JPWO2019187222A1 - フォトダイオードおよび光感応デバイス - Google Patents
フォトダイオードおよび光感応デバイス Download PDFInfo
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- 239000000463 material Substances 0.000 claims abstract description 83
- 229910021338 magnesium silicide Inorganic materials 0.000 claims abstract description 32
- YTHCQFKNFVSQBC-UHFFFAOYSA-N magnesium silicide Chemical compound [Mg]=[Si]=[Mg] YTHCQFKNFVSQBC-UHFFFAOYSA-N 0.000 claims abstract description 32
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 21
- 239000000956 alloy Substances 0.000 claims abstract description 21
- 239000013078 crystal Substances 0.000 claims abstract description 17
- 239000011777 magnesium Substances 0.000 claims abstract description 16
- 229910021332 silicide Inorganic materials 0.000 claims abstract description 14
- FVBUAEGBCNSCDD-UHFFFAOYSA-N silicide(4-) Chemical compound [Si-4] FVBUAEGBCNSCDD-UHFFFAOYSA-N 0.000 claims abstract description 13
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 12
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 12
- 229910052710 silicon Inorganic materials 0.000 claims abstract description 7
- 239000010703 silicon Substances 0.000 claims abstract description 7
- 239000010936 titanium Substances 0.000 claims description 16
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 14
- KDLHZDBZIXYQEI-UHFFFAOYSA-N Palladium Chemical compound [Pd] KDLHZDBZIXYQEI-UHFFFAOYSA-N 0.000 claims description 13
- 229910052751 metal Inorganic materials 0.000 claims description 13
- 239000002184 metal Substances 0.000 claims description 13
- 239000010931 gold Substances 0.000 claims description 12
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 claims description 12
- 229910052763 palladium Inorganic materials 0.000 claims description 7
- 229910052697 platinum Inorganic materials 0.000 claims description 6
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 5
- BQCADISMDOOEFD-UHFFFAOYSA-N Silver Chemical compound [Ag] BQCADISMDOOEFD-UHFFFAOYSA-N 0.000 claims description 5
- 229910052737 gold Inorganic materials 0.000 claims description 5
- 229910052709 silver Inorganic materials 0.000 claims description 5
- 239000004332 silver Substances 0.000 claims description 5
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- 239000011651 chromium Substances 0.000 claims description 4
- 239000010955 niobium Substances 0.000 claims description 4
- 239000010948 rhodium Substances 0.000 claims description 4
- 239000011669 selenium Substances 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 3
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 3
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 3
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 claims description 3
- BUGBHKTXTAQXES-UHFFFAOYSA-N Selenium Chemical compound [Se] BUGBHKTXTAQXES-UHFFFAOYSA-N 0.000 claims description 3
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical group [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 3
- 229910052787 antimony Inorganic materials 0.000 claims description 3
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 claims description 3
- 229910052785 arsenic Inorganic materials 0.000 claims description 3
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 claims description 3
- 229910052790 beryllium Inorganic materials 0.000 claims description 3
