JP6722698B2 - 高電圧半導体素子及びその素子を製造する方法 - Google Patents
高電圧半導体素子及びその素子を製造する方法 Download PDFInfo
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- 238000004519 manufacturing process Methods 0.000 title claims description 9
- 239000004065 semiconductor Substances 0.000 title description 19
- 239000010410 layer Substances 0.000 claims description 142
- 229910052751 metal Inorganic materials 0.000 claims description 65
- 239000002184 metal Substances 0.000 claims description 65
- 238000000151 deposition Methods 0.000 claims description 46
- 239000000463 material Substances 0.000 claims description 31
- 230000008021 deposition Effects 0.000 claims description 26
- 238000000034 method Methods 0.000 claims description 22
- 239000003989 dielectric material Substances 0.000 claims description 20
- 239000000758 substrate Substances 0.000 claims description 18
- 108091006146 Channels Proteins 0.000 claims description 16
- 239000011229 interlayer Substances 0.000 claims description 15
- 238000001465 metallisation Methods 0.000 claims description 15
- 230000002093 peripheral effect Effects 0.000 claims description 15
- 230000008569 process Effects 0.000 claims description 14
- 239000002019 doping agent Substances 0.000 claims description 8
- 230000007480 spreading Effects 0.000 claims description 6
- 238000003892 spreading Methods 0.000 claims description 6
- 108010075750 P-Type Calcium Channels Proteins 0.000 claims description 5
- 230000015572 biosynthetic process Effects 0.000 claims description 4
- 238000005137 deposition process Methods 0.000 claims description 4
- 238000007740 vapor deposition Methods 0.000 claims description 3
- 239000007943 implant Substances 0.000 description 21
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 20
- 238000010586 diagram Methods 0.000 description 14
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 14
- 229910010271 silicon carbide Inorganic materials 0.000 description 14
- 235000012239 silicon dioxide Nutrition 0.000 description 10
- 239000000377 silicon dioxide Substances 0.000 description 10
- 239000010936 titanium Substances 0.000 description 8
- 238000005530 etching Methods 0.000 description 7
- 239000011295 pitch Substances 0.000 description 7
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 6
- 229910052719 titanium Inorganic materials 0.000 description 6
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 6
- 229910052721 tungsten Inorganic materials 0.000 description 6
- 239000010937 tungsten Substances 0.000 description 6
- 229910052782 aluminium Inorganic materials 0.000 description 5
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 5
- 230000000903 blocking effect Effects 0.000 description 5
- 238000009792 diffusion process Methods 0.000 description 5
- NRTOMJZYCJJWKI-UHFFFAOYSA-N Titanium nitride Chemical compound [Ti]#N NRTOMJZYCJJWKI-UHFFFAOYSA-N 0.000 description 4
- 238000005468 ion implantation Methods 0.000 description 4
- 230000000873 masking effect Effects 0.000 description 4
- 238000000059 patterning Methods 0.000 description 4
- 125000006850 spacer group Chemical group 0.000 description 4
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 3
- 238000000137 annealing Methods 0.000 description 3
- 230000015556 catabolic process Effects 0.000 description 3
