电子制造业建立在硅上。 然而,作为半导体,其性能远非理想。 现在,研究人员发现一种神秘物质,叫做立方砷化硼(c-BAs),其性能可能大大超过硅。 事实上,它可能是有史以来发现的最好的半导体,也可能是有史以来最好的半导体。 地球上最普遍的元素之一是硅。 硅是许多现代技术所必需的,从微芯片到太阳能电池。

然而,其半导体特性远非理想。 “我们首次展示了载流子迁移率高、热传导率高的新材料。” 首先,硅在热传导方面的表现很差。 因此,计算机经常经历过热,需要昂贵的冷却系统。 尽管电子很容易通过硅的结构,但空穴——带正电荷的电子缺失——却不受欢迎。 由于这些缺陷,硅作为半导体整体效率较低。 2018年,有研究结果表明,由相对丰富的矿物质硼和砷构成的晶体c-BAs的导热能力是硅的近10倍。 在金刚石和同位素富集立方氮化硼之后,这是任何半导体中最知名的导热系数,也是任何材料中最知名的导热系数。

此外,理论预测表明,c-BAs将具有极高的电子和空穴迁移率。 实验现在支持立方砷化硼的高电子和空穴迁移率,在7月22日的《科学》杂志上发表的两项研究中显示。 这两项研究的合著者、休斯顿大学的物理学家任志峰说:”我们首次证明了一种高载流子迁移率和高导热率的新材料。” 研究结果”为半导体产业指明了可能很快发生革命的新方向。” 由于晶体尺寸小,研究人员很难分析碳原子吸收体的电子和空穴迁移率。 晶体也被杂质覆盖,这些杂质分散了电子和空穴。 由休斯顿大学、麻省理工学院、德克萨斯大学奥斯汀分校、波士顿学院等组成的研究组发现,杂质最少的晶格上的位置是电子和电子空穴迁移率最高的地方。 电子和空穴迁移率的测量单位为每伏秒平方厘米(厘米2/V•s)。

在室温下,硅的电子迁移率为1400cm2/V,空穴迁移率为450cm2/V。 新的结果表明,在室温下,电子和空穴在1,600cm2/V·s的迁移率下可以同时运动。 此外,《科学》杂志最近发表的两项研究之一发现,c-BAs中的电子迁移率可提高到3,000平方厘米/伏。 这一成就可能归因于”热电子”,它比大多数其他材料中保持激光脉冲产生的能量,激光脉冲用于激发电荷载流子的时间要长。

迄今为止,只生产了几批小的、不规则的实验室规模的c-bas。 然而,鉴于硼、砷和晶体制造工艺的成本低,任认为它很有可能以实用和成本效益高的方式制造。 他认为,晶体的尺寸过大,只有在完全了解生长过程的情况下,才能允许其结垢,以保持质量控制。 任教授补充道:”我们小组一直认为,当晶体质量进一步提高时,应该实现更高的热传导率和更高的迁移率,因此,近期的目标是改善它们的生长,以获得更高质量的晶体。”

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https://www.marketwatch.com/press-release/the-blown-film-lines-market-research-report-company-profiles-and-market-share-analysis-of-the-prominent-players-2022-12-14
https://www.marketwatch.com/press-release/the-laser-tracking-system-report-identifies-the-leading-companies-and-provides-analysis-of-key-factors-influencing-this-industry-such-as-current-market-trends-market-forecast-opportunities-and-economic-trends-that-will-affect-the-marketplace-in-the-future-2022-12-14
https://www.marketwatch.com/press-release/our-market-report-on-packaging-drums-comes-with-a-thorough-analysis-of-industry-trends-share-size-growth-and-opportunity-of-the-market-2022-12-14
https://www.marketwatch.com/press-release/the-market-study-titled-hammerhead-tower-cranes-market—global-industry-analysis-size-share-growth-trends-and-forecast-2022—2028-2022-12-14

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