JP2006108164A - 電極形成方法 - Google Patents
電極形成方法 Download PDFInfo
- Publication number
- JP2006108164A JP2006108164A JP2004288974A JP2004288974A JP2006108164A JP 2006108164 A JP2006108164 A JP 2006108164A JP 2004288974 A JP2004288974 A JP 2004288974A JP 2004288974 A JP2004288974 A JP 2004288974A JP 2006108164 A JP2006108164 A JP 2006108164A
- Authority
- JP
- Japan
- Prior art keywords
- electrode
- layer
- ito
- tin oxide
- indium tin
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
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- 238000000034 method Methods 0.000 title claims abstract description 16
- 239000004065 semiconductor Substances 0.000 claims abstract description 36
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims abstract description 19
- 229910052760 oxygen Inorganic materials 0.000 claims abstract description 19
- 239000001301 oxygen Substances 0.000 claims abstract description 19
- 239000012298 atmosphere Substances 0.000 claims abstract description 7
- 230000015572 biosynthetic process Effects 0.000 claims abstract description 6
- 238000007733 ion plating Methods 0.000 claims abstract description 4
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 23
- 238000010304 firing Methods 0.000 claims description 22
- AMGQUBHHOARCQH-UHFFFAOYSA-N indium;oxotin Chemical compound [In].[Sn]=O AMGQUBHHOARCQH-UHFFFAOYSA-N 0.000 claims description 14
- -1 nitride compound Chemical class 0.000 claims description 14
- 239000011651 chromium Substances 0.000 claims description 9
- 229910052782 aluminium Inorganic materials 0.000 claims description 8
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 8
- 229910052759 nickel Inorganic materials 0.000 claims description 8
- 239000010936 titanium Substances 0.000 claims description 8
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 4
- 238000005566 electron beam evaporation Methods 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 229910052594 sapphire Inorganic materials 0.000 abstract description 8
- 239000010980 sapphire Substances 0.000 abstract description 8
- 239000000758 substrate Substances 0.000 abstract description 8
- 238000004519 manufacturing process Methods 0.000 abstract description 3
- 238000007740 vapor deposition Methods 0.000 abstract description 2
- 238000010894 electron beam technology Methods 0.000 abstract 1
- 239000010931 gold Substances 0.000 description 16
- 239000010408 film Substances 0.000 description 13
- 238000002834 transmittance Methods 0.000 description 13
- 230000005540 biological transmission Effects 0.000 description 7
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 5
- 229910052737 gold Inorganic materials 0.000 description 5
- 229920002120 photoresistant polymer Polymers 0.000 description 5
- 239000000203 mixture Substances 0.000 description 4
- 239000010409 thin film Substances 0.000 description 4
- XOLBLPGZBRYERU-UHFFFAOYSA-N tin dioxide Chemical compound O=[Sn]=O XOLBLPGZBRYERU-UHFFFAOYSA-N 0.000 description 4
- 229910001887 tin oxide Inorganic materials 0.000 description 4
- 230000004888 barrier function Effects 0.000 description 3
- 230000000052 comparative effect Effects 0.000 description 3
- 239000013078 crystal Substances 0.000 description 3
- 230000004907 flux Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 239000012299 nitrogen atmosphere Substances 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 229910052710 silicon Inorganic materials 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 229910004298 SiO 2 Inorganic materials 0.000 description 2
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000002248 hydride vapour-phase epitaxy Methods 0.000 description 2
- 229910003437 indium oxide Inorganic materials 0.000 description 2
