(US6222118-B1)   NOVELTY - Multiple solar batteries are distributed between a pair of substrates (21,22). The substrates are made up of cellulose, paper and non-woven fabric. The substrate (21) is semitransparent or transparent. The substrate (21) includes cellophane, glassine, parchment or Japanese paper. The impregnation of oil is performed on the substrate (21). The substrate (22) is opaque.    USE - E.g. solar battery integrated semiconductor device.    ADVANTAGE - As substrates include cellulose the difference in coefficient of thermal expansion of substrates is reduced. Generation of curvature due to change in temperature is prevented, thus device life time is prolonged. Addition of cellulose reduces weight and price. Enables decomposition naturally, and thus expense for discarding is reduced, hence generation of harmful environmental hormone is not performed. Since substrates contain paper, cellophane and non-woven fabric, large quantity of light enters into solar battery thus optoelectric conversion efficiency is enhanced. Impregnation of repellent prevents substrates getting bulged when contacted with water.    (US2001007262-A1)   NOVELTY - Multiple solar batteries are distributed between a pair of substrates (21,22). The substrates are made up of cellulose, paper and non-woven fabric. The substrate (21) is semitransparent or transparent. The substrate (21) includes cellophane, glassine, parchment or Japanese paper. The impregnation of oil is performed on the substrate (21). The substrate (22) is opaque.    USE - E.g. solar battery integrated semiconductor device.    ADVANTAGE - As substrates include cellulose the difference in coefficient of thermal expansion of substrates is reduced. Generation of curvature due to change in temperature is prevented, thus device life time is prolonged. Addition of cellulose reduces weight and price. Enables decomposition naturally, and thus expense for discarding is reduced, hence generation of harmful environmental hormone is not performed. Since substrates contain paper, cellophane and non-woven fabric, large quantity of light enters into solar battery thus optoelectric conversion efficiency is enhanced. Impregnation of repellent prevents substrates getting bulged when contacted with water.