NOVELTY - A solar cell back surface sheet (5) is arranged on back surface side of solar cell module in which translucent front surface board is laminated on front side of sealing layer which seals photovoltaic cell inside. The solar cell back surface sheet has sequential lamination of translucent insulating layer (7), corrugated structure layer (8) capable of forming corrugated structure on surface on opposite side to translucent insulating layer, light-reflective metal layer (9) having fine corrugated shape, contact bonding layer (10), and weather-proofing layer (11).    USE - Solar cell back surface sheet is used for solar cell module (claimed) for electronic devices for calculator and satellite.    ADVANTAGE - The solar cell module formed using the solar cell back surface sheet has excellent reliability, isotropic dispersion property, photoelectric conversion efficiency, barrier property, crack resistance, stability, weather resistance, hydrolysis resistance and workability.    DETAILED DESCRIPTION - A solar cell back surface sheet is arranged on the back surface side of solar cell module in which a translucent front surface board is laminated on the front side of the sealing layer which seals the photovoltaic cell inside. The solar cell back surface sheet has sequential lamination of translucent insulating layer, corrugated structure layer capable of forming corrugated structure on the surface on opposite side to a translucent insulating layer, light-reflective metal layer having fine corrugated shape, a contact bonding layer, and a weather-proofing layer. The translucent insulating layer is sequentially arranged to the front side of the back surface sheet. The light-reflective metal layer has unidirectional scattering structure of reflecting incident light and scattering light over one direction by fine corrugated shape. An INDEPENDENT CLAIM is included for solar cell module (1).    DESCRIPTION OF DRAWING(S) - The drawing shows the schematic view explaining the relationship between light-reflective metal layer and reflected light having corrugated structure. (Drawing includes non-English language text)    Solar cell module (1)    Solar cell back surface sheet (5)    Translucent insulating layer (7)    Corrugated structure layer (8)    Light-reflective metal layer (9)    Contact bonding layer (10)    Weather-proofing layer (11)