Window-integrated photovoltaic devices

A device comprising:

• a perovskite layer;
• a first charge-transport layer;
• a second charge-transport layer;
• and
• an adhesion layer, wherein:
• the adhesion layer is positioned between the charge transport layer and the perovskite layer,
• the adhesion layer forms a first bond with the charge transport layer,
• the adhesion layer forms a second bond with the perovskite layer,
• the first charge-transport layer comprises a hole-transport layer,
• the second charge-transport layer comprises an electron-transfer layer,
• the first charge-transport layer comprises a plurality of first tabs having a first cross-sectional shape and a first length,
• the second charge-transport layer comprises a plurality of second tabs having a second cross-sectional shape and a second length,
• the first tabs are positioned parallel to the second tabs and a first axis,
• the first tabs and the second tabs are positioned within a first plane,
• the first tabs and the second tabs are interdigitated, resulting in a plurality of first spaces positioned between the interdigitated first tabs and second tabs,
• the perovskite layer comprises a plurality of second tabs having a third cross-sectional shape and a third length,
• the third tabs are positioned within a second plane that is parallel with the first plane,
• the third tabs are parallel to a second axis that is substantially perpendicular to the first axis,
• the perovskite layer fills at least a portion of the first spaces, and
• the third tabs form a plurality of second spaces between neighboring third tabs.