About Silicides

Tantalum Silicide

Silicides are binary compounds of silicon with other more electropositive elements. Chemical bonds in silicides may exhibit primarily covalent or primarily ionic characteristics, depending on the electronegativity of participating elements.

Silicides of many transition metals and all non-transition metals except beryllium have been described; mercury, thallium, bismuth, and lead are nonmiscible with liquid silicon. Transition metal silicides are usually inert to all aqueous solutions with the exception of hydrofluoric acid, but they can react with more aggressive agents such as potassium hydroxide or halogen gases when subjected to extremely high temperatures.

Silicides play important roles in the field of advanced technology. Thin films of metal silicides are integral to the integrated circuits of semiconductor and microelectronics devices, the most common including CoSi2, NiSi2, WSi2, MoSi2, TaSi2, TiSi2., and PtSi, a superconductor and Schottky barrier used in infrared detection and Schottky contacts. These materials are typically synthesized via sputtering deposition of the metal onto a high purity silicon wafer. Alkali metal silicides like sodium silicide generate pure hydrogen when reacted with water or water-based solutions, making them a potentially viableas a clean, sustainable source of hydrogen for fuel cells. Niobium silicide was used to create the first functional printed diode that worked up to the GHz range, and a novel lithium borosilicide (LiBSi2) has been investigated as a promising anode material for lithium-ion batteries that could increase cell capacity.

Recent Research & Development for Silicides

Magnetic Binary Silicide Nanostructures., Goldfarb, Ilan, Cesura Federico, and Dascalu Matan , Adv Mater, 2018 May 02, p.e1800004, (2018)

Alloying and Properties of C14-NbCr₂ and A15-Nb₃X (X = Al, Ge, Si, Sn) in Nb-Silicide-Based Alloys., Tsakiropoulos, Panos , Materials (Basel), 2018 Mar 07, Volume 11, Issue 3, (2018)

Type of Primary Nb5Si3 and Precipitation of Nb in αNb₅Si₃ in a Nb-8.3Ti-21.1Si-5.4Mo-4W-0.7Hf (at.%) Near Eutectic Nb-Silicide-Based Alloy., McCaughey, Conor, and Tsakiropoulos Panos , Materials (Basel), 2018 Jun 07, Volume 11, Issue 6, (2018)

Intermetallic nickel silicide nanocatalyst-A non-noble metal-based general hydrogenation catalyst., Ryabchuk, Pavel, Agostini Giovanni, Pohl Marga-Martina, Lund Henrik, Agapova Anastasiya, Junge Henrik, Junge Kathrin, and Beller Matthias , Sci Adv, 2018 Jun, Volume 4, Issue 6, p.eaat0761, (2018)

On the Alloying and Properties of Tetragonal Nb₅Si₃ in Nb-Silicide Based Alloys., Tsakiropoulos, Panos , Materials (Basel), 2018 Jan 04, Volume 11, Issue 1, (2018)

Alloying and Hardness of Eutectics with Nb and Nb5Si3 in Nb-silicide Based Alloys., Tsakiropoulos, Panos , Materials (Basel), 2018 Apr 11, Volume 11, Issue 4, (2018)

Unidirectional endotaxial cobalt di-silicide nanowires on Si(110) substrates., Mahato, J C., Das Debolina, Banu Nasrin, Satpati Biswarup, and Dev B N. , Nanotechnology, 2017 Oct 20, Volume 28, Issue 42, p.425603, (2017)

Large-format platinum silicide microwave kinetic inductance detectors for optical to near-IR astronomy., Szypryt, P, Meeker S R., Coiffard G, Fruitwala N, Bumble B, Ulbricht G, Walter A B., Daal M, Bockstiegel C, Collura G, et al. , Opt Express, 2017 Oct 16, Volume 25, Issue 21, p.25894-25909, (2017)

Ultra Thin Poly-Si Nanosheet Junctionless Field-Effect Transistor with Nickel Silicide Contact., Lin, Yu-Ru, Tsai Wan-Ting, Wu Yung-Chun, and Lin Yu-Hsien , Materials (Basel), 2017 Nov 07, Volume 10, Issue 11, (2017)

On the diffraction pattern of bundled rare-earth silicide nanowires on Si(0 0 1)., Timmer, F, Bahlmann J, and Wollschläger J , J Phys Condens Matter, 2017 Nov 01, Volume 29, Issue 43, p.435304, (2017)

Study of Lithium Silicide Nanoparticles as Anode Materials for Advanced Lithium Ion Batteries., Li, Xuemin, Kersey-Bronec Faith E., Ke John, Cloud Jacqueline E., Wang Yonglong, Ngo Chilan, Pylypenko Svitlana, and Yang Yongan , ACS Appl Mater Interfaces, 2017 May 17, Volume 9, Issue 19, p.16071-16080, (2017)

Enhanced light absorption in waveguide Schottky photodetector integrated with ultrathin metal/silicide stripe., Guo, Jingshu, Wu Zhiwei, and Zhao Yanli , Opt Express, 2017 May 01, Volume 25, Issue 9, p.10057-10069, (2017)

Magnesium silicide nanoparticles as a deoxygenation agent for cancer starvation therapy., Zhang, Chen, Ni Dalong, Liu Yanyan, Yao Heliang, Bu Wenbo, and Shi Jianlin , Nat Nanotechnol, 2017 May, Volume 12, Issue 4, p.378-386, (2017)

Monolithic porous magnesium silicide., Hayati-Roodbari, N, Berger R J. F., Bernardi J, Kinge S, Hüsing N, and Elsaesser M S. , Dalton Trans, 2017 Jul 11, Volume 46, Issue 27, p.8855-8860, (2017)

Low-Temperature Wet Conformal Nickel Silicide Deposition for Transistor Technology through an Organometallic Approach., Lin, Tsung-Han, Margossian Tigran, De Marchi Michele, Thammasack Maxime, Zemlyanov Dmitry, Kumar Sudhir, Jagielski Jakub, Zheng Li-Qing, Shih Chih-Jen, Zenobi Renato, et al. , ACS Appl Mater Interfaces, 2017 Feb 08, Volume 9, Issue 5, p.4948-4955, (2017)