SOLAR CELL MODULE FOR INCREASING LIGHT TRAPPING EFFICIENCY BY FORMING NANO PLASTIC BALLS IN LIGHT-CONCENTRATING PART

摘要

A plurality of transparent nano plastic balls include a solar cell using sunlight to generate electricity, a first ethylene vinyl acetate (EVA) layer formed on a front surface of the solar cell, a second ethylene vinyl acetate (EVA) layer formed on a back surface of the solar cell, a cover attached to a front surface of the first ethylene vinyl acetate layer, and a primer layer formed on a front surface of the cover.

主权项

1. A solar cell module for increasing light condensing efficiency by forming nano plastic balls in a light-condensing part, the solar cell module comprising:
a solar cell (110) to generate electricity using sunlight; a first ethylene vinyl acetate (EVA) layer (120) formed on a front surface of the solar cell; a second ethylene vinyl acetate (EVA) layer 130 formed on a back surface of the solar cell; a cover 140 attached to the front surface of the first ethylene vinyl acetate layer; and a primer layer 150 formed on a front surface of the cover 140 and condensing incident sunlight, wherein the primer layer 150 comprises a plurality of transparent nano plastic balls 151 distributed at intervals within a predetermined range and having a diameter within a range from about 5 um to about 50 um, and the transparent nano plastic balls 151 are configured to have a same diameter, and the primer layer 150 is formed of acrylic and the transparent nano plastic balls 151 are formed of polymethyl methacrylate, wherein the transparent nano plastic balls 151 are formed by being UV cured in an ultra violet (UV) solution, the transparent nano plastic balls 151 is included in the primer layer 150 in an amount of about 10 wt % to about 80 wt %, and the cover 140 is formed of glass or a transparent plastic resin, wherein the transparent plastic resin is polyethylene (PE), polyetheretherketon (PEEK), polyetherimide (PEI), polyethylenenaphthalate (PEN), polyethersulfone (PES), polyethylenetherephtalate (PET), polyimide (PI), polyolefin (PO), polymethylmethacrylate (PMMA), polysulfone (PSF), polyvinylalcohol (PVA), polyvinylalcohol (PVA), polyvinylcinnamate (PVCi), or triacetycellulose (TAC), wherein the solar cell 110 is a selenium photovoltaic cell using contact between a metal and a semiconductor or a silicon photovoltaic cell using a PN junction of a copper sulfite photovoltaic cell and a semiconductor, and wherein a back sheet 160 is attached to a back surface of the solar cell 110 for reducing reflection or leakage of sunlight and for light trapping.