Making a deviced structure through the thin film process for semiconductors, the performance as a photo-electrode has highly improved.

ENGADGET: Panasonic Photosynthesis System converts carbon dioxide to organic material with plant-like efficiency

IBM's approach is based on a process developed by IBM Research to crank out so-called thin-film solar cells based on copper, indium, gallium and selenide.

FORBES: Intel, IBM Get Solar Exposure