Theoretical analysis of grainboundary recombination velocity in polycrystalline Si solar cell

다결정규소(多結晶硅素) 태양전지(太陽電池)의 입계면(粒界面) 재결합(再結合) 속도(速度)에 관(關)한 이론적(理論的) 분석(分析)

Due to the grainboundary recombination and the poor diffusion length, the polycrystalline cell efficiency is lower than the singlecrystalline cell. In order to define the effect of grains and grain-boundaries, 2 - dimensional differential diffusion equations of minority carrier are modelled. To solve them, two theoretical formulas are derived, which can be evaluated the grainboundary recombination velocity and the grain diffusion length. Also computer-aided numerical analysis is given.