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Aluminum Oxide for the Surface Passivation of High Efficiency Silicon Solar Cells
Armin Richter
其他書名
Technology and Advanced Characterization
出版Fraunhofer Verlag, 2015
主題Science / Chemistry / Physical & TheoreticalScience / Physics / GeneralScience / Physics / Condensed MatterTechnology & Engineering / Power Resources / Alternative & Renewable
ISBN38396084739783839608470
URLhttp://books.google.com.hk/books?id=WbcargEACAAJ&hl=&source=gbs_api
註釋Thin layers of aluminum oxide (Al2O3) are highly relevant for various high-efficiency silicon solar cell designs, as Al2O3 can provide an excellent passivation of crystalline silicon surfaces. One main part of this thesis deals with the evaluation, optimization and in-depth analysis of such passivating Al2O3 layers deposited by atomic layer deposition. In particular the results regarding the properties of the c Si/Al2O3 interface allowed to identify the underlying passivation mechanisms for various process variations.
Another part of the thesis deals with the realization of p+nn+ silicon solar cells through the application and evaluation of industrially feasible technologies, i.e. for the front side boron-doped p+ emitter (based on the Al2O3 surface passivation), as well as for the diffusion and passivation of the rear side n+ back surface field.
The excellent silicon surface passivation obtained in this thesis allowed in addition the experimental investigation of the Auger recombination in high-purity crystalline silicon with an improved precision, based on which results a new parameterization of the Auger recombination was developed. This parameterization was used to reassess the intrinsic efficiency limit of crystalline silicon solar cells.