彩色多晶硅太阳电池性能研究

通过调节单层SiN_x:H减反射膜的厚度制备各种颜色的多晶硅太阳电池. 测试了太阳电池片和组件的光学和电学性能, 用PC1D软件对其性能进行模拟. 通过分析得到以下结论: 1)当减反射膜的厚度小于50 nm时, 影响彩色组件和电池片功率变化的主要因素是开路电压(V_oc)和短路电流(I_sc), 当减反射膜的膜厚度大于50 nm时, 随着减反射膜钝化作用的稳定, 影响彩色组件和电池片功率变化的主要因素是I_sc; 2)大多数彩色电池片的效率比传统蓝色电池片的效率低, 但是在封装之后, 彩色电池组件可以有不同程度的增益, 主要原因是减反射膜与乙烯-醋酸乙烯共聚物和玻璃匹配性较好. 关键词： 彩色太阳电池 氮化硅 钝化 光学匹配

Performance of polycrystal silicon color solar cells

One layer SiN_x:H films with different thickness are deposited by plasma enhanced chemical vapor deposition to prepare several kinds of polycrystalline silicon color solar cells. The optical and electrical properties are tested by instruments and simulated by PC1D. And the analysis shows that 1) when the antireflection film thickness is less than 50 nm, the deficiencies of color solar cells and solar modules are mainly influenced by open circuit voltage (V_oc) and short circuit current (I_sc); when the antireflection film thickness is greater than 50 nm, the passivation of H ions is stable and the deficiencies are mainly influenced by I_sc; 2) the efficiency of most color solar cells is lower than that of blue ones, but the color solar cell will have some gains after packaging, which is because of the better optical matching of reflective film with ethylene-vinyl acetal copo and glass.
Keywords： color solar cells silicon nitride passivation optical matching