Method and apparatus for reduction of light induced degradation with carrier injection

An apparatus for reducing light induced degradation with carrier injection, the apparatus comprising:

• a housing in which heat treatment is performed on a solar battery cell;
• a heating assembly that is disposed in the housing and is configured to heat the solar battery cell, wherein the solar battery cell is seated on the heating assembly;
• a jig assembly that is disposed in the housing and fixes the solar battery cell to the heating assembly by pressing the solar battery cell seated on the heating assembly;
• an LED array assembly that has a plurality of LED light sources and is configured to radiate light to the solar battery cell;
• a driving assembly that is coupled to the jig assembly and to the LED array assembly, and is configured to move the jig assembly or the LED array assembly;
• and
• a power assembly that is configured to apply a voltage to the solar battery cell, measure voltage reactivity of the solar battery cell, and supply power to the LED light sources.

A method of reducing light induced degradation using an apparatus comprising a housing in which heat treatment is performed on a solar battery cell, a heating assembly that is disposed in the housing and is configured to heat the solar battery cell, wherein the solar battery cell is seated on the heating assembly, a jig assembly that is disposed in the housing and fixes the solar battery cell to the heating assembly by pressing the solar battery cell seated on the heating assembly, an LED array assembly that has a plurality of LED light sources and is configured to radiate light to the solar battery cell, a driving assembly that is coupled to the jig assembly and to the LED array assembly and is configured to move the jig assembly or the LED array assembly, the method comprising:

• applying the heat treatment to the solar battery cell by the heating assembly to remove the light induced degradation of the solar battery cell;
• applying pre-annealing to the solar battery cell by the heating assembly and radiating the light to the solar battery cell by the plurality of LED light sources in order to perform a regeneration process for the solar battery cell;
• stopping the light radiation to the solar battery cell and applying a voltage to the solar battery cell, wherein carrier injection is performed on the solar battery cell;
• and
• radiating again the light to the solar battery cell by the plurality of LED light sources and checking whether the light induced degradation has been removed from the solar battery cell.