TY - JOUR
T1 - Optimizing Phase Transition and Thermochromic Performance of Vanadium Dioxide Thin Films via Erbium Doping
AU - Azmat, Mian
AU - Yang, Junlin
AU - Jin, Haibo
AU - Hajra, None
AU - Shoaib, Saba
AU - Naseem, Muhammad Kashif
AU - Li, Qianyi
AU - Li, Jingbo
N1 - Publisher Copyright:
© 2024 American Chemical Society
PY - 2024/2/23
Y1 - 2024/2/23
N2 - Vanadium dioxide (VO2) with a thermally driven phase transition is considered the most attractive thermochromic material for smart window applications. However, it is still challenging to optimize its phase transition temperature (TMIT), luminous transmittance (Trlum), and solar modulation (ΔTrsol) simultaneously for practical applications. In this work, erbium (Er)-doped VO2 thin films were synthesized on the c-cut sapphire substrate to improve the thermochromic performance. At 4% single-element doping concentration, Er-doped VO2 thin film significantly lowers the TMIT at a rate of ∼5 °C/at. % Er accompanied by an increase in both Trlum and ΔTrsol. Moreover, Er-doped VO2 films also preserved phase transition sharpness and excellent infrared modulation ability. The role of erbium doping and MIT mechanism are comprehensively explained by experimentation and DFT calculations unveiling the promising future of Er-doped VO2 for next-generation energy-saving smart windows and optical switching devices.
AB - Vanadium dioxide (VO2) with a thermally driven phase transition is considered the most attractive thermochromic material for smart window applications. However, it is still challenging to optimize its phase transition temperature (TMIT), luminous transmittance (Trlum), and solar modulation (ΔTrsol) simultaneously for practical applications. In this work, erbium (Er)-doped VO2 thin films were synthesized on the c-cut sapphire substrate to improve the thermochromic performance. At 4% single-element doping concentration, Er-doped VO2 thin film significantly lowers the TMIT at a rate of ∼5 °C/at. % Er accompanied by an increase in both Trlum and ΔTrsol. Moreover, Er-doped VO2 films also preserved phase transition sharpness and excellent infrared modulation ability. The role of erbium doping and MIT mechanism are comprehensively explained by experimentation and DFT calculations unveiling the promising future of Er-doped VO2 for next-generation energy-saving smart windows and optical switching devices.
KW - erbium doping
KW - luminous transmittance
KW - phase transition
KW - thermochromic properties
KW - vanadium dioxide (VO)
UR - http://www.scopus.com/inward/record.url?scp=85186081588&partnerID=8YFLogxK
U2 - 10.1021/acsaom.3c00460
DO - 10.1021/acsaom.3c00460
M3 - Article
AN - SCOPUS:85186081588
SN - 2771-9855
VL - 2
SP - 350
EP - 360
JO - ACS Applied Optical Materials
JF - ACS Applied Optical Materials
IS - 2
ER -