<?xml version="1.0" encoding="UTF-8"?><xml><records><record><source-app name="Biblio" version="7.x">Drupal-Biblio</source-app><ref-type>17</ref-type><contributors><authors><author><style face="normal" font="default" size="100%">Ferhati Hichem</style></author><author><style face="normal" font="default" size="100%">Djeffal Fayçal</style></author></authors></contributors><titles><title><style face="normal" font="default" size="100%"> Role of non-uniform Ge concentration profile in enhancing the efficiency of thin-film SiGe/Si Solar Cells, ISSN 0030-4026</style></title><secondary-title><style face="normal" font="default" size="100%">Optik</style></secondary-title></titles><dates><year><style  face="normal" font="default" size="100%">2018</style></year></dates><urls><web-urls><url><style face="normal" font="default" size="100%">https://www.sciencedirect.com/science/article/abs/pii/S0030402617317187</style></url></web-urls></urls><volume><style face="normal" font="default" size="100%">Volume 158</style></volume><pages><style face="normal" font="default" size="100%">pp 192-198</style></pages><language><style face="normal" font="default" size="100%">eng</style></language><abstract><style face="normal" font="default" size="100%">&lt;div id=&quot;abst0005&quot;&gt;
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		&lt;span&gt;&lt;span&gt;In this paper, graded Ge &lt;a href=&quot;https://www.sciencedirect.com/topics/engineering/mole-fraction&quot; title=&quot;Learn more about Mole Fraction from ScienceDirect's AI-generated Topic Pages&quot;&gt;mole fraction&lt;/a&gt;&lt;span&gt;&lt;span&gt; aspect is proposed as a new way to achieve the dual benefit of improved Si/SiGe-based solar cell photoconversion efficiency and suppressed degradation related-dislocation effects. Our purpose resides mainly on decreasing the &lt;a href=&quot;https://www.sciencedirect.com/topics/engineering/defect-density&quot; title=&quot;Learn more about Defect Density from ScienceDirect's AI-generated Topic Pages&quot;&gt;defect density&lt;/a&gt; at the Si/SiGe interface through shifting the &lt;/span&gt;&lt;a href=&quot;https://www.sciencedirect.com/topics/engineering/ge-concentration&quot; title=&quot;Learn more about Ge Concentration from ScienceDirect's AI-generated Topic Pages&quot;&gt;Ge concentration&lt;/a&gt;&lt;span&gt; gradually with the SiGe &lt;a href=&quot;https://www.sciencedirect.com/topics/engineering/absorber-layer&quot; title=&quot;Learn more about Absorber Layer from ScienceDirect's AI-generated Topic Pages&quot;&gt;absorber layer&lt;/a&gt; thickness. Further, a careful mechanism analysis based on investigating numerically the impact of the proposed graded Ge content paradigm on reducing the degradation related-dislocation effect is performed. The advantage of using a SiGe layer with graded Ge concentration instead of a thin-film SiGe alloys is presented. Moreover, the impact of the proposed SiGe layer thickness on the solar cell conversion efficiency is carried out. It is found that the proposed feature brings the opportunity of reducing the &lt;/span&gt;&lt;/span&gt;&lt;/span&gt;&lt;a href=&quot;https://www.sciencedirect.com/topics/engineering/lattice-mismatch&quot; title=&quot;Learn more about Lattice Mismatch from ScienceDirect's AI-generated Topic Pages&quot;&gt;lattice mismatch&lt;/a&gt; at the Si/SiGe interface, which can in turn improve the Si/SiGe-based solar cell conversion efficiency. In addition, increasing the Ge content progressively suggests the band-gap modulation aspect that enables improving the solar cell &lt;/span&gt;&lt;a href=&quot;https://www.sciencedirect.com/topics/physics-and-astronomy/electromagnetic-absorption&quot; title=&quot;Learn more about Electromagnetic Absorption from ScienceDirect's AI-generated Topic Pages&quot;&gt;optical absorption&lt;/a&gt;&lt;span&gt; and the total resistance. Therefore, the proposed design pinpoints a new path toward avoiding &lt;a href=&quot;https://www.sciencedirect.com/topics/engineering/recombination-loss&quot; title=&quot;Learn more about Recombination Loss from ScienceDirect's AI-generated Topic Pages&quot;&gt;recombination losses&lt;/a&gt; through suppressing the degradation related-dislocation effects, which makes it potential alternative for providing high-efficiency Si-based solar cells.&lt;/span&gt;
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