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)

Shape and Orientation Controlled Hydrothermal Synthesis of Silicide and Metal Dichalcogenide on a Silicon Substrate., Ahmed, Sohail, Ding Xiang, Chu Xueze, Li Mengyao, Chu Dewei, Ma Tianyi, Wu Tom, Vinu Ajayan, and Yi Jiabao , ACS Appl Mater Interfaces, 2020 Apr 22, Volume 12, Issue 16, p.18850-18858, (2020)

Interfacial Silicide Formation and Stress Evolution during Sputter Deposition of Ultrathin Pd Layers on a-Si., Krause, Bärbel, Abadias Gregory, Furgeaud Clarisse, Michel Anny, Resta Andrea, Coati Alessandro, Garreau Yves, Vlad Alina, Hauschild Dirk, and Baumbach Tilo , ACS Appl Mater Interfaces, 2019 Oct 23, Volume 11, Issue 42, p.39315-39323, (2019)

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)

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)

Copper Silicide Nanowires as Hosts for Amorphous Si Deposition as a Route to Produce High Capacity Lithium-Ion Battery Anodes., Stokes, Killian, Geaney Hugh, Sheehan Martin, Borsa Dana, and Ryan Kevin M. , Nano Lett, 2019 12 11, Volume 19, Issue 12, p.8829-8835, (2019)