Preparation of Coating Glass with High Visible Transmittance and High UV Cut-off

doi:10.15541/jim20160600

Abstract

Abstract:

A glass with a honeycomb surface was prepared by a reverse micellar solution etching technology. The honeycomb surface might reduce the light reflection and increase the average transmittance of visible light by nearly 7%. The chemical etching technology is environment friendly for unuse of HF or fluosilicate. To compare the visible light transmittance of the coated glass, CeO₂/TiO₂ films were deposited on the honeycomb surface glass and raw glass by radio frequency magnetron sputtering. A series of optimization experiments were carried out to obtain a coated glass with high visible transmittance and high UV cut-off. The samples were characterized by UV-Vis spectrophotometer, SEM, XRD, and XPS. When the UV cut-off ratios were 99% for both the honeycomb surface glass and the raw glass, the average transmittance of visible light was 85% for the coated honeycomb surface glass, and only 79% for the coated raw glass prepared under the same coating conditions. In addition, the porous structure on the glass surface also improved the contact area between the film and the substrate. Therefore, the binding force between film and substrate was increased by about 2 times.

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Key words: porous glass, transmittance, CeO₂/TiO₂ coating, magnetron sputtering

CLC Number:

TQ174

WANG Hong-Yan, ZHANG Hao, JIANG Hong, WANG Guo-Qing, XIONG Chun-Rong. Preparation of Coating Glass with High Visible Transmittance and High UV Cut-off[J]. Journal of Inorganic Materials, 2017, 32(7): 758-764.

Figures/Tables 12

Fig. 1 Top view (a) and cross section (b) SEM images of the porous glass

Fig. 2 Transmittances of the honeycomb surface glass (a) and the raw glass (b)

Fig. 3 Digital photos of the raw glass (a) and the honeycomb surface glass (b) under sunlight

Fig. 4 Influence on sputtering powers on the transmittance of the CeO2-TiO2 films

Fig. 5 XPS spectra of the CeO2/TiO2 films deposited under different sputtering powers

Table 1 Effect of relative sputtering powers on properties and compositions of CeO2/TiO2 films

	A1	A2	A3	A4	A5	A6
Power (TiO₂)/W	140	140	140	140	140	140
Power (CeO₂)/W	80	100	120	140	160	180
Transmittance of visible/%	79.9	77.9	76.9	75.3	72.5	67.8
UV cut-off ratios/%	96.8	97.2	99.1	98.4	95.3	89.5
(Ce/Ti)/%	42	46	50	55	62	65
[Ce³⁺/(Ce³⁺+Ce⁴⁺)]/%	68	70	72	69	64	61
[Ti³⁺ /(Ti³⁺+ Ti⁴⁺)]/%	57	59	64	58	56	55
Thickness of the film/nm	540	550	570	580	587	595

Fig. 6 XRD patterns of the CeO2/TiO2 films deposited under different sputtering powers

Fig.7 SEM images of CeO2/TiO2 thin films sputtered for different time

Table 2 Influence of sputtering time on the transmittance of the CeO2/TiO2 thin-films

Samples	B1	B2	B3	B4	B5
Sputtering time/min	10	20	30	40	50
Transmittance of visible/%	86.4	82.5	80.6	79.5	70.1
UV cut-off ratio/%	79.8	82.2	88.5	96.6	99.2
Thickness of the film/nm	127	235	352	456	554

Fig. 8 Influence on sputtering times on the transmittance of CeO2/TiO2 thin films

Table 3 Transmittances of the CeO2/TiO2 coated honeycomb surface glass and raw glass

Samples	Transmittance of visible/%	UV cut-off ratio/%	Thickness of the film /nm
Coated raw glass	79.8	99.1	435
Coated honeycomb surface glass	84.7	99.7	410

Fig. 9 Cohesion results of the thin films on (a) the raw glass and (b) the honeycomb surface glass substrates by scratching test