- 239000000945 filler Substances 0.000 description 3
- 238000000206 photolithography Methods 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- 239000010703 silicon Substances 0.000 description 3
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 230000005684 electric field Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005669 field effect Effects 0.000 description 2
- 238000002513 implantation Methods 0.000 description 2
- 229910044991 metal oxide Inorganic materials 0.000 description 2
- 150000004706 metal oxides Chemical class 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 229910021420 polycrystalline silicon Inorganic materials 0.000 description 2
- 229920005591 polysilicon Polymers 0.000 description 2
- 230000009467 reduction Effects 0.000 description 2
- 239000007858 starting material Substances 0.000 description 2
- 238000012546 transfer Methods 0.000 description 2
- 230000004913 activation Effects 0.000 description 1
- -1 but not limited to Substances 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 238000001312 dry etching Methods 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- 238000012856 packing Methods 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000007517 polishing process Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 230000001360 synchronised effect Effects 0.000 description 1
- 238000005019 vapor deposition process Methods 0.000 description 1
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Description
複数のMOSFETセルと、
n型ショットキー領域と、
ソース金属層と、
ショットキー金属層と、を備え、
MOSFETセルの各々は、
第一及び第二p型ウェル領域と、
n型JFET領域と、
第一及び第二n型ソース領域と、
ソースオーム接点と、
ゲート誘電層と、
ゲート層と、
層間絶縁膜層と、
第一及び第二p型本体接触領域と、を備え、
上記第一及び第二p型ウェル領域は、上記n型ドリフト層上において間隔を置いて設置される関係にあり、
上記n型JFET領域は、上記第一及び第二p型ウェル領域間の上記n型ドリフト層上にあり、
上記第一及び第二p型ウェル領域の各々は、上記JFET領域に隣接したチャネル領域を備え、
上記第一及び第二n型ソース領域は、上記第一及び第二p型ウェル領域の各々上にあり且つ上記JFET領域とは反対側の上記チャネル領域に隣接しており、
上記第一及び第二n型ソース領域は、上記n型ドリフト層よりもドーパント濃度が高く、
上記ソースオーム接点は、上記第一及び第二n型ソース領域の各々上にあり、
上記ゲート誘電層は、上記JFET領域及びチャネル領域上にあり、
上記ゲート層は、上記ゲート誘電層上にあり、
上記層間絶縁膜層は、上記ゲート層上にあり、
上記第一及び第二p型本体接触領域は、上記n型ドリフト層上にあり且つ上記チャネル領域とは反対側の第一及び第二n型ソース領域に隣接しており、
上記第一及び第二p型本体接触領域は、上記第一及び第二p型ウェル領域よりもドーパント濃度が高く、
上記n型ショットキー領域は、1又は複数の上記MOSFETセルに近接する上記n型ドリフト層上にあり、
上記ソース金属層は、上記ソースオーム接点上にあり且つそれと接触し、
上記ショットキー金属層は、上記n型ショットキー領域上にあり且つそれと接触し、
上記ショットキー金属層は、上記n型ショットキー領域とのショットキー接点を形成している、
マルチセルMOSFET素子を提供する。
n型ソース領域形成工程と、
第一及び第二p型本体接触領域形成工程と、
ゲート酸化層蒸着工程と、
ゲート層蒸着工程と、
層間絶縁膜素材蒸着工程と、
ソースオーム接点形成工程と、
ソース金属層蒸着工程と、
金属蒸着形成工程と、を有し、
上記p型ウェル領域形成工程において、n型ドリフト層に第一及び第二p型ウェル領域を形成し、
上記n型ドリフト層は、n型基板上にあり、
上記第一及び第二p型ウェル領域は、互いに離れるように間隔を置いて設置され、その間にn型ショットキー領域を形成し、
第一及び第二ウェル領域の各々に隣接し且つ上記n型ショットキー領域とは反対側の上記ドリフト層のn型領域は、第一及び第二JFET領域を形成し、
上記n型ソース領域形成工程において、上記第一及び第二p型ウェル領域の各々にn型ソース領域を形成し、
上記n型ソース領域は、上記第一及び第二JFET領域から間隔を置いて配置され、上記n型ソース領域と上記JFET領域との間にp型チャネル領域を残し、
上記第一及び第二p型本体接触領域形成工程において、上記ショットキー領域と上記第一及び第二p型ウェル領域の各々との間に第一及び第二p型本体接触領域をそれぞれ形成し、
上記ゲート酸化層蒸着工程において、上記第一及び第二JFET領域上に且つチャネル領域に隣接してゲート酸化層を蒸着し、
上記ゲート層蒸着工程において、上記ゲート酸化層上にゲート層を蒸着し、
上記層間絶縁膜素材蒸着工程において、上記ゲート層上に層間絶縁膜素材を蒸着し、
上記ソースオーム接点形成工程において、上記ソース領域上にソースオーム接点を形成し、
上記ソース金属層蒸着工程において、上記ソースオーム接点上に且つ上記n型ショットキー領域上にソース金属層を蒸着し、
上記ソース金属層は、上記n型ショットキー領域との上記ショットキー接点を形成し、
上記金属蒸着形成工程において、上記ソース金属層上に最終金属を蒸着する、
マルチセルMOSFET素子を製造する方法も提供する。
第一及び第二p型ウェル領域形成工程と、
n型ソース領域形成工程と、
第一及び第二p型本体接触領域形成工程と、
誘電体材料蒸着工程と、
ゲート酸化層蒸着工程と、
