| 摘要 |
A regenerative photovoltaic cell (1) producing a visible light-induced photocurrent comprises a transparent or translucent first substrate (2) having a back surface coated with an indium tin oxide (ITO) layer (4), a nano-structured photoanode (5) comprising an n-type semiconductor (6), such as titanium dioxide, coated with a broad band absorbing melanin-like material (7), a second substrate (8) with a carbon/platinum coating (9) forming a counter cathode and a liquid electrolyte (14) between the photoanode and cathode, said electrolyte re-oxidising the melanin-like material (7) after it has absorbed incident radiation, thus returning it to the ground state. A p-i-n type photovoltaic cell is also exemplified in addition to other electronic devices employing melanin-like materials and processes for the production of mechanically stable, flexible films of melanin-like material for use in electronic devices.
|
