铝背场的显微组织和力学性能[外文翻译].zip
铝背场的显微组织和力学性能[外文翻译],材料科学与工程 材料物理与化学，外文文献翻译及原文microstructure and mechanical propertiesof aluminium back contact layersabstract: the overall demand to reduce solar energy costs gives...
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材料科学与工程 材料物理与化学，外文文献翻译及原文
MICROSTRUCTURE AND MECHANICAL PROPERTIESOF ALUMINIUM BACK CONTACT LAYERS
ABSTRACT:
The overall demand to reduce solar energy costs gives a continuous drive to reduce the thickness ofsilicon wafers. Handling and bowing problems associated with thinner wafers become more and more important, asthese can lead to cells cracking and thus to high yield losses. In this paper the microstructure and mechanicalproperties of the aluminium on the rear side of a solar cell are discussed. It is shown that the aluminium back contacthas a complex composite-like microstructure, consisting of five main components: 1) the back surface field layer;2) a eutectic layer; 3) spherical (3 - 5 μm) hypereutectic Al-Si particles surrounded by a thin aluminum oxide layer(200 nm); 4) a bismuth-silicate glass matrix; and 5) pores (14 vol.%). The Young’s modulus of the Al-Si particles isestimated by nanoindentation and the overall Young’s modulus is estimated on the basis of bowing measurements.These results are used as input parameters for an improved thermomechanical multiscale model of a silicon solar cell.
MICROSTRUCTURE AND MECHANICAL PROPERTIESOF ALUMINIUM BACK CONTACT LAYERS
ABSTRACT:
The overall demand to reduce solar energy costs gives a continuous drive to reduce the thickness ofsilicon wafers. Handling and bowing problems associated with thinner wafers become more and more important, asthese can lead to cells cracking and thus to high yield losses. In this paper the microstructure and mechanicalproperties of the aluminium on the rear side of a solar cell are discussed. It is shown that the aluminium back contacthas a complex composite-like microstructure, consisting of five main components: 1) the back surface field layer;2) a eutectic layer; 3) spherical (3 - 5 μm) hypereutectic Al-Si particles surrounded by a thin aluminum oxide layer(200 nm); 4) a bismuth-silicate glass matrix; and 5) pores (14 vol.%). The Young’s modulus of the Al-Si particles isestimated by nanoindentation and the overall Young’s modulus is estimated on the basis of bowing measurements.These results are used as input parameters for an improved thermomechanical multiscale model of a silicon solar cell.
摘要:减少太阳能成本的总需求为寻找途径减少硅晶层厚度的科学家们提供了源源不断的动力。解决与薄硅片相关的问题变得越来越重要。因为薄片可以导致电池破裂,从而增大了出产损失率。本文旨在讨论太阳能电池铝背场的微观结构和机械性能。结果表明,铝背场具有复杂的复合微观结构,包括五个主要部分:1)背表面层;
2)共晶层;3)球形过共晶铝硅粒子被一层氧化铝薄膜覆盖;4)玻璃体硅酸铋;5)气孔(14%)。这些结果作为输入参数为提高多尺度热机模型的硅太阳能电池。
关键词:铝背接触,新型器件，弯曲的硅，太阳能电池