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052797 bismuth Inorganic materials 0.000 claims description 3
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 claims description 3
- 229910052793 cadmium Inorganic materials 0.000 claims description 3
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 229910052802 copper Inorganic materials 0.000 claims description 3
- 239000010949 copper Substances 0.000 claims description 3
- 229910052733 gallium Inorganic materials 0.000 claims description 3
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052735 hafnium Inorganic materials 0.000 claims description 3
- VBJZVLUMGGDVMO-UHFFFAOYSA-N hafnium atom Chemical compound [Hf] VBJZVLUMGGDVMO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052738 indium Inorganic materials 0.000 claims description 3
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 3
- 229910052741 iridium Inorganic materials 0.000 claims description 3
- GKOZUEZYRPOHIO-UHFFFAOYSA-N iridium atom Chemical compound [Ir] GKOZUEZYRPOHIO-UHFFFAOYSA-N 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 239000011733 molybdenum Substances 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 229910052758 niobium Inorganic materials 0.000 claims description 3
- GUCVJGMIXFAOAE-UHFFFAOYSA-N niobium atom Chemical compound [Nb] GUCVJGMIXFAOAE-UHFFFAOYSA-N 0.000 claims description 3
- 229910052702 rhenium Inorganic materials 0.000 claims description 3
- WUAPFZMCVAUBPE-UHFFFAOYSA-N rhenium atom Chemical compound [Re] WUAPFZMCVAUBPE-UHFFFAOYSA-N 0.000 claims description 3
- 229910052703 rhodium Inorganic materials 0.000 claims description 3
- MHOVAHRLVXNVSD-UHFFFAOYSA-N rhodium atom Chemical compound [Rh] MHOVAHRLVXNVSD-UHFFFAOYSA-N 0.000 claims description 3
- 229910052711 selenium Inorganic materials 0.000 claims description 3
- 229910052715 tantalum Inorganic materials 0.000 claims description 3
- GUVRBAGPIYLISA-UHFFFAOYSA-N tantalum atom Chemical compound [Ta] GUVRBAGPIYLISA-UHFFFAOYSA-N 0.000 claims description 3
- 229910052714 tellurium Inorganic materials 0.000 claims description 3
- PORWMNRCUJJQNO-UHFFFAOYSA-N tellurium atom Chemical compound [Te] PORWMNRCUJJQNO-UHFFFAOYSA-N 0.000 claims description 3
- 239000010409 thin film Substances 0.000 claims description 3
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- 239000010937 tungsten Substances 0.000 claims description 3
- 229910052727 yttrium Inorganic materials 0.000 claims description 3
- VWQVUPCCIRVNHF-UHFFFAOYSA-N yttrium atom Chemical compound [Y] VWQVUPCCIRVNHF-UHFFFAOYSA-N 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 239000011701 zinc Substances 0.000 claims description 3
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 claims description 2
- 229910052742 iron Inorganic materials 0.000 claims description 2
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 claims description 2
- 229910052720 vanadium Inorganic materials 0.000 claims description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 claims description 2
- 229910052726 zirconium Inorganic materials 0.000 claims description 2
- 239000004065 semiconductor Substances 0.000 abstract description 26
- 239000000853 adhesive Substances 0.000 abstract description 10
- 230000001070 adhesive effect Effects 0.000 abstract description 10
- 206010034972 Photosensitivity reaction Diseases 0.000 abstract description 6
- 230000036211 photosensitivity Effects 0.000 abstract description 6