ゲート層蒸着工程と、
層間絶縁膜素材蒸着工程と、
ソースオーム接点形成工程と、
ソース金属層蒸着工程と、
金属蒸着工程と、を有し、
上記n型ドリフト層エッチング工程において、n型ドリフト層をエッチングして底部及び側壁を有する第一及び第二開口部を形成し、
上記n型ドリフト層は、n型基板上にあり、
上記第一及び第二開口部は、互いに離れるように間隔を置いて設置され、その間にn型ショットキー領域を形成し、
上記第一及び第二p型ウェル領域形成工程において、上記第一及び第二開口部に隣接したn型ドリフト層に第一及び第二p型ウェル領域をそれぞれ形成し、
上記第一及び第二p型ウェル領域は、上記n型ショットキー領域とは反対側に形成され、
上記第一及び第二ウェル領域に隣接した上記ドリフト層のn型領域は、第一及び第二JFET領域を形成し、
上記n型ソース領域形成工程において、上記第一及び第二p型ウェル領域の各々にn型ソース領域を形成し、
上記n型ソース領域は、上記第一及び第二JFET領域から間隔を置いて配置され、上記n型ソース領域と上記JFET領域との間にp型チャネル領域を残し、
上記第一及び第二p型本体接触領域形成工程において、第一及び第二開口部の上記底部及び側壁に隣接して第一及び第二p型本体接触領域を形成し、
上記誘電体材料蒸着工程において、上記第一及び第二開口部に誘電体材料を蒸着し、
上記ゲート酸化層蒸着工程において、上記第一及び第二JFET領域上に且つチャネル領域に隣接してゲート酸化層を蒸着し、
上記ゲート層蒸着工程において、上記ゲート酸化層上にゲート層を蒸着し、
上記層間絶縁膜素材蒸着工程において、上記ゲート層上に層間絶縁膜素材を蒸着し、
上記ソースオーム接点形成工程において、上記ソース領域上にソースオーム接点を形成し、
上記ソース金属層蒸着工程において、上記ソースオーム接点上に且つ上記n型ショットキー領域にソース金属層を蒸着し、
上記ソース金属層は、上記n型ショットキー領域とのショットキー接点を形成し、
上記金属蒸着工程において、上記ソース金属層上に最終的な金属を蒸着する、
マルチセルMOSFET素子を製造する方法も提供する。
Claims (14)
- n型基板上のn型ドリフト層と、
複数のMOSFETセルと、
n型ショットキー領域と、
ソース金属層と、
ショットキー金属層と、を備えるマルチセルMOSFET素子であって、
MOSFETセルの各々は、
第一及び第二p型ウェル領域と、
n型JFET領域と、
第一及び第二n型ソース領域と、
ソースオーム接点と、
ゲート誘電層と、
ゲート層と、
層間絶縁膜層と、
第一及び第二p型本体接触領域と、を備え、
前記第一及び第二p型ウェル領域は、前記n型ドリフト層上において間隔を置いて設置される関係にあり、
前記n型JFET領域は、前記第一及び第二p型ウェル領域間の前記n型ドリフト層上にあり、
前記第一及び第二p型ウェル領域の各々は、前記JFET領域に隣接したチャネル領域を備え、
前記第一及び第二n型ソース領域は、前記第一及び第二p型ウェル領域の各々上にあり且つ前記JFET領域とは反対側の前記チャネル領域に隣接しており、
前記第一及び第二n型ソース領域は、前記n型ドリフト層よりもドーパント濃度が高く、
前記ソースオーム接点は、前記第一及び第二n型ソース領域の各々上にあり、
前記ゲート誘電層は、前記JFET領域及びチャネル領域上にあり、
前記ゲート層は、前記ゲート誘電層上にあり、
前記層間絶縁膜層は、前記ゲート層上にあり、
前記第一及び第二p型本体接触領域は、前記n型ドリフト層上にあり且つ前記チャネル領域とは反対側の第一及び第二n型ソース領域に隣接しており、
前記第一及び第二p型本体接触領域は、前記第一及び第二p型ウェル領域よりもドーパント濃度が高く、
前記n型ショットキー領域は、1又は複数の前記MOSFETセルに近接する前記n型ドリフト層上にあり、
前記ソース金属層は、前記ソースオーム接点上にあり且つそれと接触し、
前記ショットキー金属層は、前記n型ショットキー領域上にあり且つそれと接触し、
前記ショットキー金属層は、前記n型ショットキー領域とのショットキー接点を形成し、
前記マルチセルMOSFET素子は、前記ソースオーム接点及び前記1又は複数のn型ショットキー領域上に誘電体材料を更に備え、
前記マルチセルMOSFET素子は、
前記ソースオーム接点上に前記誘電体材料を通じて形成された1又は複数のソースバイアと、
前記1又は複数のn型ショットキー領域上に前記誘電体材料を通じて形成された前記1又は複数のショットキービアと、を備え、
前記ソース金属層は、前記誘電体材料上にあり且つ前記ソース及びショットキービア中にあり、
前記ソース金属層は、ショットキービアの底部でショットキー領域と接触し、前記ソースビアの底底部で前記ソースオーム接点と接触している、
マルチセルMOSFET素子。 - 1又は複数の前記n型ショットキー領域は、前記n型ドリフト層とはドーパント濃度が異なる、
請求項1に記載のマルチセルMOSFET素子。 - 前記n型JFET領域は、前記n型ドリフト層とはドーパント濃度が異なる、
請求項1に記載のマルチセルMOSFET素子。 - 前記第一及び第二p型ウェル領域は、x方向に互いが間隔を置いて配置され、x方向に対して垂直なy方向に延在する細長い領域であり、
前記n型JFET領域は、前記第一及び第二p型ウェル領域間でx方向に延在する細長い領域である、
請求項1に記載のマルチセルMOSFET素子。 - 前記ショットキー領域は、隣接するMOSFETセルのp型本体接触領域間にy方向に延在する単一の連続した細長い領域を備える、
請求項4に記載のマルチセルMOSFET素子。 - 第一の前記複数のMOSFETセルのp型本体接触領域と第二の前記複数のMOSFETセルの隣接するp型本体接触領域は、それぞれ、y方向に互いに間隔を置いて配置され且つ前記第一MOSFETセルのチャネル領域から前記第二MOSFETセルの隣接するチャネル領域までx-方向に延在する複数で別々のp型本体接触領域を備え、
前記第一MOSFETセルのn型ソース領域と前記第二MOSFETセルの隣接するn型ソース領域は、それぞれ、前記別々のp型本体接触領域間でy方向に間隔を置いて配置された複数で別々のn型ソース領域を備え、
前記第一及び第二MOSFETセル間の前記ショットキー領域は、y-方向の前記別々のp型本体接触領域間及びx方向の第一及び第二MOSFETセルの前記別々のn型ソース領域間の複数で別々のショットキー領域を備える、
請求項4に記載のマルチセルMOSFET素子。 - 前記第一及び第二p型本体接触領域に誘電体材料を更に備える、
請求項1に記載のマルチセルMOSFET素子。 - 前記素子は、SiC素子である、
請求項1に記載のマルチセルMOSFET素子。 - p型ウェル領域形成工程と、
n型ソース領域形成工程と、
第一及び第二p型本体接触領域形成工程と、
ゲート酸化層蒸着工程と、
ゲート層蒸着工程と、
層間絶縁膜素材蒸着工程と、
ソースオーム接点形成工程と、
ソース金属層蒸着工程と、
金属蒸着形成工程と、を有し、
前記p型ウェル領域形成工程において、n型ドリフト層に第一及び第二p型ウェル領域を形成し、前記n型ドリフト層は、n型基板上にあり、
前記第一及び第二p型ウェル領域は、互いに離れるように間隔を置かれ、その間にn型ショットキー領域を形成し、
第一及び第二ウェル領域の隣接し且つ前記n型ショットキー領域とは反対側の前記ドリフト層のn型領域は、第一及び第二JFET領域を形成し、
前記n型ソース領域形成工程において、前記第一及び第二p型ウェル領域の各々にn型ソース領域を形成し、
