Resin composition for solar cell package

A wet solar cell, comprising:

• a package for a wet solar cell with an opening for storing an electrolytic solution for the wet solar cell;
• a transparent substrate disposed to cover at least part of said opening;
• and
• a pair of facing electrodes in a space formed by said package and said transparent substrate;
• wherein the package for a wet solar cell is obtained by molding the resin composition containing a cyclic olefin polymer having at least one kind of structures represented by the following general formula (1):
• wherein x and y represent a copolymerization ratio and are a real number satisfying 0/100≦/x≦95/5;
• x and y are on a molar basis;
• n is the number of substitution of a substituent Q and an integer of 0≦n≦2;
• R1 is a 2+n valent group selected from the group consisting of hydrocarbon groups having 2 to 20 carbon atoms and R1 which is present in plurality may be the same or different;
• R2 is a hydrogen atom, or a monovalent group selected from the group consisting of hydrocarbon groups having 1 to 10 carbon atoms containing carbon and hydrogen atoms and R2 which is present in plurality may be the same or different;
• R3 is a tetravalent group selected from the group consisting of hydrocarbon groups having 2 to 10 carbon atoms and R3 which is present in plurality may be the same or different;
• Q is COOR4, wherein R4 is a hydrogen atom, a monovalent group selected from the group consisting of hydrocarbon groups having 1 to 10 carbon atoms containing carbon and hydrogen atoms.