- 230000003287 optical effect Effects 0.000 abstract description 3
- 229910019752 Mg2Si Inorganic materials 0.000 abstract 1
- 229910019018 Mg 2 Si Inorganic materials 0.000 description 121
- 239000010410 layer Substances 0.000 description 23
- 239000007772 electrode material Substances 0.000 description 20
- 238000000034 method Methods 0.000 description 14
- 239000002178 crystalline material Substances 0.000 description 12
- 238000009792 diffusion process Methods 0.000 description 12
- 230000035945 sensitivity Effects 0.000 description 11
- 230000004888 barrier function Effects 0.000 description 10
- 230000003595 spectral effect Effects 0.000 description 9
- 150000001875 compounds Chemical class 0.000 description 7
- 238000005516 engineering process Methods 0.000 description 7
- 239000012535 impurity Substances 0.000 description 7
- 230000000052 comparative effect Effects 0.000 description 6
- 238000001228 spectrum Methods 0.000 description 6
- 239000000758 substrate Substances 0.000 description 6
- 238000012544 monitoring process Methods 0.000 description 5
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 4
- 239000002019 doping agent Substances 0.000 description 4
- 238000010438 heat treatment Methods 0.000 description 4
- 239000007769 metal material Substances 0.000 description 4
- 230000000704 physical effect Effects 0.000 description 4
- 238000001771 vacuum deposition Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- 238000004544 sputter deposition Methods 0.000 description 3
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 description 2
- 230000015572 biosynthetic process Effects 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000003384 imaging method Methods 0.000 description 2
- 239000011572 manganese Substances 0.000 description 2
- 238000005498 polishing Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000010998 test method Methods 0.000 description 2
- 229910000530 Gallium indium arsenide Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910000661 Mercury cadmium telluride Inorganic materials 0.000 description 1
- 230000009118 appropriate response Effects 0.000 description 1
- 229910052786 argon Inorganic materials 0.000 description 1
- 238000013473 artificial intelligence Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000003745 diagnosis Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- -1 for example Chemical compound 0.000 description 1
- 229910052736 halogen Inorganic materials 0.000 description 1
- 150000002367 halogens Chemical class 0.000 description 1
- 238000010191 image analysis Methods 0.000 description 1
- 238000011835 investigation Methods 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 230000000873 masking effect Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 238000002161 passivation Methods 0.000 description 1
- 238000000206 photolithography Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 239000011241 protective layer Substances 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- VSZWPYCFIRKVQL-UHFFFAOYSA-N selanylidenegallium;selenium Chemical compound [Se].[Se]=[Ga].[Se]=[Ga] VSZWPYCFIRKVQL-UHFFFAOYSA-N 0.000 description 1
- 239000002210 silicon-based material Substances 0.000 description 1
- 241000894007 species Species 0.000 description 1
- GPPXJZIENCGNKB-UHFFFAOYSA-N vanadium Chemical compound [V]#[V] GPPXJZIENCGNKB-UHFFFAOYSA-N 0.000 description 1