前記n型ソース領域は、前記第一及び第二JFET領域から間隔を置いて配置され、前記n型ソース領域と前記JFET領域との間にp型チャネル領域を残し、
前記第一及び第二p型本体接触領域形成工程において、前記ショットキー領域と前記第一及び第二p型ウェル領域との間に第一及び第二p型本体接触領域をそれぞれ形成し、
前記ゲート酸化層蒸着工程において、前記第一及び第二JFET領域上に且つチャネル領域に隣接してゲート酸化層を蒸着し、
前記ゲート層蒸着工程において、前記ゲート酸化層上にゲート層を蒸着し、
前記層間絶縁膜素材蒸着工程において、前記ゲート層上に層間絶縁膜素材を蒸着し、
前記ソースオーム接点形成工程において、前記ソース領域上にソースオーム接点を形成し、
前記ソース金属層蒸着工程において、前記ソースオーム接点上に且つ前記n型ショットキー領域上にソース金属層を蒸着し、
前記ソース金属層は、前記n型ショットキー領域との前記ショットキー接点を形成し、
前記金属蒸着形成工程において、前記ソース金属層上に最終金属を蒸着し、
前記ソース金属層蒸着工程の前に、
誘電体材料形成工程と、
1又は複数のソースビア形成工程と、
1又は複数のショットキービア形成工程と、を更に有し、
前記誘電体材料形成工程において、前記ソース接点とショットキー領域上に誘電体材料が形成され、
前記1又は複数のソースビア形成工程において、前記ソース接点上に前記誘電体材料を通じて1又は複数のソースビアを形成し、
前記1又は複数のショットキービア形成工程において、前記ショットキー領域上に前記誘電体材料を通じて1又は複数のショットキービアを形成し、
前記ソース金属層蒸着工程は、前記ソース及びショットキービアにソース金属を蒸着するソース金属蒸着工程を有し、
前記ソース金属層は、前記ソース及びショットキービアの底部で前記ソース金属及びショットキー領域とそれぞれ接触する、
マルチセルMOSFET素子を製造する方法。 - 前記ショットキー金属層及びソース金属層上あり、そしてそれと接触した最終金属層を更に備える、請求項1に記載のマルチセルMOSFET素子。
- 前記ドリフト層上にn型電流拡散層を更に備え、
前記第一及び第二p型ウェル領域、前記n型JFET領域、前記第一及び第二p型本体接触領域並びに前記n型ショットキー領域は、電流拡散層上にある、
請求項1に記載のマルチセルMOSFET素子。 - 第一MOSFETセルと、隣接する第二MOSFETセルと、前記第一及び第二MOSFETセル間に複数のp型本体接点領域及びn型ショットキー領域を交互に備える周辺領域と、を備える、
請求項1に記載のマルチセルMOSFET素子。 - 前記周辺領域は、
前記周辺領域に隣接した前記第一MOSFETセルの周辺に沿って延在する第一p型本体接触領域と、
前記周辺領域に隣接し且つ前記第一p型本体接触領域とは反対側の前記第二MOSFETセルの周辺に沿って延在する第二p型本体接触領域と、を備え、
前記交互に備わるp型本体接触領域は、前記第一及び第二p型本体接触領域間に延在する、
請求項12に記載のマルチセルMOSFET素子。 - 前記第一MOSFETセルは、前記周辺領域に隣接して前記第一MOSFETセルの周辺に沿って延在する複数のp型本体接触領域及びn型ソース領域を交互に備え、
前記第二MOSFETセルは、前記周辺領域に隣接して前記第二MOSFETセルの周辺に沿って延在する複数のp型本体接触領域及びn型ソース領域を交互に備える、
請求項12に記載のマルチセルMOSFET素子。
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KR102404463B1 (ko) * | 2022-04-26 | 2022-06-07 | (주) 트리노테크놀로지 | 폴디드 채널 영역이 형성된 실리콘 카바이드 전력 반도체 장치 및 그 제조 방법 |
Families Citing this family (61)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US9583482B2 (en) * | 2015-02-11 | 2017-02-28 | Monolith Semiconductor Inc. | High voltage semiconductor devices and methods of making the devices |
JP6666224B2 (ja) * | 2016-09-21 | 2020-03-13 | 株式会社東芝 | 半導体装置 |
US9929284B1 (en) * | 2016-11-11 | 2018-03-27 | Cree, Inc. | Power schottky diodes having local current spreading layers and methods of forming such devices |
DE102017100109A1 (de) * | 2017-01-04 | 2018-07-05 | Infineon Technologies Ag | Halbleitervorrichtung und verfahren zum herstellen derselben |
CN108336090B (zh) * | 2017-01-20 | 2020-09-08 | 清华大学 | 肖特基二极管及肖特基二极管阵列 |
CN108336150B (zh) * | 2017-01-20 | 2020-09-29 | 清华大学 | 肖特基二极管、肖特基二极管阵列及肖特基二极管的制备方法 |
CN117174755A (zh) * | 2017-01-25 | 2023-12-05 | 罗姆股份有限公司 | 半导体装置 |
TWI652818B (zh) * | 2017-02-18 | 2019-03-01 | 瀚薪科技股份有限公司 | 一種碳化矽半導體元件 |
TWI630700B (zh) * | 2017-05-10 | 2018-07-21 | 新唐科技股份有限公司 | 半導體元件 |
IT201700073767A1 (it) * | 2017-07-05 | 2019-01-05 | St Microelectronics Srl | Dispositivo mosfet di carburo di silicio avente un diodo integrato e relativo processo di fabbricazione |
SE541290C2 (en) | 2017-09-15 | 2019-06-11 | Ascatron Ab | A method for manufacturing a grid |
SE541291C2 (en) | 2017-09-15 | 2019-06-11 | Ascatron Ab | Feeder design with high current capability |
SE541402C2 (en) | 2017-09-15 | 2019-09-17 | Ascatron Ab | Integration of a schottky diode with a mosfet |
SE541466C2 (en) | 2017-09-15 | 2019-10-08 | Ascatron Ab | A concept for silicon carbide power devices |
