JP7163807B2 - 化合物半導体装置、化合物半導体装置の製造方法及び増幅器 - Google Patents
化合物半導体装置、化合物半導体装置の製造方法及び増幅器 Download PDFInfo
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- JP7163807B2 JP7163807B2 JP2019019110A JP2019019110A JP7163807B2 JP 7163807 B2 JP7163807 B2 JP 7163807B2 JP 2019019110 A JP2019019110 A JP 2019019110A JP 2019019110 A JP2019019110 A JP 2019019110A JP 7163807 B2 JP7163807 B2 JP 7163807B2
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- Y02B70/10—Technologies improving the efficiency by using switched-mode power supplies [SMPS], i.e. efficient power electronics conversion e.g. power factor correction or reduction of losses in power supplies or efficient standby modes
Description
第1の実施形態は、高電子移動度トランジスタ(HEMT)を含む化合物半導体装置に関する。図1は、第1の実施形態に係る化合物半導体装置のレイアウトを示す図である。図2~図4は、第1の実施形態に係る化合物半導体装置の構造を示す断面図である。図2は、図1中のI-I線に沿った断面図に相当し、図3は、図1中のII-II線に沿った断面図に相当し、図4は、図1中のIII-III線に沿った断面図に相当する。
s=1.805×1011×h2/6rt ・・・(1)
第2の実施形態は、HEMTを含む化合物半導体装置に関する。図8は、第2の実施形態に係る化合物半導体装置のレイアウトを示す図である。図9~図10は、第2の実施形態に係る化合物半導体装置の構造を示す断面図である。図9は、図8中のI-I線に沿った断面図に相当し、図10は、図8中のIII-III線に沿った断面図に相当する。
第3の実施形態は、HEMTを含む化合物半導体装置に関する。図11は、第3の実施形態に係る化合物半導体装置のレイアウトを示す図である。図12は、第3の実施形態に係る化合物半導体装置の構造を示す断面図である。図12は、図11中のI-I線に沿った断面図に相当する。
第4の実施形態は、HEMTを含む化合物半導体装置に関する。図13は、第4の実施形態に係る化合物半導体装置のレイアウトを示す図である。図14~図15は、第4の実施形態に係る化合物半導体装置の構造を示す断面図である。図14は、図13中のI-I線に沿った断面図に相当し、図15は、図13中のII-II線に沿った断面図に相当する。
第5の実施形態は、HEMTを含む化合物半導体装置に関する。図16は、第5の実施形態に係る化合物半導体装置のレイアウトを示す図である。図17~図18は、第5の実施形態に係る化合物半導体装置の構造を示す断面図である。図17は、図16中のI-I線に沿った断面図に相当し、図18は、図16中のII-II線に沿った断面図に相当する。
第6の実施形態は、HEMTを含む化合物半導体装置に関する。図19は、第6の実施形態に係る化合物半導体装置のレイアウトを示す図である。
第7の実施形態は、HEMTを含む化合物半導体装置の製造方法に関する。図21A~図21N及び図22A~図22Bは、第7の実施形態に係る化合物半導体装置の製造方法を示す断面図である。図21A~図21Nは、Y方向に垂直な断面を示し、図22A~図22Bは、X方向に垂直な断面を示す。
第7の実施形態の変形例は、ゲート電極12gの形成方法の点で第7の実施形態と相違する。図23A~図23Cは、第7の実施形態に係る化合物半導体装置の製造方法の変形例を示す断面図である。
次に、第8の実施形態について説明する。第8の実施形態は、HEMTのディスクリートパッケージに関する。図25は、第8の実施形態に係るディスクリートパッケージを示す図である。
次に、第9の実施形態について説明する。第9の実施形態は、HEMTを備えたPFC(Power Factor Correction)回路に関する。図26は、第9の実施形態に係るPFC回路を示す結線図である。
次に、第10の実施形態について説明する。第10の実施形態は、サーバ電源に好適な、HEMTを備えた電源装置に関する。図27は、第10の実施形態に係る電源装置を示す結線図である。
次に、第11の実施形態について説明する。第11の実施形態は、HEMTを備えた増幅器に関する。図28は、第11の実施形態に係る増幅器を示す結線図である。
化合物半導体の電子走行層及び電子供給層を含む半導体積層構造と、
前記半導体積層構造の上方に設けられ、第1の方向に並ぶソース電極、ゲート電極及びドレイン電極と、
前記ゲート電極と前記ドレイン電極との間で前記半導体積層構造上に形成され、第1の内部応力を備えた第1の絶縁膜と、
を有し、
前記第1の絶縁膜には、前記第1の方向に延びるスリットが形成されていることを特徴とする化合物半導体装置。
(付記2)
前記スリット内に形成され、前記第1の内部応力とは逆方向の第2の内部応力を備えた第2の絶縁膜を有することを特徴とする付記1に記載の化合物半導体装置。
(付記3)
