Fabrication and Characterization of Multi-layer Heat Mirror with Photocatalytic Properties
Tran Le1, Tuan Tran1, Huu Chi Nguyen1, Dac Ngoc Son Luu1, Minh Nam Hoang2, Dinh Quan Nguyen2
1Department of Applied Physics, College of Natural Science, National University of Ho Chi Minh City, 227 Nguyen Van Cu, District 5, Ward 4, Ho Chi Minh City, Vietnam2Department of Chemical Engineering, College of Technology, National University of Ho Chi Minh City, 168 Ly Thuong Kiet, District 10, Ho chi Minh City, Vietnam
Fabrication and Characterization of Multi-layer Heat Mirror with Photocatalytic Properties
Tran Le1, Tuan Tran1, Huu Chi Nguyen1, Dac Ngoc Son Luu1, Minh Nam Hoang2, Dinh Quan Nguyen2
1Department of Applied Physics, College of Natural Science, National University of Ho Chi Minh City, 227 Nguyen Van Cu, District 5, Ward 4, Ho Chi Minh City, Vietnam2Department of Chemical Engineering, College of Technology, National University of Ho Chi Minh City, 168 Ly Thuong Kiet, District 10, Ho chi Minh City, Vietnam
摘要A novel TiO2(5)/TiO2(buffer)/Ti(4)/Ag(3)/Ti(2)/TiO2(1) multi-layer film coating with corning glass is designed and fabricated by a dc magnetron sputtering method as a renovation of the well-known TiO2/Ti/Ag/Ti/TiO2 system in order to obtain a heat mirror system with photocatalytic properties due to sufficient thickness of the TiO2 layer. The outer TiO2 layer is fabricated in two steps, possibly claimed as two layers TiO2(5) and TiO2(buffer), among which the 70-nm-thick layer TiO2(buffer) deposited in poor oxygen effectively minimizes the oxidation toward its neighbor Ti(4) layer. The optimal total thickness of the TiO2(5) and TiO2(buffer) di-layer is found to be 300nm to yield a highly photo-catalytic property of the film without affecting the optical properties considerably. This multi-layer film can transmit light of above 75-85% in the visible spectrum (380≤λ ≤760nm) and reflect radiation of above 90% in the infrared spectrum (λ≥760nm). Such multi-layer coatings are strongly recommended not only as promising transparent heat mirrors but also as photo-catalytic films for architectural window coatings.
Abstract：A novel TiO2(5)/TiO2(buffer)/Ti(4)/Ag(3)/Ti(2)/TiO2(1) multi-layer film coating with corning glass is designed and fabricated by a dc magnetron sputtering method as a renovation of the well-known TiO2/Ti/Ag/Ti/TiO2 system in order to obtain a heat mirror system with photocatalytic properties due to sufficient thickness of the TiO2 layer. The outer TiO2 layer is fabricated in two steps, possibly claimed as two layers TiO2(5) and TiO2(buffer), among which the 70-nm-thick layer TiO2(buffer) deposited in poor oxygen effectively minimizes the oxidation toward its neighbor Ti(4) layer. The optimal total thickness of the TiO2(5) and TiO2(buffer) di-layer is found to be 300nm to yield a highly photo-catalytic property of the film without affecting the optical properties considerably. This multi-layer film can transmit light of above 75-85% in the visible spectrum (380≤λ ≤760nm) and reflect radiation of above 90% in the infrared spectrum (λ≥760nm). Such multi-layer coatings are strongly recommended not only as promising transparent heat mirrors but also as photo-catalytic films for architectural window coatings.
Tran Le;Tuan Tran;Huu Chi Nguyen;Dac Ngoc Son Luu;Minh Nam Hoang;Dinh Quan Nguyen. Fabrication and Characterization of Multi-layer Heat Mirror with Photocatalytic Properties[J]. 中国物理快报, 2009, 26(11): 116801-116801.
Tran Le, Tuan Tran, Huu Chi Nguyen, Dac Ngoc Son Luu, Minh Nam Hoang, Dinh Quan Nguyen. Fabrication and Characterization of Multi-layer Heat Mirror with Photocatalytic Properties. Chin. Phys. Lett., 2009, 26(11): 116801-116801.
[1] Lampert C M 1981 Sol. Energy Mater. Sol. Cells 6 1 [2] Betts K H et al 1985 Appl. Opt. 24 2651 [3] Gracin D et al 1984 Int. J. Energy Res. 8 53 [4] Lampert C M et al 1979 Sol. Energy Mater. Sol. Cells 1 319 [5] Peters W C et al 1999 Int. SAMPE Symp. Exhibition 44 373 [6] Chaudhuri T K 1992 Int. J. Energy Res. 16 481 [7] Basu P et al 1988 Indian J. Pure Appl. Phys. 26 307 [8] Kawasaki H et al 2008 J. Phys: Conf. Ser. 100012038 [9] Kawasaki H et al 2006 Trans. Mater. Res. Soc. Jpn. 31 491 [10] Jung M J et al 2005 J. Vac. Sci. Technol. B 23 1826 [11] Wang Z 2005 Appl. Surf. Sci. 239 262 [12] Martin D C et al 1960 Proceedings of Conference onCoatings for the Aerospace Environment (Dayton, Ohio 9--10 November1960) [13] Perterson R E et al 1975 J. Vac. Sci. Technol. B 12 174 [14] Schmidt R N et al 1965 Appl. Opt. 4 917 [15] Fan J C C et al 1976 Appl. Opt. 15 1012 [16] George J et al 1987 Phys. Status Solidi A 100513 [17] Angadi M A 1988 Sol. Energy Mater. Sol. Cells 17 137 [18] Fan J C C 1974 Appl. Phys. Lett. 25 693 [19] Martin-Palma R J et al 1998 Sol. Energy Mater. Sol.Cells 53 55 [20] Grosse P et al 1977 J. Non-Cryst. Solids 21838 [21] Smith G B J. Appl. Phys. 59 571 [22] Chiba K et al 1984 Thin Solid Films 112 359 [23] Kostlin G F 1982 Thin Solid Films 89 287 [24] Bogaerts W A et al 1983 J. Mater. Sci. 182847 [25] Pogany A P 1988 Mater. Aust. 20 10 [26] Nadel S J 1987 J. Vac. Sci. Technol. A 5 2709 [27] Georgson M et al 1991 J. Vac. Sci. Technol. A 9 2191 [28] Fujishima A et al 2000 J. Photochem. Photobiol. C 1 1 [29] Wang Z et al 2006 Thin Solid Films 515 3146 [30] Tazawa M et al 2004 Sol. Energy Mater. Sol. Cells 84 159
2009, Vol. 26 