- 238000007740 vapor deposition Methods 0.000 description 1
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- H01L31/10—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof in which radiation controls flow of current through the device, e.g. photoresistors characterised by potential barriers, e.g. phototransistors
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Abstract
Description
1)マグネシウムシリサイド結晶のpn接合と、p型マグネシウムシリサイドに接する材料を含む電極と、n型マグネシウムシリサイドに接する材料を含む電極と、を含むフォトダイオードであって、前記p型マグネシウムシリサイドに接する材料は、仕事関数が4.81eV以上で、かつシリコンと反応してシリサイドを形成するかマグネシウムと合金を形成する材料であることを特徴とするフォトダイオード、
2)前記p型マグネシウムシリサイドに接する材料が、ニッケル、コバルト、白金、パラジウム、イリジウム、レニウム、ロジウム、ベリリウム、セレン、テルルからなる群から選択される少なくとも一以上の金属または合金であることを特徴とする前記1)に記載のフォトダイオード、
3)前記n型マグネシウムシリサイドに接する材料は、仕事関数が4.81eVよりも小さく、かつシリコンと反応してシリサイドを形成するかマグネシウムと合金を形成する材料であることを特徴とする前記1)または2)に記載のフォトダイオード、
4)前記n型マグネシウムシリサイドに接する材料が、アルミニウム、ガリウム、インジウム、ヒ素、アンチモン、ビスマス、銀、銅、亜鉛、カドミウム、チタン、バナジウム、クロム、マンガン、鉄、イットリウム、ジルコニウム、ニオブ、モリブデン、ハフニウム、タンタル、タングステンからなる群から選択される少なくとも一以上の金属または合金であることを特徴とする前記1)〜3)のいずれか一に記載のフォトダイオード、
5)前記p型マグネシウムシリサイドに接する材料を含む電極が、前記p型マグネシウムシリサイドに接する材料と、さらにこれに接する他の材料を含むことを特徴とする前記1)〜4)のいずれか一に記載のフォトダイオード、
6)前記他の材料が、前記p型マグネシウムシリサイドに接触する材料として選択された金属である場合を除き、金、パラジウム、白金からなる群から選択される少なくとも一以上の金属または合金であることを特徴とする前記5)に記載のフォトダイオード、
7)前記p型マグネシウムシリサイドに接する材料が、厚さ1〜1000nmの薄膜となっていることを特徴とする前記1)〜6)のいずれか一に記載のフォトダイオード、
8)前記p型マグネシウムシリサイドが、銀をドープしたマグネシウムシリサイドであることを特徴とする前記1)〜7)のいずれか一に記載のフォトダイオード、
9)少なくとも一方の電極が、内側に開口を有するリング状電極であることを特徴とする前記1)〜8)のいずれか一に記載のフォトダイオード、
10)前記1)〜9)のいずれか一に記載のフォトダイオードを含むことを特徴とする光感応デバイス。
Mg2Siの結晶性材料として、非特許文献1に開示された方法に準じた垂直ブリッジマン法によって育成されたn型Mg2Siの単結晶材料を準備し、これを(110)面で切り出して両面を鏡面研磨後洗浄し、厚さ1mmのMg2Si単結晶基板とした。基板のキャリア濃度は6×1015cm-3である。この基板の一方の表面上の一部に、拡散源となる直径800μmのAg層を真空蒸着法によって形成した後、アルゴン(Ar)雰囲気中にて450℃で10分間熱処理することで、n型Mg2Si基板の一方の表面から深さ方向へAgの熱拡散を行い、n型Mg2Si結晶の一部領域にp型Mg2Si層の形成を行った。
p型Mg2Si層の表面に直接接触する電極層の材料をTiとした以外は実施例1と同様の手順でフォトダイオードを作製した。つまり、この例では、Mg2Si結晶のpn接合において、p型Mg2Siに直接接する材料は、仕事関数が4.33eVのTiの層であり、このTi層とその直上に形成されたAu層とを含む構成がp型Mg2Si側の電極となる。反対側のn型Mg2Siの全面に接する電極は実施例1と同様にAlである。そして、この例についても、実施例1と同一の手段、条件で分光感度特性の評価を行った。なお、実施例1と同様にp型、n型各領域のキャリア濃度からこの時のp型Mg2Siの仕事関数は約5.09eV、n型Mg2Siの仕事関数は約4.62eVと見積もられる。
301 空乏層および拡散長
302 電子
303 正孔
Claims (10)
- マグネシウムシリサイド結晶のpn接合と、p型マグネシウムシリサイドに接する材料を含む電極と、n型マグネシウムシリサイドに接する材料を含む電極と、を含むフォトダイオードであって、
前記p型マグネシウムシリサイドに接する材料は、仕事関数が4.81eV以上で、かつシリコンと反応してシリサイドを形成するかマグネシウムと合金を形成する材料であることを特徴とするフォトダイオード。 - 前記p型マグネシウムシリサイドに接する材料が、ニッケル、コバルト、白金、パラジウム、イリジウム、レニウム、ロジウム、ベリリウム、セレン、テルルからなる群から選択される少なくとも一以上の金属または合金であることを特徴とする請求項1に記載のフォトダイオード。
- 前記n型マグネシウムシリサイドに接する材料は、仕事関数が4.81eVよりも小さく、かつシリコンと反応してシリサイドを形成するかマグネシウムと合金を形成する材料であることを特徴とする請求項1または2に記載のフォトダイオード。
- 前記n型マグネシウムシリサイドに接する材料が、アルミニウム、ガリウム、インジウム、ヒ素、アンチモン、ビスマス、銀、銅、亜鉛、カドミウム、チタン、バナジウム、クロム、マンガン、鉄、イットリウム、ジルコニウム、ニオブ、モリブデン、ハフニウム、タンタル、タングステンからなる群から選択される少なくとも一以上の金属または合金であることを特徴とする請求項1〜3のいずれか一項に記載のフォトダイオード。
- 前記p型マグネシウムシリサイドに接する材料を含む電極が、前記p型マグネシウムシリサイドに接する材料と、さらにこれに接する他の別の材料をさらに含むことを特徴とする請求項1〜4のいずれか一項に記載のフォトダイオード。
- 前記他の別の材料が、前記p型マグネシウムシリサイドに接触する材料として選択された金属である場合を除き、金、パラジウム、白金からなる群から選択される少なくとも一以上の金属または合金であることを特徴とする請求項5に記載のフォトダイオード。
- 前記p型マグネシウムシリサイドに接する材料が、厚さ1〜1000nmの薄膜となっていることを特徴とする請求項1〜6のいずれか一項に記載のフォトダイオード。
- 前記p型マグネシウムシリサイドが、銀をドープしたマグネシウムシリサイドであることを特徴とする請求項1〜7のいずれか一項に記載のフォトダイオード。
- 少なくとも一方の電極が、内側に開口を有するリング状電極であることを特徴とする請求項1〜8のいずれか一項に記載のフォトダイオード。
- 請求項1〜9のいずれか一項に記載のフォトダイオードを含むことを特徴とする光感応デバイス。
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