کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
6535709 | 49318 | 2014 | 7 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Impact of metal-organic vapor phase epitaxy environment on silicon bulk lifetime for III-V-on-Si multijunction solar cells
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موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
![عکس صفحه اول مقاله: Impact of metal-organic vapor phase epitaxy environment on silicon bulk lifetime for III-V-on-Si multijunction solar cells Impact of metal-organic vapor phase epitaxy environment on silicon bulk lifetime for III-V-on-Si multijunction solar cells](/preview/png/6535709.png)
چکیده انگلیسی
With the final goal of integrating III-V materials on silicon substrates for tandem solar cells, the influence of the metal-organic vapor phase epitaxy (MOVPE) environment on the minority carrier properties of silicon wafers has been evaluated. These properties will essentially determine the photovoltaic performance of the bottom cell in a III-V-on-Si tandem solar cell. A comparison of the base minority carrier lifetimes obtained for different thermal processes carried out in a MOVPE reactor on Czochralski silicon wafers has been carried out. An important degradation of minority carrier lifetime during the surface preparation (i.e. H2 anneal) has been observed. Three different mechanisms have been proposed for explaining this behavior: (1) the introduction of extrinsic impurities coming from the reactor; (2) the activation of intrinsic lifetime killing impurities coming from the wafer itself; and finally, (3) the formation of crystal defects, which eventually become recombination centers. The effect of the emitter formation by phosphorus diffusion has also been evaluated. In this sense, it has been reported that lifetime can be recovered during the emitter formation either by the effect of the P on extracting impurities, or by the role of the atomic hydrogen on passivating the defects.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Solar Energy Materials and Solar Cells - Volume 124, May 2014, Pages 17-23
Journal: Solar Energy Materials and Solar Cells - Volume 124, May 2014, Pages 17-23
نویسندگان
Elisa GarcÃa-Tabarés, Ignacio Rey-Stolle,