This invention relates to a transparent
solar cell device and its fabrication method. The device includes a substrate, a transparent or semi-transparent
anode layer, an
anode auxiliary electrode layer, a PV photovoltaic layer, a transparent or semi-transparent
cathode layer, a
quantum dot absorption and emission layer, and an encapsulation layer, all stacked together. The
quantum dot absorption and emission layer comprises
quantum dot material, resin, and a
photosensitizer. The
quantum dot material is a nanostructured inorganic quantum material. The core
diameter of the
quantum dot material is 1-50 nm, and the thickness of the outer shell is 10-200 nm. The
quantum dot material also includes an
energy level transition layer between the core and the outer shell, which is one or more of sulfides, selenides, phosphides, or tellurides. Furthermore, a
metal reflective layer is provided on the encapsulation surface. This
solar cell device can fully utilize the high-energy photons in the short-
wavelength band that are sacrificed in traditional
solar cell devices.