Patent ID: 8345344

Claim:
A multicolor photovoltaic electrochromic apparatus, comprising: a first transparent substrate; a second transparent substrate disposed opposite to the first transparent substrate; at least a photovoltaic electrochromic device disposed on the first transparent substrate, wherein the photovoltaic electrochromic device comprises: at least one first thin-film solar cell and at least one second thin-film solar cell, wherein the first and the second thin-film solar cells have a distinct potential difference, each of the first and the second thin-film solar cells comprising a first anode, a photoelectric conversion layer, and a first cathode; and at least an electrochromic material disposed on the first and the second thin-film solar cells; and at least a chromogenic device disposed between the first transparent substrate and the second transparent substrate, wherein the chromogenic device comprises: a first electrode and a second electrode; and at least a chromogenic material disposed on the first electrode and the second electrode, wherein the first cathodes of the first and the second thin-film solar cells, having the distinct potential difference, are connected to the first electrode and the second electrode of the chromogenic device respectively.