Abstract: A multilayered photovoltaic device (11) formed on internal surface of small glass sphere (10) provides sustainable power for a sensor, communication and data processing means secured inside the sphere. The sphere is encapsulated by a transparent rubber cover (21) to provide for a deliverable miniature mote to be in intelligence, defense, security and many other civil applications.

Abstract: A photoelectrochemical (PEC) device comprising two substrates, wherein: at least one substrates is transparent and coated with Transparent Electronic Conductor (TEC); a working electrode comprising dye sensitised porous semiconductor is formed on one substrate; a counter electrode comprising catalytic layer is formed on another substrate; electrolyte is placed between the two substrates; metallic conductor are utilized to conduct electrical current within and from the device; a protective layer of non-metallic material, with sufficient electrical conductivity to enable viable electrical output from the PEC device, is used to protect the metallic conductors from the electrolyte of the device.

Abstract: A regenerative photoelectrochemical (RPEC) device comprising two substrates, wherein: one or both substrates are transparent and are coated with transparent electrical conductor (TEC) layer; one or more layers of porous wide band gap semiconductor is/are applied to selected area of said TEC layer and sensitised with dye; electrolyte is placed between said two substrates; hole(s) made in one or both said substrates to enable external electrical connection(s) to said RPEC device.