effect on the V 2 O 5 films for the EC performance, we adjusted the Fe atomic percentages to 0.0, 0.5, 1.0, and 1.5 at%, respectively. With the effect of Fe doping on the V 2 O 5 films, the obtained films resulted in the formation of the oxygen vacancies. As the result, when the optimum Fe atomic percentage was 1.0 at%, the enhanced switching speeds (3.7 s for the bleaching speed and 2.0 s for the coloration speed) and enhanced coloration efficiency value (47.3 cm 2 /C) compared to the other films were implemented. This can be attributed to the improved electrical conductivity and Li + diffusion coefficient that led to efficient generation of the EC reaction activity and narrowing the optical bandgap at the coloration state to increase transmittance modulation. Therefore, this unique film can be a promising EC material to improve the performance for the EC devices.
KW - Electrical properties
KW - Electrochromic performances
KW - Films
KW - Optical properties
KW - Transition metal oxides
UR - http://www.scopus.com/inward/record.url?scp=85059349572&partnerID=8YFLogxK
U2 - 10.1016/j.ceramint.2018.12.219
DO - 10.1016/j.ceramint.2018.12.219
M3 - Article
AN - SCOPUS:85059349572
SN - 0272-8842
VL - 45
SP - 7137
EP - 7142
JO - Ceramics International
JF - Ceramics International
IS - 6
ER -