Glass roof shingle

A photovoltaic roof shingle, comprising:

• a shingle cover layer having a thickness from about 0.7 mm (0.03 inches) to about 7 mm (0.3 inches) wherein the shingle cover layer comprises a core-clad glass that comprises two cladding layers with a core layer disposed between the two cladding layers, wherein the core layer has a coefficient of thermal expansion and the cladding layers each have a coefficient of thermal expansion that is different than the core layer coefficient of thermal expansion;
• a shingle base layer made of glass having a thickness from about 100 microns (0.004 inches) to 2.5 mm (0.1 inches) disposed underneath the shingle cover layer, wherein opposing surfaces of the shingle cover layer and the shingle base layer define a cavity;
• a photovoltaic module disposed within the cavity, the photovoltaic module comprising an array of solar cells, the array of solar cells being configured for use at a select wavelength range;
• and
• a seal area formed between the shingle base layer and the shingle cover layer and around the cavity to control ingress of moisture into the cavity.