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Germanium has long been a popular material for integrated circuits. Outside the core area of electronic devices, an EU-funded project is showing its great potential as a substrate to lead next-generation multi-junction solar cells.
Author to whom correspondence should be addressed. In this paper, germanium-based solar cells were designed based on germanium (Ge) materials, and the cross-cone (CC) nanostructures were used as the absorber layer of the solar cells.
The strategic amalgamation of other semiconductor substances like GaAs (Gallium Arsenide) onto the Ge base culminates in multiple junctions that synergistically elevate the overall efficacy of solar cells. Contrasting silicon-based brethren, germanium solar cells showcase reduced recombination frequencies courtesy of superior conductive traits.
The devices obtained in this study have good electrical properties. The VOC of the germanium-based solar cells under the single-junction CC nanostructure absorber structure array is 0.31 V, and the JSC reaches 45.5 mA/cm 2. The FF value of the device can be calculated as 72.7% by Equation (4).
Nonetheless, monetary considerations retain paramount importance while transitioning from laboratory-scale fabrication towards commercialization. In the realm of high-efficiency solar power systems, a profound enigma lies in the utilization of germanium as a semiconductor material.
In our contemporary world where sustainability is paramount, germanium substrates prove advantageous too with their notable recyclability potential without performance degradation – an essential element considering the escalating emphasis on renewable sources like solar power for future energy requirements.
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The η of the device of 10.3% can be reached by Eq. 5. Compared with recent studies on single-junction silicon solar cells [58], the JSC of the Ge-based solar cells increases …
Live ChatIn 2009, van der Heide et al. 31 presented an improved Ge solar cell with a world record efficiency of 7.9% under AM 1.5G spectrum, ... Cost-efficient thermophotovoltaic …
Live ChatComing back to the lack of response in the SiGe bottom cell, it should be noted that the situation here resembles that of a GaInP/Ga(In)As/Ge triple junction solar cell (3JSC) …
Live ChatThis technique has been successfully applied to Ge single and GaInP/Ga(In)As/Ge triple-junction solar cells grown on Ge substrates, achieving 47.5- and …
Live ChatThe Germanium Substrate for Solar Cells Market report includes analysis in terms of both quantitative and qualitative data with a forecast period of the report extending from 2023 to …
Live ChatIn 2022, Lombardero proposed a new solar cell manufacturing process based on a chemical etching method, which can make a substrate thickness of 47.5 um for germanium-based single-junction solar cells and a …
Live ChatThe ''germanium on nothing'' approach taken by the team, described in the paper Germanium-on-Nothing for Epitaxial Liftoff of GaAs Solar Cells – published in the journal Joule – involves the ...
Live Chat140 or 175 μm for solar cells, other thickness available upon request: Diameter 150 mm (6") ... Diameter 200 mm (8") 450 µm or 625 µm, other thickness available upon request: Question about our Germanium substrates? Get in …
Live ChatSince the mid-nineties Umicore has been the recognized market leader in the supply of epi-ready, dislocation-free germanium substrates for III-V multi-junction solar cells. Germanium is the …
Live ChatIII–V solar cells are mainly grown on GaAs or Ge substrate, which significantly contributes to the final cost and affects the sustainable use of these rare materials. A so-called PEELER …
Live ChatJournal Article: High-Efficiency Solar Cells Grown on Spalled Germanium for Substrate Reuse without Polishing ... High-efficiency thin-film InGaP/InGaAs/Ge tandem solar …
Live ChatGaAs Solar Cells. In article number 2300643, Valentin Daniel and co-workers have grown monocrystalline GaAs/Ge epitaxial layers on 100 mm (4") porosified germanium …
Live ChatThe new CPVMatch four-junction solar cell with a germanium substrate achieved 42.6 % efficiency. The project successfully developed and demonstrated other technical building blocks that – put together – will increase …
Live ChatThe potential of a thinned Ge subcell inside a standard GaInP/Ga(In)As/Ge triple-junction solar cell is assessed by simulations, pointing to an optimum thickness around 5–10 μm. This would reduce the weight by …
