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

Nanoscale-Induced Formation of Silicide around Gold Nanoparticles Encapsulated in a-Si., Lenardi, Cristina, Mayer Justin, Faraone Gabriele, Cardoso Jonathan, Marom Sarita, Modi Ritika, Podestà Alessandro, Kadkhodazadeh Shima, and Di Vece Marcel , Langmuir, 2020 Jan 22, (2020)

Extraction of -, -- and -- Characteristics for -Type Silicon/Intrinsic Ultrananocrystalline Diamond/-Type Nanocrystalline Iron Disilicide Heterojunction Photodiodes., Chaleawpong, Rawiwan, Promros Nathaporn, Charoenyuenyao Peerasil, Hanada Kenji, Chen Li, and Yoshitake Tsuyoshi , J Nanosci Nanotechnol, 2020 Jan 01, Volume 20, Issue 1, p.433-441, (2020)

Effects of Zirconium Silicide on the Vulcanization, Mechanical and Ablation Resistance Properties of Ceramifiable Silicone Rubber Composites., Song, Jiuqiang, Huang Zhixiong, Qin Yan, Wang Honghua, and Shi Minxian , Polymers (Basel), 2020 Feb 24, Volume 12, Issue 2, (2020)

On the Microstructure and Isothermal Oxidation at 800 and 1200 °C of the Nb-24Ti-18Si-5Al-5Cr-5Ge-5Sn (at.%) Silicide-Based Alloy., Hernández-Negrete, Ofelia, and Tsakiropoulos Panos , Materials (Basel), 2020 Feb 05, Volume 13, Issue 3, (2020)

Optimal Nitrogen Incorporation in Nickel Silicide for Thermally Stable Contact Formation., Ji, Hyung Min, Nguyen Manh Cuong, Nguyen An Hoang- Thuy, Cheon Jonggyu, Kim Jin-Hyun, Yu Kyoung-Moon, Kim Sang-Woo, Cho Seong-Yong, Lee Jeong-Hwan, and Choi Rino , J Nanosci Nanotechnol, 2019 Oct 01, Volume 19, Issue 10, p.6468-6472, (2019)

Author Correction: 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, 2019 May, Volume 14, Issue 5, p.495, (2019)

Influence of the Sintering Temperature of Al-Doped Higher Manganese Silicide for Improved Thermoelectric Properties., Son, Si-Young, Baek Yeon-Jin, Beck Ji-Hyun, Kim Jong-Bae, Yang Seung-Ho, Kang Yong-Ho, and Hyun Soong-Keun , J Nanosci Nanotechnol, 2019 Mar 01, Volume 19, Issue 3, p.1699-1703, (2019)

Enhancing silicide formation in Ni/Si(111) by Ag-Si particles at the interface., Chang, Cheng-Hsun-Tony, Jiang Pei-Cheng, Chow Yu-Ting, Hsiao Hsi-Lien, Bin Su Wei-, and Tsay Jyh-Shen , Sci Rep, 2019 Jun 20, Volume 9, Issue 1, p.8835, (2019)

Activations of all Bonds to Silicon (Si-H, Si-C) in a Silane with Extrusion of [CoSiCo] Silicide Cores., Handford, Rex C., Smith Patrick W., and T Tilley Don , J Am Chem Soc, 2019 Jun 05, Volume 141, Issue 22, p.8769-8772, (2019)

Millimeter-Scale Growth of Single-Oriented Graphene on a Palladium Silicide Amorphous Film., Kim, Hyun-Woo, Song Inkyung, Kim Tae-Hoon, Ahn Sung Joon, Shin Ha-Chul, An Byeong-Seon, Jang Yamujin, Jeon Sunam, Kim Eun Hye, Khadka Ishwor Bahadur, et al. , ACS Nano, 2019 Feb 26, Volume 13, Issue 2, p.1127-1135, (2019)

Continuous-Flow Synthesis of Carbon-Coated Silicon/Iron Silicide Secondary Particles for Li-Ion Batteries., Jo, Changshin, Groombridge Alexander S., De La Verpilliere Jean, Lee Jung Tae, Son Yeonguk, Liang Hsin-Ling, Boies Adam M., and De Volder Michael , ACS Nano, 2019 Dec 19, (2019)

High-Pressure Melting Curve of Zintl Sodium Silicide NaSi by In Situ Electrical Measurements., Courac, Alexandre, Le Godec Yann, Renero-Lecuna Carlos, Moutaabbid Hicham, Kumar Ram, Coelho-Diogo Cristina, Gervais Christel, and Portehault David , Inorg Chem, 2019 Aug 19, Volume 58, Issue 16, p.10822-10828, (2019)

On the Microstructure and Isothermal Oxidation of Silica and Alumina Scale Forming Si-23Fe-15Cr-15Ti-1Nb and Si-25Nb-5Al-5Cr-5Ti (at.%) Silicide Alloys., Hernández-Negrete, Ofelia, and Tsakiropoulos Panos , Materials (Basel), 2019 Apr 02, Volume 12, Issue 7, (2019)

Ultrathin, Transferred Layers of Metal Silicide as Faradaic Electrical Interfaces and Biofluid Barriers for Flexible Bioelectronic Implants., Li, Jinghua, Li Rui, Du Haina, Zhong Yishan, Chen Yisong, Nan Kewang, Won Sang Min, Zhang Jize, Huang Yonggang, and Rogers John A. , ACS Nano, 2019 01 22, Volume 13, Issue 1, p.660-670, (2019)

Low-Resistance, High-Yield Electrical Contacts to Atom Scale Si:P Devices Using Palladium Silicide., Schmucker, Scott W., Namboodiri Pradeep N., Kashid Ranjit, Wang Xiqiao, Hu Binhui, Wyrick Jonathan E., Myers Alline F., Schumacher Joshua D., Silver Richard M., and Stewart M D. , Phys Rev Appl, 2019, Volume 11, (2019)