- PJXISJQVUVHSOJ-UHFFFAOYSA-N indium(iii) oxide Chemical compound [O-2].[O-2].[O-2].[In+3].[In+3] PJXISJQVUVHSOJ-UHFFFAOYSA-N 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 150000004767 nitrides Chemical class 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- LEONUFNNVUYDNQ-UHFFFAOYSA-N vanadium atom Chemical compound [V] LEONUFNNVUYDNQ-UHFFFAOYSA-N 0.000 description 2
- 238000000927 vapour-phase epitaxy Methods 0.000 description 2
- PIGFYZPCRLYGLF-UHFFFAOYSA-N Aluminum nitride Chemical compound [Al]#N PIGFYZPCRLYGLF-UHFFFAOYSA-N 0.000 description 1
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 229910052787 antimony Inorganic materials 0.000 description 1
- WATWJIUSRGPENY-UHFFFAOYSA-N antimony atom Chemical compound [Sb] WATWJIUSRGPENY-UHFFFAOYSA-N 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- RQNWIZPPADIBDY-UHFFFAOYSA-N arsenic atom Chemical compound [As] RQNWIZPPADIBDY-UHFFFAOYSA-N 0.000 description 1
- 229910052788 barium Inorganic materials 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- 229910052797 bismuth Inorganic materials 0.000 description 1
- JCXGWMGPZLAOME-UHFFFAOYSA-N bismuth atom Chemical compound [Bi] JCXGWMGPZLAOME-UHFFFAOYSA-N 0.000 description 1
- 229910052796 boron Inorganic materials 0.000 description 1
- 229910052791 calcium Inorganic materials 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 229910017052 cobalt Inorganic materials 0.000 description 1
- 239000010941 cobalt Substances 0.000 description 1
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 238000000313 electron-beam-induced deposition Methods 0.000 description 1
- 238000005530 etching Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 229910052732 germanium Inorganic materials 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 229910052738 indium Inorganic materials 0.000 description 1
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 description 1
- 239000011261 inert gas Substances 0.000 description 1
- 238000004943 liquid phase epitaxy Methods 0.000 description 1
- 229910052749 magnesium Inorganic materials 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 229910052596 spinel Inorganic materials 0.000 description 1
- 239000011029 spinel Substances 0.000 description 1
- 229910052712 strontium Inorganic materials 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- 229910052716 thallium Inorganic materials 0.000 description 1
- BKVIYDNLLOSFOA-UHFFFAOYSA-N thallium Chemical compound [Tl] BKVIYDNLLOSFOA-UHFFFAOYSA-N 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
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Abstract
【解決手段】半導体発光素子100は、サファイア基板上にバッファ層102、ノンドープGaN層103、高キャリヤ濃度n+層104、n型層105、発光層106、p型層107、p型コンタクト層108を順に積層して形成され、少なくとも酸素が存在する雰囲気下で電子線蒸着法又はイオンプレーティング法により形成され、後に焼成されて形成されたITOから成る透光性電極110を有する。
【選択図】図1
Description
上記の実施例において、透光性p電極(ITO)110に替えて、最下層から順に9ÅのCo、29ÅのAu、9ÅのCo、30ÅのAuの4層を積層することにより薄膜透明電極を形成し、厚膜p電極120に替えて最下層から順に、膜厚40nmのAu、膜厚30nmのCr、膜厚650nmのAu、膜厚10nmのAlから形成した比較に係る半導体発光素子を用意し、上記半導体発光素子100と物性を比較した。この際、Agステムに実装し、また透明ペーストで覆った。
101:サファイヤ基板
102:バッファ層
103:ノンドープGaN層
104:高キャリア濃度n+層
105:n型層
106:発光層
107:p型層
108:p型コンタクト層
110:透光性p電極(ITO)
120:厚膜p電極
130:保護膜
140:n電極
Claims (4)
- III族窒化物系化合物半導体を積層して形成した半導体素子の電極の形成方法において、
前記電極は、酸化インジウムスズ(ITO)から成り、
当該酸化インジウムスズ(ITO)を、少なくとも酸素の存在する雰囲気下で電子線蒸着法又はイオンプレーティング法により形成することを特徴とする電極形成方法。 - 前記酸化インジウムスズ(ITO)膜形成の後、300℃以上の温度で焼成することを特徴とする請求項1に記載の電極形成方法。
- 前記酸化インジウムスズ(ITO)膜形成を、0.01Pa以上の酸素雰囲気下で行うことを特徴とする請求項1に記載の電極形成方法。
- 前記酸化インジウムスズ(ITO)から成る電極の上に、ワイヤボンディングのためのパッド電極を形成するものであり、
当該パッド電極の最下層として、ニッケル(Ni)、チタン(Ti)、クロム(Cr)及びアルミニウム(Al)のうちの少なくとも一種類を含む膜を形成することを特徴とする請求項1乃至3のいずれか1項に記載の電極形成方法。
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TW094130082A TWI287305B (en) | 2004-09-30 | 2005-09-02 | Method for forming an electrode |
KR1020050090409A KR100754099B1 (ko) | 2004-09-30 | 2005-09-28 | 전극 형성 방법 |
CNB2005101080521A CN100472723C (zh) | 2004-09-30 | 2005-09-29 | 电极形成方法 |
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