Shen Xiangqian, Wang Qingkang, Wangyang Peihua, Huang Kun, Chen Le, Liu Daiming
Opt Lett. 2015 Nov 15;40(22):5180-3. doi: 10.1364/OL.40.005180.
Efficient light management for micromorph tandem solar cells is achieved in this Letter by the combined application of TiO(2) and SiO(x) interlayers. Here, TiO(2) is incorporated into a ZnO/a-Si interface as an antireflection layer and SiO(x) is incorporated into an a-Si/μc-Si interface as an intermediate reflecting layer. Solar cells with such architecture not only increase the light absorption but also reduce the mismatch losses of current between the top and bottom cells. The key results, as evidenced by the spectral response measurements, are that the total photocurrent increases from 22.62 to 24.35 mA/cm(2), as well as the short circuit current density of the two component cells is reached to a delicate balance. The influences of the interlayer thickness and morphology on the improvement have been investigated using an electromagnetic simulation in order to take full advantage of this design.
在本信函中，通过联合应用TiO(2)和SiO(x)中间层实现了对微晶硅串联太阳能电池的高效光管理。在此，TiO(2)作为减反射层被引入到ZnO/a-Si界面，而SiO(x)作为中间反射层被引入到a-Si/μc-Si界面。具有这种结构的太阳能电池不仅增加了光吸收，而且减少了顶部和底部电池之间电流的失配损失。光谱响应测量结果表明，关键成果是总光电流从22.62增加到24.35 mA/cm(2)，并且两个组件电池的短路电流密度达到了微妙的平衡。为了充分利用这种设计，使用电磁模拟研究了中间层厚度和形态对性能提升的影响。