CN107946352B (zh) * | 2017-09-20 | 2023-10-24 | 重庆中科渝芯电子有限公司 | 一种欧姆接触和肖特基接触超级势垒整流器及其制作方法 |
DE102018125019A1 (de) | 2017-10-31 | 2019-05-02 | Taiwan Semiconductor Manufacturing Co., Ltd. | CMOS-Bildsensor mit Shallow-Trench-Rand-Dotierung |
US10672810B2 (en) | 2017-10-31 | 2020-06-02 | Taiwan Semiconductor Manufacturing Co., Ltd. | CMOS image sensor with shallow trench edge doping |
US10818788B2 (en) * | 2017-12-15 | 2020-10-27 | Alpha And Omega Semiconductor (Cayman) Ltd. | Schottky diode integrated into superjunction power MOSFETs |
CN108198857A (zh) * | 2017-12-28 | 2018-06-22 | 北京世纪金光半导体有限公司 | 一种集成凸块状肖特基二极管的碳化硅mosfet器件元胞结构 |
DE102018200676A1 (de) * | 2018-01-17 | 2019-07-18 | Robert Bosch Gmbh | Leistungselektronisches Bauelement |
DE102018103973B4 (de) | 2018-02-22 | 2020-12-03 | Infineon Technologies Ag | Siliziumcarbid-halbleiterbauelement |
DE102019111308A1 (de) | 2018-05-07 | 2019-11-07 | Infineon Technologies Ag | Siliziumcarbid halbleiterbauelement |
CN108807504B (zh) * | 2018-08-28 | 2022-01-25 | 电子科技大学 | 碳化硅mosfet器件及其制造方法 |
CN109148591A (zh) * | 2018-08-29 | 2019-01-04 | 电子科技大学 | 一种集成肖特基二极管的碳化硅槽栅mos器件 |
DE102018124497B4 (de) * | 2018-10-04 | 2022-06-30 | Infineon Technologies Ag | Halbleitervorrichtung und Verfahren zum Bilden einer Halbleitervorrichtung |
JP7061953B2 (ja) * | 2018-11-07 | 2022-05-02 | 三菱電機株式会社 | 炭化珪素半導体装置および電力変換装置 |
CN113039650B (zh) * | 2018-11-30 | 2024-04-30 | 三菱电机株式会社 | 半导体装置 |
CN109742135B (zh) * | 2018-12-03 | 2022-05-20 | 北京大学深圳研究生院 | 一种碳化硅mosfet器件及其制备方法 |
CN111354794B (zh) * | 2018-12-24 | 2021-11-05 | 东南大学 | 功率半导体器件及其制造方法 |
US11031472B2 (en) * | 2018-12-28 | 2021-06-08 | General Electric Company | Systems and methods for integrated diode field-effect transistor semiconductor devices |
CN109920838B (zh) * | 2019-03-18 | 2020-12-18 | 电子科技大学 | 一种沟槽型碳化硅mosfet器件及其制备方法 |
CN110459540B (zh) * | 2019-07-30 | 2021-10-26 | 创能动力科技有限公司 | 集成mosfet和二极管的半导体装置及其制造方法 |
CN110473872A (zh) * | 2019-10-14 | 2019-11-19 | 派恩杰半导体(杭州)有限公司 | 一种带有多数载流子二极管的碳化硅mos器件 |
US10777689B1 (en) * | 2019-10-18 | 2020-09-15 | Hong Kong Applied Science and Technology Research Institute Company, Limited | Silicon-carbide shielded-MOSFET embedded with a trench Schottky diode and heterojunction gate |
CN112786679B (zh) * | 2019-11-08 | 2023-04-14 | 株洲中车时代电气股份有限公司 | 碳化硅mosfet器件的元胞结构及碳化硅mosfet器件 |
CN113054016B (zh) * | 2019-12-26 | 2023-04-07 | 株洲中车时代半导体有限公司 | 一种碳化硅mosfet器件的元胞结构及功率半导体器件 |
CN113053992B (zh) * | 2019-12-26 | 2023-04-07 | 株洲中车时代半导体有限公司 | 一种碳化硅mosfet器件的元胞结构及功率半导体器件 |
CN111048408B (zh) * | 2020-01-03 | 2022-05-31 | 苏州锴威特半导体股份有限公司 | 一种集成肖特基二极管的短沟道碳化硅mosfet器件及其制造方法 |
CN111211172A (zh) * | 2020-01-03 | 2020-05-29 | 苏州锴威特半导体股份有限公司 | 一种短沟道碳化硅mosfet器件及其制造方法 |
JP7294156B2 (ja) * | 2020-01-16 | 2023-06-20 | 三菱電機株式会社 | 半導体装置の製造方法 |
CN111446293A (zh) * | 2020-03-25 | 2020-07-24 | 浙江大学 | 一种增强体二极管的碳化硅功率mosfet器件 |
US11004940B1 (en) | 2020-07-31 | 2021-05-11 | Genesic Semiconductor Inc. | Manufacture of power devices having increased cross over current |
US11476370B2 (en) * | 2020-08-06 | 2022-10-18 | Alpha Power Solutions Limited | Semiconductor device with embedded Schottky diode and manufacturing method thereof |
TW202226592A (zh) | 2020-08-31 | 2022-07-01 | 美商GeneSiC 半導體股份有限公司 | 經改良之功率器件之設計及製法 |
CN112838131B (zh) * | 2021-01-08 | 2022-02-11 | 江苏东海半导体科技有限公司 | 基于碳化硅平面型mos结构的肖特基二极管 |
