TECHNOLOGY FOCUS - POLYMERS - Preferred Components: The organic silicon polymer is introduced with silicate fluorescent powder particle in the synthesis component, the chemical measuring formula is represented as follows: (Me2+O)a(Si(O1-pCxDyEz)2)b.Me2+=barium (Ba2+) and/or strontium (Sr2+) and/or calcium (Ca2+) and/or magnesium (Mg2+) and/or europium (Eu2+);C=Ha1=fluorine (F-) and/or chlorine (Cl-) and/or bromine (Br-) and/or iodine (I-);D=Cha1=sulfur (S2-) and/or selenium (Se2+;E=nitrogen (N3-); andp=x/2+y+3z/2; chemical measuring ratio of the fluorescent powder is represented as following number: x is not greater than 0.01 and is not smaller than 0.0001, y is not greater than 0.01 and greater than 0.0001, z is not greater than 0.01 and greater than 0.0001, a=1, 2, 3, 8; b=1, 2, 4; under excitation of solar light radiation, radiation range of the fluorescent powder is between gamma 1=500 nm and gamma 2=660nm.Also, the organic silicon polymer is introduced with fluorescent powder containing aluminate component in the synthesis component, the chemical measuring formula is represented as follows: Ln3Al5(O1-pCxDyEz)12Ln=yttrium (Y) and/or gallium (Ga) and/or lanthanum (La) and/or cerium (Ce) and/or praseodymium (Pr) and/or ytterbium (Yb) and/or neodymium (Nd) and/or lutetium (Lu);C=Ha1=F- and/or Cl- and/or Br- and/or I-;D=Cha1=S2- and/or Se2-, E=N3-; andp=x/2+y+3z/2; chemical measuring ratio of the fluorescent powder is represented as following number: x is not greater than 0.01 and is not smaller than 0.0001, y is not greater than 0.01 and greater than 0.0001, z is not greater than 0.01 and greater than 0.0001; besides, under excitation of solar light radiation, radiation range of the fluorescent powder is between gamma 1=490 nm and gamma 2=720 nm.Moreover, the organic silicon polymer introduces particle of the synthesis fluorescent powder having chemical measuring formula as follows: Ln(P1-nVn)O4.Ln=Y and/or Gd and/or La and/or Ce and/or Pr and/or Yb and/or Nd and/or Lu; chemical measuring ratio n of the fluorescent powder is changed into that n is not greater than 0.6 and greater than 0.0001, under excitation of solar light, radiation field of the fluorescent powder is between gamma 1=800 nm and gamma 2=1060 nm.The organic silicon polymer introduces particle of the synthesis fluorescent powder having chemical measuring formula as follows: Ln2O2S1-qC2q.Ln=Y and/or Gd and/or La and/or Ce and/or Pr and/or Yb and/or Nd and/or Lu; andC=Ha1=F- and/or Cl- and/or Br- and/or I-, chemical measuring ratio of the fluorescent powder is: q is smaller than 0.5 and greater than 0.5, and the fluorescent powder can be excited by the solar light close to the infrared light field.Preferred Conditions: The dimension of fluorescent powder particle distributed in the range of luminescent conversion layer is between not greater than 0.8 mu m and greater than 0.1 mu m, the optimal quality concentration is 0.05-3%. Preferred Battery: Alternatively, the silicon solar battery comprises luminescent converter containing poly silicon, the luminescent conversion layer, thickness of the poly silicon sheet is Delta =220-360 mu m, the efficiency improvement gamma =11.5%. In a second alternative case, the silicon solar battery comprises luminescent converter containing amorphous silicon, the luminescent conversion layer, the luminescent converter is from silicon film of alpha -Si, the thickness is Delta =16-32 mu m, the efficiency is improved about 7%.