TY - JOUR
T1 - Radiative cooling characteristics of functionally graded silicon suboxide films prepared by magnetron sputtering
AU - Goto, Takashi
AU - Miyazaki, Hidetoshi
AU - Masumoto, Hiroshi
PY - 2005/11
Y1 - 2005/11
N2 - Silicon suboxide (SiO x) could be a potential material for radiative cooling due to appropriate infra-red absorption at wave-length (λ) between 8 and 13 μm. In this study, SiO x films ranging from x = 0.98 to 1.7 were prepared by magnetron sputtering using a SiO sintered body target. An SiO 0.98 single layer film had a relatively sharp absorption peak at λ = 10 μm. The obtained SiO 0.98 film showed amorphous and a black-brown color. An optical band gap (E g) of the SiO 0.98 film was 3.6eV, and the SiO x (x > 1.4) film was transparent in the UV-visible range with a wide optical band gap (> 4 eV). A functionally graded SiO x layers showed broader absorption from λ = 8 to 13 μm, promising for radiative cooling.
AB - Silicon suboxide (SiO x) could be a potential material for radiative cooling due to appropriate infra-red absorption at wave-length (λ) between 8 and 13 μm. In this study, SiO x films ranging from x = 0.98 to 1.7 were prepared by magnetron sputtering using a SiO sintered body target. An SiO 0.98 single layer film had a relatively sharp absorption peak at λ = 10 μm. The obtained SiO 0.98 film showed amorphous and a black-brown color. An optical band gap (E g) of the SiO 0.98 film was 3.6eV, and the SiO x (x > 1.4) film was transparent in the UV-visible range with a wide optical band gap (> 4 eV). A functionally graded SiO x layers showed broader absorption from λ = 8 to 13 μm, promising for radiative cooling.
KW - Functionally graded films
KW - Magnetron sputtering
KW - Radiative cooling
KW - Silicon suboxide
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U2 - 10.2497/jjspm.52.851
DO - 10.2497/jjspm.52.851
M3 - 学術論文
AN - SCOPUS:31344436394
SN - 0532-8799
VL - 52
SP - 851
EP - 856
JO - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
JF - Funtai Oyobi Fummatsu Yakin/Journal of the Japan Society of Powder and Powder Metallurgy
IS - 11
ER -