CN113035955B (zh) * | 2021-02-25 | 2023-03-28 | 湖南三安半导体有限责任公司 | 集成肖特基二极管的碳化硅mosfet器件及其制备方法 |
JP2023045865A (ja) * | 2021-09-22 | 2023-04-03 | 東芝デバイス&ストレージ株式会社 | 半導体装置 |
CN114284345B (zh) * | 2021-12-23 | 2023-09-15 | 电子科技大学 | 一种优化导通电阻的集成肖特基vdmos器件 |
CN114400255A (zh) * | 2022-01-17 | 2022-04-26 | 海科(嘉兴)电力科技有限公司 | 集成结势垒肖特基二极管的平面型功率mosfet器件 |
US11823905B2 (en) * | 2022-02-28 | 2023-11-21 | SCDevice LLC | Self aligned MOSFET devices and associated fabrication methods |
CN114744049B (zh) * | 2022-06-13 | 2022-09-27 | 瑞能半导体科技股份有限公司 | 碳化硅mosfet半导体器件及制作方法 |
EP4297100A1 (en) * | 2022-06-22 | 2023-12-27 | Hitachi Energy Ltd | Method for producing a semiconductor device and semiconductor device |
JPWO2024028996A1 (ja) * | 2022-08-03 | 2024-02-08 | ||
WO2024028995A1 (ja) * | 2022-08-03 | 2024-02-08 | 三菱電機株式会社 | 半導体装置および電力変換装置 |
CN115579399A (zh) * | 2022-12-12 | 2023-01-06 | 深圳平创半导体有限公司 | 一种碳化硅mosfet元胞版图结构 |
CN115602730A (zh) * | 2022-12-15 | 2023-01-13 | 深圳市森国科科技股份有限公司(Cn) | 一种半导体场效应晶体管及其制备方法、电路板、设备 |
WO2024183913A1 (en) * | 2023-03-09 | 2024-09-12 | Huawei Digital Power Technologies Co., Ltd. | Monolithically integrated trench-gate planar-gate and schottky barrier diode semiconductor device |
WO2024183912A1 (en) * | 2023-03-09 | 2024-09-12 | Huawei Digital Power Technologies Co., Ltd. | Monolithically integrated schottky barrier diode semiconductor device |
CN117238914A (zh) * | 2023-11-13 | 2023-12-15 | 深圳天狼芯半导体有限公司 | 一种集成SBD的SiC器件及制备方法 |
CN117334747A (zh) * | 2023-12-01 | 2024-01-02 | 深圳天狼芯半导体有限公司 | 一种源极沟槽集成SBD的SiC平面MOS及制备方法 |
CN117497601B (zh) * | 2023-12-28 | 2024-05-07 | 深圳天狼芯半导体有限公司 | 平面型碳化硅晶体管的结构、制造方法及电子设备 |
Family Cites Families (61)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0693512B2 (ja) * | 1986-06-17 | 1994-11-16 | 日産自動車株式会社 | 縦形mosfet |
US4811065A (en) * | 1987-06-11 | 1989-03-07 | Siliconix Incorporated | Power DMOS transistor with high speed body diode |
US4967243A (en) * | 1988-07-19 | 1990-10-30 | General Electric Company | Power transistor structure with high speed integral antiparallel Schottky diode |
US5111253A (en) | 1989-05-09 | 1992-05-05 | General Electric Company | Multicellular FET having a Schottky diode merged therewith |
US5410170A (en) * | 1993-04-14 | 1995-04-25 | Siliconix Incorporated | DMOS power transistors with reduced number of contacts using integrated body-source connections |
JPH08204179A (ja) | 1995-01-26 | 1996-08-09 | Fuji Electric Co Ltd | 炭化ケイ素トレンチmosfet |
JP3618517B2 (ja) * | 1997-06-18 | 2005-02-09 | 三菱電機株式会社 | 半導体装置およびその製造方法 |
US6351018B1 (en) | 1999-02-26 | 2002-02-26 | Fairchild Semiconductor Corporation | Monolithically integrated trench MOSFET and Schottky diode |
JP2001345444A (ja) * | 1999-10-25 | 2001-12-14 | Seiko Instruments Inc | 半導体装置とその製造方法 |
US7126169B2 (en) * | 2000-10-23 | 2006-10-24 | Matsushita Electric Industrial Co., Ltd. | Semiconductor element |
JP4197400B2 (ja) * | 2001-03-29 | 2008-12-17 | 三菱電機株式会社 | 炭化珪素半導体からなる半導体装置 |
JP2002373989A (ja) * | 2001-06-13 | 2002-12-26 | Toshiba Corp | 半導体装置 |
US6621107B2 (en) * | 2001-08-23 | 2003-09-16 | General Semiconductor, Inc. | Trench DMOS transistor with embedded trench schottky rectifier |
US6573558B2 (en) * | 2001-09-07 | 2003-06-03 | Power Integrations, Inc. | High-voltage vertical transistor with a multi-layered extended drain structure |
