【摘要】 本论文通过实验制备得到CuIn0.7Ga0.3Se2(CIGs)、CdS、ZnO三种半导体材料,然后根据这三种半导体的相关材料参数和实验数据,得出了它们形成异质结前后的能带图,并计算它们的能带边失调值△EC、△EV。其中,CdS／CIGS的导带边失调值ΔEc对高效率CIGS薄膜太阳电池的影响作用最大,为-0.298eV(高效电池的理想值范围为0-0.4eV),说明这对电池整体性能不是很好。更多还原

【Abstract】 The junction characteristic of the heterojunction of the CuIn0.7 Ga0.3 Se2(CIGS) thin film solar cells directly influences the properties of the solar cells. Therefore, it is necessary to research it systematically. In the experiments, we firstly fabricated the CuIn0.7 Ga0.3 Se2, CdS and ZnO thin films. According to the materials’ parameters and experimental data, we attained the energy band figures before and after forming the heterojunction, and calculated their energy band offset ΔEC,ΔEV. The conduction band offset ΔEC of the CdS/CIGS, which is the key factor to influence the properties of the solar cells, is - 0.298eV (the ideal data of the high efficiency solar cells are 0-0. 4eV. ) . That does harm to the properties of the solar cells.更多还原