首页> 外文会议>European photovoltaic solar energy conference >ADVANCED ELLIPSOMETER MEASUREMENTS OF SILICON NITRIDE (A-SiN_x:H) AR FILM ON ACIDIC AND ALKALINE TEXTURED MC-SI SOLAR CELLS
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ADVANCED ELLIPSOMETER MEASUREMENTS OF SILICON NITRIDE (A-SiN_x:H) AR FILM ON ACIDIC AND ALKALINE TEXTURED MC-SI SOLAR CELLS

机译:酸性和碱性纹理化MC-SI太阳能电池上氮化硅(A-SiN_x:H)AR膜的高级椭偏仪测量

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For multicrystalline silicon (mc-Si) solar cell manufacturers, there is a need for a fast and precisemethod to determine the optical properties and thickness of the amorphous silicon nitride (a-SiN_x:H) anti-reflective(AR) film on the textured mc-Si wafer. Ellipsometry is a technique able to quickly measure on many (small) spotsover a large area, but faces new challenges when used on textured (and low-reflectivity) surfaces. In this work, thefirst ellipsometer results of an a-SiN_x:H film (1) on acidic textured mc-Si wafers, (2) on both acidic and alkalinetextured mc-Si wafers over a very broad wavelength region (245-1690 nm), and (3) with the advanced (non-standard)Mueller matrix and depolarization measurements on both acidic and alkaline textured mc-Si wafers will be presented.Together with advanced topography techniques (optical profilometer and SEM), it will be demonstrated why thestandard (simple) ellipsometry is not valid and why the non-standard (advanced) ellipsometry is instead necessary foran accurate determination of the optical properties of the a-SiNx:H film on many grains on the alkaline textured andall grains on the acidic textured mc-Si wafers. Furthermore, the necessity for further improvements of today’scommercially available ellipsometry and surface topography techniques (SEM and AFM) will be discussed.
机译:对于多晶硅(mc-Si)太阳能电池制造商,需要快速而精确的 确定非晶态氮化硅(a-SiN_x:H)的光学特性和厚度的方法 (AR)膜在有纹理的mc-Si晶圆上。椭偏法是一种能够快速测量许多(小)斑点的技术 在大面积上使用,但在带纹理(和低反射率)的表面上使用时面临新的挑战。在这项工作中, a-SiN_x:H膜的第一椭偏仪结果(1)在酸性纹理化mc-Si晶片上,(2)在酸性和碱性下 在非常宽的波长范围(245-1690 nm)上具有纹理的mc-Si晶片,以及(3)具有先进的(非标准)晶片 将介绍在酸性和碱性纹理化mc-Si晶圆上的Mueller矩阵和去极化测量。 结合先进的地形技术(光学轮廓仪和SEM),将证明为什么 标准(简单)椭圆仪无效,为什么非标准(高级)椭圆仪必须用于 准确测定a-SiNx:H膜在碱性纹理和表面上许多晶粒上的光学性能 酸性纹理化mc-Si晶圆上的所有晶粒。此外,有必要进一步改善当今的 将讨论市售的椭圆仪和表面形貌技术(SEM和AFM)。

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