PHOTOELECTROCHEMICAL CELL WITH A SOLID ELECTROLYTE

摘要

A photovoltaic device (2) is described comprising a porous film of titanium oxide nanocrystalline particles (4) intercalated with an ionic conducting material (polymer) electrode (8). The ionic conducting polymer electrode (8) may be formed of a mixture of polyethyleneoxide, lithium iodide and iodine. The nanocrystalline titanium oxide particles (4) are dye sensitised. In operation a photon is absorbed injecting an electron into the conduction band of the titanium oxide (4). A hole is passed to the ionic conducting polymer (8). The electron is conducted through the titanium oxide nanocrystalline particles (4) and the hole is conducted through the ionic conducting polymer electrode (8). The cell may be unsealed without rapid evaporation of iodine.