$\"\"$ WASHINGTON<\/a>: Scientists have developed a greener and cheaper way to make single-crystalline semiconductor films, components at the heart of our electric gadgets, including smartphones, computers and solar panels.
\n
\nThe fastest integrated circuits feature transistors consisting of germanium films on silicon.
\n
\nHowever, such materials are typically only prepared at elevated temperatures, with complex machinery that involve hazardous gases.
\n
Researchers at University of Michigan<\/a> (UM) in the US invented a method to simultaneously synthesise and deposit crystalline semiconductor films from water at room temperatures using equipment that can be assembled for just a few dollars.
\n
\n\"Our method does not require excess heat, and everything is done in an aqueous solution so we are not using any toxic precursors,\" said Stephen Maldonado, an associate professor at UM.
\n
\n\"And we are doing this without sacrificing any quality in the crystallinity of the material, which is usually the trade-off,\" said Maldonado.
\n
\nTo do this, Maldonado and his team make a thin, liquid metal film that rests on a substrate that they connect to a power supply.
\n
\nWhen they electrify the metal film, molecules on the surface of that film - if they are in contact with water - can be reduced into their elemental parts.
\n
\nIn this case, units of dissolved germanium oxide are transformed into germanium atoms that dissolve into the liquid metal film.
\n
\n\"If the liquid metal film is thin enough, the germanium atoms will precipitate out, but selectively at the bottom and as a uniform crystalline film,\" Maldonado said.
\n
\n\"The cool thing about this is we are taking an oxidised precursor - like what you'd find in nature - and in one process step, we can produce a technologically relevant film that is one large contiguous crystal,\" he said.
\n
\nThe team's next steps will be to do the same process with silicon. The chemistry is more nuanced but the principle is the same.
\n
Ultimately, without complex machinery and high temperatures, the new process could provide a cheaper, greener way to produce semiconductors<\/a>.
\n
\n\"There is a reason why everyone on the face of this planet does not have access to advanced electronics. Making high performance semiconductor devices requires a substantial infrastructure,\" Maldonado said.
\n
\nThe research was published in the Journal of the American Chemical Society.
\n\n<\/body>","next_sibling":[{"msid":58677890,"title":"Bharti Airtel drives PE investments in India; April sees deals worth $3.16 billion","entity_type":"ARTICLE","link":"\/news\/bharti-airtel-drives-pe-investments-in-india-april-sees-deals-worth-3-16-billion\/58677890","category_name":null,"category_name_seo":"telecomnews"}],"related_content":[],"msid":58677959,"entity_type":"ARTICLE","title":"Cheaper, greener way to grow semiconductor films found","synopsis":"Researchers at University of Michigan (UM) in the US invented a method to simultaneously synthesise and deposit crystalline semiconductor films from water at room temperatures using equipment that can be assembled for just a few dollars.","titleseo":"telecomnews\/cheaper-greener-way-to-grow-semiconductor-films-found","status":"ACTIVE","authors":[],"Alttitle":{"minfo":""},"artag":"PTI","artdate":"2017-05-15 09:08:29","lastupd":"2017-05-15 09:09:35","breadcrumbTags":["Green Technology","Washington","University of Michigan","Telecom equipment","semiconductors","clean technology"],"secinfo":{"seolocation":"telecomnews\/cheaper-greener-way-to-grow-semiconductor-films-found"}}" data-authors="[" "]" data-category-name="" data-category_id="" data-date="2017-05-15" data-index="article_1">