前記第1の内部応力は引張応力であることを特徴とする付記1又は2に記載の化合物半導体装置。
(付記4)
前記電子供給層は金属窒化物を含み、
前記金属窒化物中の金属原子のうち32%以上がAlであることを特徴とする付記1乃至3のいずれか1項に記載の化合物半導体装置。
(付記5)
前記金属窒化物中の金属原子のうち50%以上がAlであることを特徴とする付記4に記載の化合物半導体装置。
(付記6)
前記電子供給層の厚さは10nm以下であることを特徴とする付記4又は5に記載の化合物半導体装置。
(付記7)
前記第1の方向で、前記スリットが前記ゲート電極から離間していることを特徴とする付記1乃至6のいずれか1項に記載の化合物半導体装置。
(付記8)
前記第1の方向で、前記スリットが前記ゲート電極から0.2μm以上離間していることを特徴とする付記7に記載の化合物半導体装置。
(付記9)
前記半導体積層構造と前記第1の絶縁膜との間に形成された保護膜を有することを特徴とする付記1乃至8のいずれか1項に記載の化合物半導体装置。
(付記10)
前記保護膜は前記スリットの下方にも形成されていることを特徴とする付記9に記載の化合物半導体装置。
(付記11)
化合物半導体の電子走行層及び電子供給層を含む半導体積層構造を形成する工程と、
前記半導体積層構造の上方に、第1の方向に並ぶソース電極、ゲート電極及びドレイン電極を形成する工程と、
前記ゲート電極と前記ドレイン電極との間で前記半導体積層構造上に、第1の内部応力を備え、前記第1の方向に延びるスリットが形成された第1の絶縁膜を形成する工程と、
を有することを特徴とする化合物半導体装置の製造方法。
(付記12)
付記1乃至10のいずれか1項に記載の化合物半導体装置を有することを特徴とする増幅器。
2、102:半導体積層構造
2c、102c:電子走行層
2e、102e:電子供給層
4、404:保護膜
5、105:引張応力膜
10、110、310、610:スリット
11s、111s:ソース電極
11d、111d:ドレイン電極
12g、112g:ゲート電極
100、200、300、400、500、600:化合物半導体装置
201、605:圧縮応力膜
Claims (10)
- 化合物半導体の電子走行層及び電子供給層を含む半導体積層構造と、
前記半導体積層構造の上方に設けられ、第1の方向に並ぶソース電極、ゲート電極及びドレイン電極と、
前記ゲート電極と前記ドレイン電極との間で前記半導体積層構造上に形成され、第1の内部応力を備えた第1の絶縁膜と、
を有し、
前記第1の絶縁膜には、前記第1の方向に延びるスリットが形成されており、
前記スリット内に形成され、前記第1の内部応力とは逆方向の第2の内部応力を備えた第2の絶縁膜を有することを特徴とする化合物半導体装置。 - 化合物半導体の電子走行層及び電子供給層を含む半導体積層構造と、
前記半導体積層構造の上方に設けられ、第1の方向に並ぶソース電極、ゲート電極及びドレイン電極と、
前記ゲート電極と前記ドレイン電極との間で前記半導体積層構造上に形成され、第1の内部応力を備えた第1の絶縁膜と、
を有し、
前記第1の絶縁膜には、前記第1の方向に延びるスリットが形成されており、
前記第1の内部応力は引張応力であることを特徴とする化合物半導体装置。 - 前記スリット内に形成され、前記第1の内部応力とは逆方向の第2の内部応力を備えた第2の絶縁膜を有することを特徴とする請求項2に記載の化合物半導体装置。
- 前記電子供給層は金属窒化物を含み、
前記金属窒化物中の金属原子のうち32%以上がAlであることを特徴とする請求項1乃至3のいずれか1項に記載の化合物半導体装置。 - 前記電子供給層の厚さは10nm以下であることを特徴とする請求項4に記載の化合物半導体装置。
- 前記第1の方向で、前記スリットが前記ゲート電極から離間していることを特徴とする請求項1乃至5のいずれか1項に記載の化合物半導体装置。
- 前記半導体積層構造と前記第1の絶縁膜との間に形成された保護膜を有することを特徴とする請求項1乃至6のいずれか1項に記載の化合物半導体装置。
- 化合物半導体の電子走行層及び電子供給層を含む半導体積層構造を形成する工程と、
前記半導体積層構造の上方に、第1の方向に並ぶソース電極、ゲート電極及びドレイン電極を形成する工程と、
前記ゲート電極と前記ドレイン電極との間で前記半導体積層構造上に、第1の内部応力を備え、前記第1の方向に延びるスリットが形成された第1の絶縁膜を形成する工程と、
前記スリット内に、前記第1の内部応力とは逆方向の第2の内部応力を備えた第2の絶縁膜を形成する工程と、
を有することを特徴とする化合物半導体装置の製造方法。 - 化合物半導体の電子走行層及び電子供給層を含む半導体積層構造を形成する工程と、
前記半導体積層構造の上方に、第1の方向に並ぶソース電極、ゲート電極及びドレイン電極を形成する工程と、
前記ゲート電極と前記ドレイン電極との間で前記半導体積層構造上に、第1の内部応力を備え、前記第1の方向に延びるスリットが形成された第1の絶縁膜を形成する工程と、
を有し、
前記第1の内部応力は引張応力であることを特徴とする化合物半導体装置の製造方法。 - 請求項1乃至7のいずれか1項に記載の化合物半導体装置を有することを特徴とする増幅器。
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JP2011091406A (ja) | 2009-10-26 | 2011-05-06 | Infineon Technologies Austria Ag | 横型hemtおよび横型hemtの製造方法 |
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