Photovoltaic devices are described including: a region of perovskite material which is in electrical contact with a mesoporous region of hole transport material wherein the hole transport material is at least partially comprised of an inorganic hole transport material.

A conductor assembly for use in fabricating a photoelectrical device is disclosed including: a number of electrically conductive filaments; a number of substantially transparent filaments; and wherein the conductive and transparent filaments are joined together to form a flexible web. Photoelectrical devices or sub-...

A Photoeleetroehemieal Photovoltaic Panel (PPP) comprising a number of individual substrates (1) and a shared substrates (2), wherein: the substrates are electrical conductors or at least partially coated by an electrically conductor (3); at least one substrate is optically transparent; between the shared subst...

A photovoltaic module comprising: (i) Three or more substrates (1, 2, oncmgwu m c closed-spaced parallel relationship to one another, the substrates comprising: a centre substrate (2) having first and second faces; a first outer substrate (1) having an inner anc outer face, wherein the inner face and the first face...