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ICOP & ICPET 2017, 23 - : 989-992 Back to browse issues page
Study of Multiple Exciton Generation in Silicon and Germanium Nanocrystals
Mahdi Gordi-Armaki Mr * 1, Mohammad Kazem Moravvej-Farshi Professor
Abstract:   (899 Views)

One of the approaches to increase the efficiency of solar cell devices based on semiconductor nanostructures is to use multiple exciton generation (MEG) process, that in certain circumstances, several excitons are generated by the absorption of a single photon. In this paper, we obtain and compare multiple exciton generation in silicon and germanium nanocrystals. Our results with EOM-CCSD method show that MEG process in germanium nanocrystal around 0.8 eV starts earlier than silicon nanocrystal, and its threshold is around 8% lower. The calculated MEG threshold is based on optical bandgap and our results are consistent with experimental reports.

Keywords: Multiple Exciton Generation, Silicon and Germanium nanocrystal
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Type of Study: Research | Subject: Special
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Gordi-Armaki M, Moravvej-Farshi M K. Study of Multiple Exciton Generation in Silicon and Germanium Nanocrystals. ICOP & ICPET. 2017; 23 :989-992
URL: http://opsi.ir/article-1-1400-en.html


Volume 23 - Back to browse issues page
انجمن اپتیک و فوتونیک ایران Optics and Photonics Society of Iran
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