Live ChatThese values are consistent with those expected for GaAs solar cells on conventional Ge substrate nonporosified. The best cell of this batch has an efficiency of 23.1%, higher than the reported values of the current literature …
Live ChatHere, we describe single-junction GaInAs solar cell devices grown by organometallic vapor phase epitaxy (OMVPE) directly on spalled Ge (hereafter referred to as "sp-Ge") substrates that undergo minimal surface …
Live ChatWe report stand-alone heterojunction (HJ) solar cells with conversion efficiencies of 5.9% and 7.2% on n-type and p-type crystalline germanium (c-Ge) substrates
Live ChatGermanium (Ge) has been identified as one of the major environmental hotspots of ESA''s space missions. As one of the critical raw materials the use of it (mainly driven by solar cells) is a …
Live ChatAbove it are layers of gallium-indium-arsenide and gallium-indium-phosphide. The layers work together to capture different wavelengths of sunlight, and the germanium also …
Live ChatIn the paper "High-efficiency GaAs solar cells grown on porous germanium substrate with PEELER technology," published in RRL Solar, the research team explained …
Live ChatHigh-efficiency heterojunction solar cells on crystalline germanium substrates Bahman Hekmatshoar,a) Davood Shahrjerdi, Marinus Hopstaken, Keith Fogel, and Devendra K. …
Live ChatGe substrates for multijunction solar cells are usually 165-185μm thick and p-type doped 1017-1018 cm-3. The optimum doping level is derived from the Ge minority carrier properties (which …
Live Chat5N Plus produces an InGaP/InGaAs/Ge on Ge substrate triple- junction CPV solar cell product family 3C44-Advanced (efficiency class 44%) including AZUR''s proprietary design to operate at highest concentration levels (1000 suns and …
Live ChatMultijunction solar cells are usually grown on Ge substrates. This implies several disadvantages that hinder the performance of the whole multijunction and limit their possible applications. The …
Live ChatJapanese scientists have developed a heterojunction germanium solar cell with the biggest area ever achieved for the tech. It has an open-circuit voltage of 291 mV, a short …
Live ChatFrom circular to triangular alumina nanopore arrays via simple replication Appl. Phys. Lett. 102, 021601 (2013) Mesoporous germanium morphology transformation for lift-off …
Live Chatgrowth on dissimilar material substrates and the solar cells using the Ge(100) substrate had a lower V OC than those using the Ge(111) substrate, as shown in Fig. 1. By …
Live ChatGermanium has been the preferred substrate in that time because its perfect lattice structure grows solar cells with the best performance. The activity demonstrated that the principle …
Live ChatThe majority of the solar cells used today in space and CPV applications are multijunction solar cells grown on germanium substrates [1]. Among these, the main designs …
Live ChatIII–V solar cells have the highest conversion efficiency of any solar technology, with demonstrated single-junction efficien-cies >29%.[1] However, high production costs keep III–Vs from …
Live ChatGe epitaxial growth on the PGe substrate results in a 700 nm-thick Ge NM structure, composed of the 200 nm-thick LT Ge buffer layer and the 500 nm-thick HT epitaxial …
Live Chattransfer of thin III-V solar cells on Ge film from the Ge substrate to a foreign substrate (E). (F and G) Various types of GON structures such as sphere (F) and plate-type (G) voids can be …
Live ChatInnovations include a method of producing gallium arsenide solar cells with a reusable germanium substrate developed by scientists at the U.S. National Renewable Energy …
Live ChatIn the realm of solar cell production, germanium substrates have unveiled a novel route to amplified power conversion efficiency. Germanium wafers, characterized by their crystalline morphology, epitomize an optimal …
Live ChatFinally, solar cells have been manufactured out of the thinned substrates proving a limited degradation and showing the feasibility of this process to manufacture Ge subcells thinned down up to ...
Live ChatGe substrates are commonly used instead of GaAs sub-strates for growth of III–V multijunction solar cells used for space applications. Controlled spalling of (100)-oriented Ge solves several …
Live ChatWe introduce a novel germanium-on-nothing (GON) technology to fabricate ultrathin Ge films for lightweight and thin GaAs solar cells. GON membranes formed by …
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