NOVELTY - A solar cell (10) has p-n junction that converts photon energy into separate charge carrier and hole carrier; and thin film electric interconnect (26, 28) on an electric insulating and thermal transmissive substrate (24) in a heat dissipating and electric generating relationship to the p-n junction.    USE - Solar cell for photovoltaic cells (claimed) used to power orbiting satellites and other spacecraft and in remote areas as source of power for applications such as roadside emergency telephones, remote sensing, cathodic protection of pipelines, road signs, home power generation pocket calculators and communication devices, grid-connected electricity generation, wrist watches, remote radiotelephones, and water primping applications; infrared sensors; chemical detectors; photoresistors or light dependent resistor photodiodes; photocathodes; or pyroelectric detectors.    ADVANTAGE - The solar cell is provided with an improved photodetector that converts a higher proportion of available photon energy into usable electric energy.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for:    (1) a method of producing a photovoltaic cell comprising forming thermal conductive film on electric insulating and thermal transmissive substrate and disposing the substrate with semiconductors of opposing conductivity type connected electrically in series and thermally in parallel in heat dissipation and electric generating relationship to p-n junction;    (2) a photovoltaic cell;    (3) a system for generating electrical power from solar radiation; and    (4) a photovoltaic system comprising photodetector cell.    The thin film electric interconnect on electric insulating and thermal transmissive substrate comprises a substrate with an aligned thermal conductive upgraded single walled nanotube coating or film.    DESCRIPTION OF DRAWING(S) - The drawing is a front elevation view of the solar cell.    Solar cell (10)    Anti-reflective film (12)    N-type layer (14)    Electrodes (18, 20)    Thermal transmissive substrate (24)    Thin film electric interconnect (26, 28)