JP2011096980A - 半導体装置およびその製造方法 - Google Patents
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Abstract
【解決手段】本発明の一態様に係る半導体装置100は、基板と、基板の上方に設けられ、積層された複数のグラフェンナノリボンシート122からなるグラフェンナノリボン層121を含む下層配線12と、複数のグラフェンナノリボンシート122の少なくとも1枚を貫通し、下層配線12と上層配線13とを接続するビア14およびバリアメタル15と、を有する。
【選択図】図1
Description
(半導体装置の構成)
図1(a)は、本発明の第1の実施の形態に係る半導体装置100の垂直断面図である。図1(b)は、図1(a)の線分A−Aに沿った半導体装置100の水平断面図である。
図3A(a)〜(d)、図3B(e)〜(g)は、本発明の第1の実施の形態に係る半導体装置100の製造工程を示す断面図である。
本発明の第1の実施の形態によれば、下層配線12および上層配線13がGNR層121、131を含むため、グラフェンのバリスティック伝導性を利用して電気抵抗を低減することができる。
第2の実施の形態は、配線が積層された複数のGNR層を有する点において、第1の実施の形態と異なる。なお、第1の実施の形態と同様の点については、説明を省略または簡略化する。
図4は、本発明の第2の実施の形態に係る半導体装置200の垂直断面図である。
本発明の第2の実施の形態によれば、下層配線22が、触媒層220A、220BおよびGNR層221A、221Bからなる、触媒層とGNR層の組を2つ重ねた構造を有するため、下層配線22の伝導特性をより向上させることができる。また、上層配線23が、触媒層230A、230BおよびGNR層231A、231Bからなる、触媒層とGNR層の組を2つ重ねた構造を有するため、上層配線23の伝導特性をより向上させることができる。
第3の実施の形態は、複数の上層配線が下層配線に接続される点において、第2の実施の形態と異なる。なお、第2の実施の形態と同様の点については、説明を省略または簡略化する。
図5は、本発明の第3の実施の形態に係る半導体装置300の垂直断面図である。
図6A(a)〜(d)、図6B(e)〜(g)は、本発明の第3の実施の形態に係る半導体装置300の製造工程を示す断面図である。
本発明の第3の実施の形態によれば、下層配線32が、ビア34A、34B、34Cが接続されたGNRシートと、ビア34A、34Cのみが接続されたGNRシートを含むことにより、ビア34Cとビア34Aの間、およびビア34Cとビア34Bの間にバリスティック伝導が妨げられない経路を形成することができる。
本発明は、上記実施の形態に限定されず、発明の主旨を逸脱しない範囲内において種々変形実施が可能である。
Claims (5)
- 基板と、
前記基板の上方に設けられ、積層された複数のグラフェンナノリボンシートからなるグラフェンナノリボン層を含む配線と、
前記複数のグラフェンナノリボンシートの少なくとも1枚を貫通し、前記配線と前記配線の上層または下層の導電部材とを接続する配線接続部材と、
を有する半導体装置。 - 前記配線は、積層された2つ以上の前記グラフェンナノリボン層を含み、
前記2つ以上のグラフェンナノリボン層はそれぞれ触媒層上に設けられている、
請求項1に記載の半導体装置。 - 前記配線接続部材は、第1の配線接続部材、第2の配線接続部材、および前記第1の配線接続部材と前記第2の配線接続部材の間に位置する第3の配線接続部材を含み、
前記複数のグラフェンナノリボンシートは、前記第1、第2および第3の配線接続部材が接続されたグラフェンナノリボンシートと、前記第1、第2および第3の配線接続部材のうち前記第1および第2の配線接続部材のみが接続されたグラフェンナノリボンシートを含む、
請求項1または2に記載の半導体装置。 - 基板の上方に、積層された複数のグラフェンナノリボンシートからなるグラフェンナノリボン層を含む配線を形成する工程と、
前記複数のグラフェンナノリボンシートの少なくとも1枚を貫通する孔を形成する工程と、
前記孔に導電部材を埋め込んで、前記配線と前記配線の上層または下層の導電部材とを接続する配線接続部材を形成する工程と、
を含む半導体装置の製造方法。 - 前記配線は、積層された2つ以上の前記グラフェンナノリボン層を含み、
前記2つ以上のグラフェンナノリボン層はそれぞれ触媒層上に設けられ、それぞれ前記触媒層を触媒として成長したグラフェンからなる、
請求項4に記載の半導体装置の製造方法。
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