Mg2Si is the new black: Introducing a black silicide with >95% average absorption at 200–1800 nm wavelengths

Textured Stainless Steel as a Platform for Black Mg2Si/Si Heterojunction Solar Cells with Advanced Photovoltaic Performance

“…As a result, the b-SS/Fe 3 O 4 /Si/Mg 2 Si/CaSi 2 prototype HSC was found to possess the highest PV performance with a PCE of 7.5%, J sc = 25.97 mA/cm 2 , FF = 55.9% and V oc = 0.477 V, thus, confirming the feasibility of the proposed approach of the direct integration of black solar light absorbers with textured back reflectors without any isolation layers for preventing uncontrolled diffusion and other accompanying issues. The PCE achieved for the black Si/Mg 2 Si tandem not only demonstrates a 30-fold increase in PV performance compared with its flat counterpart [ 29 ], but also keeps pace with other state-of-the-art SCs fabricated on other construction-compatible substrate materials. Moreover, the b-SS/Fe 3 O 4 /Si templates that were also used in the current study create an opportunity for a simple, low-cost approach for the fabrication of substrate-supported black Si structures for flexible and other feasible applications.…”

“…On one hand, Mg 2 Si possesses outstanding optoelectronic properties to be applied as a VIS-NIR light absorber and photodetector with high Si-compatibility [ 46 , 47 , 48 , 49 , 50 , 51 ]. On the other hand, we have already demonstrated that silicidation of the textured Si surface such as b-Si with magnesium resulted in a new wide band optical absorber called “black silicide” [ 29 ], demonstrating a very high PV potential. Thus, it seemed natural to extend this paradigm beyond b-Si substrates towards more cost-efficient ones, such as b-SS/Fe 3 O 4 /Si, considered in the present study.…”

“…The resultant SS/Fe 3 O 4 /Si templates demonstrated competitive antireflection properties without needing to deposit any intermediate layers. In addition, we further exploited our concepts of the black silicide [ 29 ], which deals with semiconducting magnesium silicide (Mg 2 Si) formation atop a textured Si surface, and optically transparent calcium disilicide (CaSi 2 ) [ 30 ] that acts as a top electrode, to demonstrate a prototype Si-silicide heterojunction solar cell (HSC) with the black-SS/Fe 3 O 4 /Si/Mg 2 Si/CaSi 2 structure. The former concept is devoted to the silicidation of the Si surface textures, which results in the preservation of the original morphology, while providing unprecedented near-infrared (NIR) antireflection performance.…”

Актуальные Проблемы Физики Полупроводников: Наноструктуры, Эпитаксия, Фотоника И Электроника. Научные Результаты ИФП СО РАН За 2022 Год

“…Результаты экспериментов на вычислительном кластере с NUMA-архитектурой вычислительных узлов, включающих два 8 ядерных процессоров Intel Xeon E5620, объединенных шиной Intel QuickPath Interconnect (QPI) с сетевыми адаптерами стандарта Infi niBand QDR представлены на Рис. 144. Результаты экспериментов на вычислительном кластере с SMP-архитектурой вычислительных узлов, включающих два 8 ядерных процессоров Intel Xeon E5420 сетевыми адаптерами стандарта Gigabit Ethernet представлены на Рис.…”

“…Рис 144 . Время выполнения операции All-to-all вычислительном кластере с NUMA-узлами в зависимости от расположения процессов по вычислительным ядрам: (а) требуемая подсистема из 6 процессорных ядер; (б) требуемая подсистема из 12 процессорных ядер.…”