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第1633章 冲破摩尔定律(1 / 2)

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摩尔就是摩尔定律,宋河一听三个小组的名字,大概能猜出他们的方向。

“延续摩尔就是缩小晶体管,提高晶体管密度,同时想办法降低制造成本。”杨玉语速飞快,“现在技术节点发展到0.7纳米了,延续摩尔小组的目标是迈过0.5直达0.3,把仿脑超算性能翻五倍以上。”

宋河咋舌,“0.7纳米芯片的制造设备我记得国内就一台,而且还不算成熟,次品率居高不下,仿脑超算目前生产的版本用的还是1纳米到3纳米,越往前越难了,做0.3你们真觉得有把握?”

“大概思路已经有了,具体行不行还得试试。”杨玉用马克笔在白板上画,“晶体管结构前三个阶段,平面场效应晶体管、鳍式场效晶体管再到围栅场效晶体管,我们判断围栅场效晶体管最多到0.7就无法前进了,所以我们试着设计了六种进化版本的晶体管。”

“目前组内呼声比较高的是这一种,王吴刘-鱼栅场效晶体管。灵感来源于一种捕鱼的简易迷宫,层层喇叭口嵌套连接,让鱼出不去。”

白板上画出全新的晶体管示意图,导电沟道和栅极单独标注出来,比起已有的晶体管结构改动巨大,有种火绳枪跨越到机枪的既视感,复杂的吓人。

宋河皱眉端详,气氛微微紧张,周围神童们静静等待院长阅卷。

“设计倒像可行,加工很难啊!现有加工技术是做不出你们这种晶体管的,据我所知EUV遇到大瓶颈了,你们和仿脑芯片公司那边沟通过了吗?”宋河道。

“现有的EUV加工确实到瓶颈了,肯定要换技术,现在用的还是极紫外光加工,波长太长。”杨玉解释,“我们打算从两方面入手,一方面是抛弃现有的EUV,尝试做X光和电子束的光刻机,这两者波长比EUV更短……”

宋河打断她,“硬件制造我不算很懂,没有质疑你们的意思,只是问一问,前几年我听你们相院长提过一嘴,X光的同步辐射源很难搞,造出来可能成本是个天文数字,电子束的串行难以解决,所以这两者都不适合造芯片。”

“以前都是这么认为的,但这些年出现了一些新技术,我们粗略研究之后感觉可能会推动X光和电子束的应用。具体我们也不敢下定论,已经有三十多人派去物院和量子物院蹭课了,从头学相关知识,争取几个月内把本硕博的相关课程吃透。”杨玉道。

“另外我们相信EUV的技术路线肯定走到尽头了,想有大突破必须敢走业界不看好的新路线,相院长上课时给我们讲过LED的历史,业界都在研究砷化镓的时候,何伦亚克执着地去做磷砷化镓,当时的晶体工程师都嘲笑他,说如果他的学位是化学而不是电子工程,就会明白磷砷化镓压根不可能,结果最后何伦亚克一个门外汉真把磷砷化镓给做出来了。”

宋河微笑,“你们也算小门外汉,所以也能做业界判断不能用的X光和电子束,心态很乐观啊!”

“也只能乐观了。”杨玉无奈地笑笑,“好在我们团队够大,不是所有人都在赌这一个方向,除了抛弃现有EUV,我们还有十几个人去化院听课了,准备从光刻胶入手,试试能不能做更好的光刻胶,或者干脆直接找到绕过光刻胶的加工办法。”

“听上去像汽车厂商做不好汽油发动机,决定干脆造一种不烧油的新型发动机。”宋河调侃,“真做出来确实是巨大超越,祝愿你们成功,另两个小组呢?扩展摩尔和超越摩尔,进度如何?”

“扩展摩尔可能是最快出效果的小组,但我们大部分人不看好它,把它当个保底方向,因为它很难达到超算性能翻五倍的要求。”杨玉说。

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