US7221010B2 (en) * | 2002-12-20 | 2007-05-22 | Cree, Inc. | Vertical JFET limited silicon carbide power metal-oxide semiconductor field effect transistors |
JP3888330B2 (ja) * | 2003-04-23 | 2007-02-28 | 株式会社デンソー | 炭化珪素半導体装置の製造方法 |
US6979863B2 (en) * | 2003-04-24 | 2005-12-27 | Cree, Inc. | Silicon carbide MOSFETs with integrated antiparallel junction barrier Schottky free wheeling diodes and methods of fabricating the same |
US7157785B2 (en) * | 2003-08-29 | 2007-01-02 | Fuji Electric Device Technology Co., Ltd. | Semiconductor device, the method of manufacturing the same, and two-way switching device using the semiconductor devices |
CN1311560C (zh) * | 2003-10-16 | 2007-04-18 | 电子科技大学 | 横向低侧高压器件及高侧高压器件 |
US7417266B1 (en) | 2004-06-10 | 2008-08-26 | Qspeed Semiconductor Inc. | MOSFET having a JFET embedded as a body diode |
US7118970B2 (en) * | 2004-06-22 | 2006-10-10 | Cree, Inc. | Methods of fabricating silicon carbide devices with hybrid well regions |
US7199442B2 (en) * | 2004-07-15 | 2007-04-03 | Fairchild Semiconductor Corporation | Schottky diode structure to reduce capacitance and switching losses and method of making same |
US7453119B2 (en) | 2005-02-11 | 2008-11-18 | Alphs & Omega Semiconductor, Ltd. | Shielded gate trench (SGT) MOSFET cells implemented with a schottky source contact |
US8110869B2 (en) * | 2005-02-11 | 2012-02-07 | Alpha & Omega Semiconductor, Ltd | Planar SRFET using no additional masks and layout method |
US8461648B2 (en) * | 2005-07-27 | 2013-06-11 | Infineon Technologies Austria Ag | Semiconductor component with a drift region and a drift control region |
US7928470B2 (en) * | 2005-11-25 | 2011-04-19 | Denso Corporation | Semiconductor device having super junction MOS transistor and method for manufacturing the same |
JP4900662B2 (ja) | 2006-03-02 | 2012-03-21 | 独立行政法人産業技術総合研究所 | ショットキーダイオードを内蔵した炭化ケイ素mos電界効果トランジスタおよびその製造方法 |
JP2007299970A (ja) * | 2006-05-01 | 2007-11-15 | Toshiba Corp | 半導体装置及びその製造方法 |
US20080014693A1 (en) * | 2006-07-12 | 2008-01-17 | General Electric Company | Silicon carbide vertical mosfet design for fast switching applications |
US7651918B2 (en) * | 2006-08-25 | 2010-01-26 | Freescale Semiconductor, Inc. | Strained semiconductor power device and method |
US7829402B2 (en) * | 2009-02-10 | 2010-11-09 | General Electric Company | MOSFET devices and methods of making |
WO2011033550A1 (ja) | 2009-09-15 | 2011-03-24 | 株式会社 東芝 | 半導体装置 |
US8563986B2 (en) * | 2009-11-03 | 2013-10-22 | Cree, Inc. | Power semiconductor devices having selectively doped JFET regions and related methods of forming such devices |
US8476698B2 (en) * | 2010-02-19 | 2013-07-02 | Alpha And Omega Semiconductor Incorporated | Corner layout for superjunction device |
US8674439B2 (en) * | 2010-08-02 | 2014-03-18 | Microsemi Corporation | Low loss SiC MOSFET |
KR101106535B1 (ko) | 2011-04-15 | 2012-01-20 | 페어차일드코리아반도체 주식회사 | 전력용 반도체 소자 및 그 제조방법 |
US8502302B2 (en) * | 2011-05-02 | 2013-08-06 | Alpha And Omega Semiconductor Incorporated | Integrating Schottky diode into power MOSFET |
US8274113B1 (en) | 2011-05-12 | 2012-09-25 | Force Mos Technology Co., Ltd. | Trench MOSFET having shielded electrode integrated with trench Schottky rectifier |
