One embodiment can provide a photovoltaic roof tile module. The photovoltaic roof tile module can include a photovoltaic roof tile module. The photovoltaic roof tile module can include at least: a first photovoltaic roof tile and a second photovoltaic roof tile positioned adjacent to each other, and a spacer coupled to and positioned between the first and second photovoltaic roof tiles. A respective photovoltaic roof tile can include front and back glass covers, and multiple cascaded strings encapsulated between the front and back glass covers. A respective cascaded string can include a plurality of photovoltaic structures electrically coupled to each other in series, and the multiple cascaded strings can be electrically coupled to each other in parallel. The first and second photovoltaic roof tiles can be electrically coupled to each other in parallel.

A glazing unit is provided for producing an aesthetically pleasing effect, comprising or consisting of at least one pane, said pane having a first structured surface to which a three-dimensional photonic structure is applied and the average refractive index of the photonic structure being higher than approximately 1.6 or higher than approximately 1.8 or higher than approximately 1.95. A method of producing such a glazing unit and the use thereof is also provided.

A glazing unit is provided for producing an aesthetically pleasing effect, comprising or consisting of at least one pane, said pane having a first structured surface to which a three-dimensional photonic structure is applied and the average refractive index of the photonic structure being higher than approximately 1.6 or higher than approximately 1.8 or higher than approximately 1.95. A method of producing such a glazing unit and the use thereof is also provided.

One embodiment can provide a solar roof tile. The solar roof tile can include a front cover, a back cover, one or more photovoltaic structures positioned between the front cover and the back cover, and an optical filter positioned between the front cover and the photovoltaic structures. The optical filter is configured to block light within a predetermined spectral range, thereby preventing the light from reflecting off surfaces of the photovoltaic structures to exit the solar roof tile.

One embodiment can provide a solar roof tile. The solar roof tile can include a front cover, a back cover, one or more photovoltaic structures positioned between the front cover and the back cover, and an optical filter positioned between the front cover and the photovoltaic structures. The optical filter is configured to block light within a predetermined spectral range, thereby preventing the light from reflecting off surfaces of the photovoltaic structures to exit the solar roof tile.

Roof tile for forming a roof covering, wherein the roof tile (1) comprises a ceramic body (8); wherein said ceramic body (8) is made of porcelain; and wherein the roof tile (1) further comprises a glaze coating (9), which is situated above said ceramic body (8).

Roof tile for forming a roof covering, wherein the roof tile (1) comprises a ceramic body (8); wherein said ceramic body (8) is made of porcelain; and wherein the roof tile (1) further comprises a glaze coating (9), which is situated above said ceramic body (8).

A method for manufacturing a roof tile, wherein the roof tile comprises a ceramic body, which is made of porcelain, and is provided with at least one hole, which is present in at least said ceramic body; wherein the method comprises at least the steps of providing a body composition; pressing the body composition; and firing the pressed body composition, and wherein, for forming said at least one hole, before said step of firing, a recess is formed in the body in the form of a blind hole or a through hole.

A method for manufacturing a roof tile, wherein the roof tile comprises a ceramic body, which is made of porcelain, and is provided with at least one hole, which is present in at least said ceramic body; wherein the method comprises at least the steps of providing a body composition; pressing the body composition; and firing the pressed body composition, and wherein, for forming said at least one hole, before said step of firing, a recess is formed in the body in the form of a blind hole or a through hole.

A glazing unit is provided for producing an aesthetically pleasing effect. The glazing unit may include at least one polymer with a first structured surface to which a photonic structure is applied. The surface can reflect a first partial spectrum of incident electromagnetic radiation, and can transmit a second partial spectrum of incident electromagnetic radiation. A reflected proportion corresponds to a higher harmonic and is in a visible spectral range.