NOVELTY - Dye-labeled polymer comprising a fluorescent dye moiety and a polymer moiety, is new, where the fluorescent dye moiety and the polymer moiety are connected by a chemical bond.    USE - The dye-labeled polymer is useful in a solar collector of a solar cell, a solar photovoltaic glass, a solar cell module and an off-grid lamp (all claimed), where the solar cell is a thin film solar cell and compound semiconductor solar cell, the solar photovoltaic glass is useful in buildings and windows of a car and the off-grid lamp is used for the decoration of Christmas tree, furniture, a tile and a window.    ADVANTAGE - The dye-labeled polymer improves transmittance, visibility and light collecting efficiency of the solar collector thus reducing the production cost and size of the solar cell and improving photoelectric conversion rate and reliability of the solar cell. The off-grid lamp is eco-friendly, and can be conveniently used without using additional electricity. The colorful solar collectors can absorb light having different wavelengths.    DETAILED DESCRIPTION - INDEPENDENT CLAIMS are included for:    (1) a solar collector comprising either a waveguide, or a wavelength conversion material disposed on the waveguide, where the wavelength conversion material comprises 0-95 pts. wt. of a polymer material and 5-100 pts. wt. of the dye-labeled polymer and the polymer material is different from the dye-labeled polymer, or the waveguide, and at least one fluorescent column embedded in the waveguide, where the fluorescent column comprises the wavelength conversion material that absorbs light having a first wavelength and emits light having a second wavelength and the first wavelength is smaller than the second wavelength;    (2) a method for manufacturing the solar collector, comprising: either providing a first waveguide and a second waveguide, forming at least one first cylinder trench at a surface of the first waveguide, filling a first fluorescent material into the first cylinder trench to form a first fluorescent column, and assembling the first waveguide and the second waveguide, where the first fluorescent column is embedded between the first waveguide and the second waveguide to form an embedded fluorescent column; providing a waveguide having a main surface and a side surface, forming at least one cylinder hole from the side surface of the waveguide, where the cylinder hole extends into the waveguide, and filling a fluorescent material into the cylinder hole to embed a fluorescent column in the waveguide; or providing a first waveguide, where the first waveguide has at least one cylinder trench, coating a fluorescent material on the first waveguide, and attaching a second waveguide on the first waveguide having the fluorescent material, where the fluorescent material forms at least one fluorescent column in the cylinder trench;    (3) a solar cell module comprising the solar collector, and a solar cell optically coupled to the solar collector and used for collecting and converting light, which passes through the solar collector, into energy; and    (4) an off-grid lamp comprising the solar collector, the solar cell optically coupled to the solar collector, an electricity storage device electrically connected to the solar cell and used for receiving and storing the electricity output from the solar cell, and a light emitting diode die electrically connected to the electricity storage device.