US8377756B1 (en) * | 2011-07-26 | 2013-02-19 | General Electric Company | Silicon-carbide MOSFET cell structure and method for forming same |
US9984894B2 (en) * | 2011-08-03 | 2018-05-29 | Cree, Inc. | Forming SiC MOSFETs with high channel mobility by treating the oxide interface with cesium ions |
US8680587B2 (en) * | 2011-09-11 | 2014-03-25 | Cree, Inc. | Schottky diode |
US8610235B2 (en) | 2011-09-22 | 2013-12-17 | Alpha And Omega Semiconductor Incorporated | Trench MOSFET with integrated Schottky barrier diode |
WO2013177552A1 (en) * | 2012-05-24 | 2013-11-28 | Microsemi Corporation | Monolithically integrated sic mosfet and schottky barrier diode |
US8901639B2 (en) * | 2012-07-26 | 2014-12-02 | Cree, Inc. | Monolithic bidirectional silicon carbide switching devices |
DE112013007772B3 (de) * | 2012-09-06 | 2023-04-13 | Mitsubishi Electric Corporation | Halbleitervorrichtung |
JP6120525B2 (ja) * | 2012-10-30 | 2017-04-26 | 三菱電機株式会社 | 炭化珪素半導体装置 |
US9337163B2 (en) * | 2012-11-13 | 2016-05-10 | General Electric Company | Low profile surface mount package with isolated tab |
TWI521718B (zh) * | 2012-12-20 | 2016-02-11 | 財團法人工業技術研究院 | 接面位障蕭特基二極體嵌於金氧半場效電晶體單元陣列之整合元件 |
US10629723B2 (en) * | 2012-12-28 | 2020-04-21 | Texas Instruments Incorporated | Schottky power MOSFET |
US8785988B1 (en) * | 2013-01-11 | 2014-07-22 | Macronix International Co., Ltd. | N-channel metal-oxide field effect transistor with embedded high voltage junction gate field-effect transistor |
JP2014157896A (ja) * | 2013-02-15 | 2014-08-28 | Toyota Central R&D Labs Inc | 半導体装置とその製造方法 |
JP5992094B2 (ja) * | 2013-04-03 | 2016-09-14 | 三菱電機株式会社 | 半導体装置 |
US9082626B2 (en) * | 2013-07-26 | 2015-07-14 | Infineon Technologies Ag | Conductive pads and methods of formation thereof |
US20150084063A1 (en) * | 2013-09-20 | 2015-03-26 | Cree, Inc. | Semiconductor device with a current spreading layer |
US10868169B2 (en) * | 2013-09-20 | 2020-12-15 | Cree, Inc. | Monolithically integrated vertical power transistor and bypass diode |
US9318597B2 (en) * | 2013-09-20 | 2016-04-19 | Cree, Inc. | Layout configurations for integrating schottky contacts into a power transistor device |
US10600903B2 (en) | 2013-09-20 | 2020-03-24 | Cree, Inc. | Semiconductor device including a power transistor device and bypass diode |
US9419130B2 (en) * | 2013-11-27 | 2016-08-16 | Infineon Technologies Austria Ag | Semiconductor device and integrated circuit |
US9184248B2 (en) * | 2014-02-04 | 2015-11-10 | Maxpower Semiconductor Inc. | Vertical power MOSFET having planar channel and its method of fabrication |
JP2015185700A (ja) * | 2014-03-25 | 2015-10-22 | サンケン電気株式会社 | 半導体装置 |
US9583482B2 (en) * | 2015-02-11 | 2017-02-28 | Monolith Semiconductor Inc. | High voltage semiconductor devices and methods of making the devices |
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Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102404463B1 (ko) * | 2022-04-26 | 2022-06-07 | (주) 트리노테크놀로지 | 폴디드 채널 영역이 형성된 실리콘 카바이드 전력 반도체 장치 및 그 제조 방법 |
WO2023211010A1 (ko) * | 2022-04-26 | 2023-11-02 | (주)트리노테크놀로지 | 폴디드 채널 영역이 형성된 실리콘 카바이드 전력 반도체 장치 및 그 제조 방법 |
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US9583482B2 (en) | 2017-02-28 |
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