具有不同反射率的减反射层对单晶硅太阳能电池效率的影响
Influence of nanowires AR layer with different reflectivity on the conveision efficiency of monocrystal silicon solar cell
先是探究了采用化学湿法刻蚀在面积为15.6×15.6 cm2的P型制绒单晶硅衬底上制备硅纳米线的的过程：首先在HF/AgNO3混合液中沉积Ag 膜，然后在HF/H2O2混合液中刻蚀硅纳米线。通过控制刻蚀参数，本实验制备出了具有不同长度和分布情况的硅纳米线，由此得到了反射率在15.1%到5.5%之间变化的硅纳米线/金字塔双重结构减反射层。通过对比实验，分析了减反射层对电池效率的影响。结论是减反射层中的纳米线越长且分布越密集，则其反射率越低，但这样的结构也会导致光生载流子的表面复合作用增强。因此，减反射层的选择，应该兼顾表面光反射和载流子表面复合两个方面的平衡，这样才能有效提高电池效率。最后，基于200nm硅纳米线构成的减反射层，我们制备出了最高效率为15.94%单晶硅太阳能电池。
Nanowires on 15.6×15.6 cm2 large area black p-type pyramid-textured monocrystal silicon were fabricated by metal-assisted electroless chemical etching carried out by depositing Ag film in HF/AgNO3 and Ag-assisted etching in HF/H2O2. Controlling the length and distribution of nanowires, pyramid/nanowire AR layers of different specification were attained. Reflectivity of AR layers ranging from 15.1 % to 5.5 % (300~1000nm) was detected. Through eight groups of compared experimentations, conclusion was drawn that longer and denser nanowires would lower reflectivity of AR layers, but at the same time enhance surface recommendation. So the balance between reflectance and recommendation of the optimal AR layer has always been our focus and was found, finally. Solar cell based on 200nm nanowires with the conversion efficiency of 15.94 % was accomplished.
刘爱民、张炳烨、杨帆、张恩阳、赵增超
能源动力工业经济
微电子与固体电子学纳米线刻蚀反射率效率
nanowiresetchingreflectivityconversion efficiency
刘爱民,张炳烨,杨帆,张恩阳,赵增超.具有不同反射率的减反射层对单晶硅太阳能电池效率的影响[EB/OL].(2013-04-18)[2025-08-19].http://www.paper.edu.cn/releasepaper/content/201304-375.点此复制
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