Telecom乐动扑克News

更便宜、更环保的方式生长半导体薄膜

密歇根大学的研究人员在美国(嗯)发明了一种方法来同时合成和沉积晶体半导体电影从水在室温下使用设备,可以组装几美元。

PTI

更新2017年5月15日09:09点坚持

华盛顿:科学家已经开发出一种更环保、更便宜的方法,使单个水晶半导体电影,组件的核心电气设备,包括智能手机、电脑和太阳能电池板。

最快的集成电路功能的晶体管组成的硅锗薄膜。

然而,这些材料通常只准备在升高的温度下,涉及危险气体的复杂机械。

研究人员密歇根大学(嗯)在美国发明了一种方法来同时合成和沉积晶体半导体电影从水在室温下使用设备,可以组装几美元。

“我们的方法不需要多余的热量,一切都是在水溶液中我们不使用任何有毒的前兆,”Stephen Maldonado说嗯副教授。

”,我们这样做是在不牺牲任何质量材料的结晶度,通常是权衡,“Maldonado说。

为此,Maldonado和他的团队做一个薄,液态金属薄膜,取决于衬底连接到一个电源。

使金属薄膜时,分子表面的那部电影——如果他们接触水可以减少到他们的基本部分。

在这种情况下,溶解氧化锗的单位转换为锗原子溶解到液体金属薄膜。

“如果液态金属电影足够薄,锗原子将加速,但选择性底部均匀晶体薄膜,”Maldonado说。

”这是很酷的事情,我们正在采取一种氧化前体——就像在大自然中,你会发现,在一个流程步骤中,我们可以生产技术相关的电影,是一个大的连续晶体,”他说。

团队的下一个步骤将是用硅做相同的过程。化学更为微妙,但原理是相同的。

最终,没有复杂的机械和高温,新工艺可以提供更便宜,更环保的生产方式半导体。

“为什么每个人都面对这个星球上没有获得先进的电子技术。制造高性能半导体设备需要大量的基础设施,”Maldonado说。

这项研究发表在《美国化学学会》杂志上。

发布于2017年5月15日09:08点坚持

$\"\"$ WASHINGTON<\/a>: Scientists have developed a greener and cheaper way to make single-crystalline semiconductor films, components at the heart of our electric gadgets, including smartphones, computers and solar panels.
\n
\nThe fastest integrated circuits feature transistors consisting of germanium films on silicon.
\n
\nHowever, such materials are typically only prepared at elevated temperatures, with complex machinery that involve hazardous gases.
\n
Researchers at University of Michigan<\/a> (UM) in the US invented a method to simultaneously synthesise and deposit crystalline semiconductor films from water at room temperatures using equipment that can be assembled for just a few dollars.
\n
\n\"Our method does not require excess heat, and everything is done in an aqueous solution so we are not using any toxic precursors,\" said Stephen Maldonado, an associate professor at UM.
\n
\n\"And we are doing this without sacrificing any quality in the crystallinity of the material, which is usually the trade-off,\" said Maldonado.
\n
\nTo do this, Maldonado and his team make a thin, liquid metal film that rests on a substrate that they connect to a power supply.
\n
\nWhen they electrify the metal film, molecules on the surface of that film - if they are in contact with water - can be reduced into their elemental parts.
\n
\nIn this case, units of dissolved germanium oxide are transformed into germanium atoms that dissolve into the liquid metal film.
\n
\n\"If the liquid metal film is thin enough, the germanium atoms will precipitate out, but selectively at the bottom and as a uniform crystalline film,\" Maldonado said.
\n
\n\"The cool thing about this is we are taking an oxidised precursor - like what you'd find in nature - and in one process step, we can produce a technologically relevant film that is one large contiguous crystal,\" he said.
\n
\nThe team's next steps will be to do the same process with silicon. The chemistry is more nuanced but the principle is the same.
\n
Ultimately, without complex machinery and high temperatures, the new process could provide a cheaper, greener way to produce semiconductors<\/a>.
\n
\n\"There is a reason why everyone on the face of this planet does not have access to advanced electronics. Making high performance semiconductor devices requires a substantial infrastructure,\" Maldonado said.
\n
\nThe research was published in the Journal of the American Chemical Society.
\n\n<\/body>","next_sibling":[{"msid":58677890,"title":"Bharti Airtel drives PE investments in India; April sees deals worth $3.16 billion","entity_type":"ARTICLE","link":"\/news\/bharti-airtel-drives-pe-investments-in-india-april-sees-deals-worth-3-16-billion\/58677890","category_name":null,"category_name_seo":"telecomnews"}],"related_content":[],"msid":58677959,"entity_type":"ARTICLE","title":"Cheaper, greener way to grow semiconductor films found","synopsis":"Researchers at University of Michigan (UM) in the US invented a method to simultaneously synthesise and deposit crystalline semiconductor films from water at room temperatures using equipment that can be assembled for just a few dollars.","titleseo":"telecomnews\/cheaper-greener-way-to-grow-semiconductor-films-found","status":"ACTIVE","authors":[],"Alttitle":{"minfo":""},"artag":"PTI","artdate":"2017-05-15 09:08:29","lastupd":"2017-05-15 09:09:35","breadcrumbTags":["Green Technology","Washington","University of Michigan","Telecom equipment","semiconductors","clean technology"],"secinfo":{"seolocation":"telecomnews\/cheaper-greener-way-to-grow-semiconductor-films-found"}}" data-news_link="//www.iser-br.com/news/cheaper-greener-way-to-grow-semiconductor-films-found/58677959">