单词 | polysilicon |
释义 | polysiliconadj.n. A. adj. Chemistry. Designating compounds containing several or many silicon atoms, often in chains or networks. ΚΠ 1952 Industr. & Engin. Chem. Sept. 1977/1 Polysilicon compounds have been prepared by several workers. 1969 Jrnl. Amer. Chem. Soc. 91 6156 (title) Polylithium compounds from propyne and 1-butyne, and their polysilicon derivatives. 1975 Science 18 July 184/2 It was found that mixtures of Me2SiCl2 and MeSiCl2 can be co-condensed with sodium-potassium alloy to give small amounts of polycyclic materials—the first cage polysilicon compounds. 1989 Jrnl. Organometallic Chem. 379 27 Novel phosphine compounds in which two or more triphenylphosphine units are introduced into a polysilicon chain have been synthesized. 1999 Chem. Materials 11 154/1 Other groups have explored the synthesis of polysilicon nitride from simple alkylsilicon chlorides and amines. B. n. Electronics. A polycrystalline form of silicon used esp. in some solid-state MOS devices. ΚΠ 1969 Official Gaz. (U.S. Patent Office) 6 May 296/2 The device comprises a layer of polysilicon with a silicon dioxide coating covering its edges and plateau. 1989 Electronics (Nexis) Dec. 74 Another Fujitsu team has built a heterojunction bipolar transistor using polycrystalline silicon carbide combined with a 50-nm highly doped polysilicon base. 1990 L. W. Massengill in Internat. Joint Conf. Neural Networks II. 90 Test bars of several of the subcircuits described have been fabricated using the mosis 2μm analog (double polysilicon) process. 2003 Wall St. Jrnl. 5 Nov. b7/2 Intel replaced another mainstay material, polysilicon, which is now used to make the electrodes on each transistor. This is a new entry (OED Third Edition, September 2006; most recently modified version published online March 2022). < adj.n.1952 |
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