A laminate comprising: a first panel having a first major surface and including a first transparent substrate having a first refractive index; a second panel having a first major surface and including a second transparent substrate having a second refractive index; a third panel having a first major surface and including a third transparent substrate having a third refractive index; and a fill material (330, 350, 430) disposed within a gap between the second and third panels (220, 240) and having a fill material refractive index, wherein: the first transparent substrate, the second transparent substrate, and the third transparent substrate comprise, a glass substrate, a sapphire substrate, an aluminum oxynitride substrate, a spinel substrate, or a transparent polymer; the first major surfaces of second and third panels (222, 242) are coupled to the first major surface of the first panel; the second panel comprises an electrochromic device, said electrochromic device comprising an electrochromic layer, a counter electrode layer, and a solid ion-conducting layer disposed between the electrochromic and counter electrode layers (30, 28); the fill material (330, 350, 430) comprises a polyacrylate, a polyester, a polycarbonate, a polysiloxane, a polyether, a polyvinyl compound, another transparent polymer, or a mixture thereof; and the fill material refractive index is within 0.09 of the second refractive index, or within 0.09 of the third refractive index, or a value between the second and third refractive indices; the first transparent substrate has a first coefficient of thermal expansion; the second transparent substrate has a second coefficient of thermal expansion; the third transparent substrate has a third coefficient of thermal expansion; and the first coefficient of thermal expansion is within 18 × 10 -7 /°C of each of the second and third coefficients of thermal expansion; and the second and third coefficients of thermal expansion are within 2 × 10 -7 /°C of each other. a first panel having a first major surface and including a first transparent substrate having a first refractive index; a second panel having a first major surface and including a second transparent substrate having a second refractive index; a third panel having a first major surface and including a third transparent substrate having a third refractive index; and a fill material (330, 350, 430) disposed within a gap between the second and third panels (220, 240) and having a fill material refractive index, wherein: the first transparent substrate, the second transparent substrate, and the third transparent substrate comprise, a glass substrate, a sapphire substrate, an aluminum oxynitride substrate, a spinel substrate, or a transparent polymer; the first major surfaces of second and third panels (222, 242) are coupled to the first major surface of the first panel; the second panel comprises an electrochromic device, said electrochromic device comprising an electrochromic layer, a counter electrode layer, and a solid ion-conducting layer disposed between the electrochromic and counter electrode layers (30, 28); the fill material (330, 350, 430) comprises a polyacrylate, a polyester, a polycarbonate, a polysiloxane, a polyether, a polyvinyl compound, another transparent polymer, or a mixture thereof; and the fill material refractive index is within 0.09 of the second refractive index, or within 0.09 of the third refractive index, or a value between the second and third refractive indices; the first transparent substrate has a first coefficient of thermal expansion; the second transparent substrate has a second coefficient of thermal expansion; the third transparent substrate has a third coefficient of thermal expansion; and the first coefficient of thermal expansion is within 18 × 10 -7 /°C of each of the second and third coefficients of thermal expansion; and the second and third coefficients of thermal expansion are within 2 × 10 -7 /°C of each other. the first transparent substrate, the second transparent substrate, and the third transparent substrate comprise, a glass substrate, a sapphire substrate, an aluminum oxynitride substrate, a spinel substrate, or a transparent polymer; the first major surfaces of second and third panels (222, 242) are coupled to the first major surface of the first panel; the second panel comprises an electrochromic device, said electrochromic device comprising an electrochromic layer, a counter electrode layer, and a solid ion-conducting layer disposed between the electrochromic and counter electrode layers (30, 28); the fill material (330, 350, 430) comprises a polyacrylate, a polyester, a polycarbonate, a polysiloxane, a polyether, a polyvinyl compound, another transparent polymer, or a mixture thereof; and the fill material refractive index is within 0.09 of the second refractive index, or within 0.09 of the third refractive index, or a value between the second and third refractive indices; the first transparent substrate has a first coefficient of thermal expansion; the second transparent substrate has a second coefficient of thermal expansion; the third transparent substrate has a third coefficient of thermal expansion; and the first coefficient of thermal expansion is within 18 × 10 -7 /°C of each of the second and third coefficients of thermal expansion; and the second and third coefficients of thermal expansion are within 2 × 10 -7 /°C of each other.