References 29

[1]	ZHOU XUEDONG, NI JIAMIAO, ZHAO XIUJIAN, et al.Preparation of CeO2-TiO2 thin films for UV absorbing by RF sputtering.Journal of Wuhan University of Technology, 2006, 28(1): 7-14.
[2]	YU XIAOLI, CAO HONGZHANG, ZHANG YUXI, et al.Development of UV-shielding properties of CeO2.Chinese Rare Earths, 2013, 34(4): 80-84.
[3]	TIAN XUECHUN, DONG MENGMENG, XIE HOULI.Application of glass film in energy-saving building.New Building Materials, 2009, 36(8): 78-79.
[4]	SAINZ M A, DURÁN A, NAVARRO J M F. UV highly absorbent coatings with CeO2, and TiO2.Journal of Non-Crystalline Solids, 1990, 121(1/2/3): 315-318.
[5]	MORIMOTO T, TOMONAGA H, MITANI A.Ultraviolet ray absorbing coatings on glass for automobiles.Thin Solid Films, 1999, 351(1/2): 61-65.
[6]	SHAO MINGDI, LI MEI, LIU SHAOGANG, et al.Effects of CeO2 on the properties of heat-absorbing glass.Chinese Rare Earths, 2012, 33(4): 19-22.
[7]	DONG YUHONG, ZHAO QINGNAN, WU SHUO, et al.Ultraviolet-shielding and conductive double functional films coated on glass substrate by Sol-Gel process.Journal of Rare Earths, 2010, 28(S1): 446-450.
[8]	WU SHUO, ZHAO QINGNAN, MIAO DENGKUI, et al.Synthesis and characterization of Sb-doped SnO2-(CeO2-TiO2) composite thin films deposited on glass substrates for antistatic electricity and uv-shielding.Journal of Rare Earths, 2010, 28(S1): 189-193.
[9]	NI JIAMIAO, ZHAO QINGNAN, WANG PENG, et al.Double functional films with UV absorption and transparent conduction deposited on glass by radio-frequency magnetron sputtering.Journal of the Chinese Ceramic Society, 2006, 34(10): 1182-1186.
[10]	DU Y, HE H, JIN Y, et al.Optical model of porous glasses using genetic algorithms.Optik-International Journal for Light and Electron Optics, 2013, 124(15): 2093-2096.
[11]	FUJIMA T, FUTAKUCHI E, TOMITA T, et al.Hierarchical nanoporous glass with anti-reflectivity and super-hydrophilicity by one-pot etching.Langmuir, 2014, 30(48): 14494-14497.
[12]	MENG XIANGMAN, WANG LIANG, CHEN YU, et al.Influence of sodium hydroxide solution on the optical and wetting properties of borate silicate glasses.Journal of Beijing University of Technology, 2015, 41(12): 1911-1914.
[13]	经验. 减反射玻璃的研制. 北京: 北京工业大学硕士学位论文, 2007.
[14]	高倩. 大面积氧化物薄膜材料的微纳米结构可控制备与性能调控技术. 浙江: 浙江大学博士学位论文, 2014.
[15]	WANG Z, LIU X, LIU W, et al.Latest development of thin film synthesis technology: reactive magnetron sputtering.Journal of Vacuum Science & Technology, 2013, 33(12): 1229-1236.
[16]	LIU HONGYAN, YAN YUE, WANG YONGLIN, et al.Recent progress in study of transparent conducting oxide films.Journal of Aeronautical Materials, 2015, 35(4): 63-82.
[17]	PENG SHOU, JIANG JIWEN, LI GANG, et al.Effect of DC magnetron sputtering process on optical and electrical properties of ITO thin films.Journal of the Chinese Ceramic Society, 2016, 44(7): 987-994
[18]	ŠKODA M, CABALA M, CHÁB V, et al. Sn interaction with the CeO2(111) system: Bimetallic bonding and ceria reduction.Applied Surface Science, 2008, 254(14): 4375-4379.
[19]	TAYLOR G.Disintegration of water drops in an electric field.Royal Society of London Proceedings, 1964, 280(1382): 383-397.
[20]	CHEN L, LI J, GE M.Promotional effect of Ce-doped V2O5-WO3/TiO2 with low vanadium loadings for selective catalytic reduction of NOx by NH3.Journal of Physical Chemistry C, 2009, 113(50): 21177-21184.
[21]	WU Z, JIN R, LIU Y, et al.Ceria modified MnOx/TiO2, as a superior catalyst for NO reduction with NH3, at low-temperature.Catalysis Communications, 2008, 9(13): 2217-2220.
[22]	WEI F, LIANGSUO N I.Photocatalytic performance and doping mechanism of B-S Co-doped TiO2.Chinese Journal of Catalysis, 2007, 28(10): 905-909.
[23]	LIU B, ZHAO X, ZHANG N, et al.Photocatalytic mechanism of TiO2-CeO2, films prepared by magnetron sputtering under UV and visible light.Surface Science, 2005, 595(1): 203-211.
[24]	REDDY B M, KHAN A.Nanosized CeO2-SiO2, CeO2-TiO2, and CeO2-ZrO2 mixed oxides: influence of supporting oxide on thermal stability and oxygen storage properties of ceria.Catalysis Surveys from Asia, 2005, 9(3): 155-171.
[25]	BHARDWAJ N, KUNDU S C.Electrospinning: a fascinating fiber fabrication technique.Biotechnology Advances, 2010, 28(3): 325-347.
[26]	PURANS J, AZENS A, GRANQVIST C G.X-ray absorption study of Ce-Ti oxide films.Electrochimica Acta, 2001, 46(s 13/14): 2055-2058.
[27]	BENJAMIN P, WEAVER C.Measurement of adhesion of thin films. Proceedings of the Royal Society. A Mathematical Physical & Engineering Sciences, 1960, 254(1277): 163-176.
[28]	LUO ZHIHUA, ZHAO YUTAO, LI SUMIN.Structure and properties of TiO2-CeO2 thin films prepared by magnetron sputtering on polymer substrate.Materials for Mechanical Engineering, 2007, 31(9): 37-40.
[29]	RANDALL N X, FAVARO G, FRANKEL C H.The effect of intrinsic parameters on the critical load as measured with the scratch test method.Surface & Coatings Technology, 2001, 137(2): 146-151.