NOVELTY - A polymer sheet (10) comprises greater than or equal to 1 layer of polymer layer in 1 surface (11a) and opposite surface (11b) of polyester support sheet (11). Polymer layer of outermost layer is 1st polymer layer (12) which contains fluorine-type polymer as binder of polymer layers provided in 1 surface. Polymer layer of outermost layer is 2nd polymer layer (13) which contains polyolefin-type polymer as binder of polymer layers provided in opposite surface. Polymer layer provided in 1 surface or polymer layer provided in opposite surface contains mat agent (14).    USE - A polymer sheet for stack of polymer sheet or roll of polymer sheet used for solar cell backsheet used in module of solar cells (all claimed).    ADVANTAGE - Foreign materials cannot easily adhere on polymer sheet, mat agent cannot be easily peeled from polymer sheet, and reduction in service life of solar cell module and production of solar cell module defect can be prevented.    DETAILED DESCRIPTION - A polymer sheet (10) comprises greater than or equal to 1 layer of polymer layer in 1 surface (11a) and opposite surface (11b) of polyester support sheet (11). Polymer layer of outermost layer is 1st polymer layer (12) which contains fluorine-type polymer as binder of polymer layers provided in 1 surface. Polymer layer of outermost layer is 2nd polymer layer (13) which contains polyolefin-type polymer as binder of polymer layers provided in opposite surface. Polymer layer provided in 1 surface or polymer layer provided in opposite surface contains mat agent (14) so that formula (A/B)=0.06-0.8 (1), formula C=5-50 mg/m2 (2), and formula (A/D)=0.1-1.1 (3) may be satisfied, where A represents average particle diameter ( mu m) of mat agent, B represents total thickness ( mu m) of surface side polymer layer, C represents addition amount of mat agent per single surface, and D represents total thickness ( mu m) of surface side polymer layer. INDEPENDENT CLAIMS are included for:    (1) stack of polymer sheet for solar cells containing stacked polymer sheets (10);    (2) roll of polymer sheet for solar cells formed by winding polymer sheet in longitudinal direction; and    (3) manufacture of polymer sheet for solar cells which involves applying 1st coating liquid containing fluorine-type polymer dissolved or dispersed in organic solvent to 1 surface (11a) and opposite surface (11b) of polyester support sheet (11), applying 2nd coating liquid containing polyolefin-type polymer dissolved or dispersed in organic solvent, applying 3rd coating liquid containing silicone-type polymer dissolved or dispersed in organic solvent, forming 1st polymer layer (12) which contains fluorine-type polymer as binder on 1 surface of outermost layer by drying, and forming 2nd polymer layer (13) which contains polyolefin-type polymer as binder on opposite surface of outermost layer in which mat agent (14) is contained in 1st coating liquid, 2nd coating liquid, and/or 3rd coating liquid.    DESCRIPTION OF DRAWING(S) - The drawing shows a sectional diagram of the polymer sheet for solar cells.    Polymer sheet (10)    Polyester support sheet (11)    Surface (11a)    Opposite surface (11b)    1st polymer layer (12)    2nd polymer layer (13)    Mat agent (14)