摘要An all-thin-film (ATF) electrochromic device for modulating the optical transmittance is manufactured using magnetron sputtering. The devices consists of MoO3 as the main electrochromic layer, LiBO2+Li2SO4(LiBSO) as the ion conductor layer, and NiOx as the complementary electrochromic layer. Glass covered with indium tin oxide (ITO) is used as the substrate and the ITO film is used as the bottom electrode. The ITO film deposited on the top of the devices is used as the other electrode. The structure and morphology of the films are characterized by x-ray diffraction (XRD) and scanning electron microscopy (SEM). The devices exhibit good optical properties with low transmittance values in the coloured state, and the optical modulation is measured by spectrophotometer in the wavelength range from 400 to 800nm. The average visible light transmittance reaches 50.2% and 3.7% in bleached and coloured state, respectively. The results indicate that such a monolithic system has great potential to be applied in smart windows.
Abstract：An all-thin-film (ATF) electrochromic device for modulating the optical transmittance is manufactured using magnetron sputtering. The devices consists of MoO3 as the main electrochromic layer, LiBO2+Li2SO4(LiBSO) as the ion conductor layer, and NiOx as the complementary electrochromic layer. Glass covered with indium tin oxide (ITO) is used as the substrate and the ITO film is used as the bottom electrode. The ITO film deposited on the top of the devices is used as the other electrode. The structure and morphology of the films are characterized by x-ray diffraction (XRD) and scanning electron microscopy (SEM). The devices exhibit good optical properties with low transmittance values in the coloured state, and the optical modulation is measured by spectrophotometer in the wavelength range from 400 to 800nm. The average visible light transmittance reaches 50.2% and 3.7% in bleached and coloured state, respectively. The results indicate that such a monolithic system has great potential to be applied in smart windows.
[1] Granqvist C G 1995 Handbook of InorganicElectrochromic Materials (Amsterdam: Elsevier) [2] Deb S K 1974 Proceedings of the 24th ElectronicComponents Conference of IEEE (Washington, DC, 13-15 May 1974) p 11 [3] Lee S H, Cheong H M, Tracy E, Mascarenhas A, Czanderna A W andDeb S K 1999 Appl. Phys. Lett. 75 1541 [4] Chen W F, Wu S Y and Ferng Y F 2006 Mater. Lett. 60 790 [5] Jeong D J, Kim W S and Sung Y E 2001 Jpn. J. Appl. Phys. 40 L708 [6] Faughnan B W and Grandall R S 1977 Appl. Phys. Lett. 31 834 [7] Larsson A L and Niklasson G A 2004 Mater. Lett. 582517 [8] Zhang X P and Chen G P 1997 Thin Solid Films 298 53 [9] Ashrit P V, Girouard F E and Truong V V 1996 Solid StateIonics 89 65 [10] Papaefthimiou S, Leftheriotis G and Yianoulis P 2001 Electrochimica Acta 46 2145 [11] Nagai J, McMeeking G D and Saitoh Y 1999 Sol. Energ. Mat.Sol. C 56 309 [12] Ahn K S, Nah Y C and Sung Y E 2003 Solid State Ionics 165 155 [13] Joo K H, Vinatier P, Pecquenard B, Levasseur A and Sohn H J 2003 Solid State Ionics 160 51 [14] Larsson A L and Niklasson G A 2004 Sol. Energ. Mat.Sol. C 84 351 [15] Sivakumar R, Gopinath C S, Jayachandran M and Sanjeeviraja C 2007 Current Appl. Phys. 7 76 [16] Azens A, Kullman L, Vaivars G, Nordborg H and Granqvist C G 1998 Solid State Ionics 113115 449 [17] Miller E L and Rocheleau K E 1997 J. Electrochem. Soc. 144 1995 [18] Jiang S R, Yan P X, Feng B X, Cai X M and Wang J 2002 Mater.Chem. Phys. 77 384 [19] Gesheva K A, Cziraki A, Ivanova T and Szekeres A 2007 ThinSolid Films 515 4609 [20] Cruz T G S, Gorenstein A, Landers R, Kleiman G G andCastro S C 1999 J. Electron. Spectrosc. 101103 397
2008, Vol. 25 
