JP5122738B2 - ZnO結晶またはZnO系半導体化合物結晶の製造方法、及びZnO系発光素子の製造方法 - Google Patents
ZnO結晶またはZnO系半導体化合物結晶の製造方法、及びZnO系発光素子の製造方法 Download PDFInfo
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- 239000013078 crystal Substances 0.000 title claims description 69
- 150000001875 compounds Chemical class 0.000 title claims description 33
- 239000004065 semiconductor Substances 0.000 title claims description 33
- 238000004519 manufacturing process Methods 0.000 title claims description 32
- 238000000034 method Methods 0.000 title claims description 13
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 claims description 500
- 239000011787 zinc oxide Substances 0.000 claims description 249
- 239000011701 zinc Substances 0.000 claims description 94
- 239000000758 substrate Substances 0.000 claims description 75
- 230000004907 flux Effects 0.000 claims description 41
- 230000004913 activation Effects 0.000 claims description 33
- 229910003363 ZnMgO Inorganic materials 0.000 claims description 28
- 239000012535 impurity Substances 0.000 claims description 19
- 229910052760 oxygen Inorganic materials 0.000 claims description 10
- 239000001301 oxygen Substances 0.000 claims description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 8
- 229910052782 aluminium Inorganic materials 0.000 claims description 7
- 229910052733 gallium Inorganic materials 0.000 claims description 7
- GYHNNYVSQQEPJS-UHFFFAOYSA-N Gallium Chemical compound [Ga] GYHNNYVSQQEPJS-UHFFFAOYSA-N 0.000 claims description 6
- 229910052738 indium Inorganic materials 0.000 claims description 6
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 5
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 claims description 5
- APFVFJFRJDLVQX-UHFFFAOYSA-N indium atom Chemical compound [In] APFVFJFRJDLVQX-UHFFFAOYSA-N 0.000 claims description 4
- 239000000463 material Substances 0.000 claims description 2
- 239000010408 film Substances 0.000 description 91
- 238000002128 reflection high energy electron diffraction Methods 0.000 description 16
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 15
- 125000004429 atom Chemical group 0.000 description 11
- 238000005259 measurement Methods 0.000 description 8
- 229910052757 nitrogen Inorganic materials 0.000 description 7
- 230000007423 decrease Effects 0.000 description 6
- 238000001451 molecular beam epitaxy Methods 0.000 description 6
- 230000015572 biosynthetic process Effects 0.000 description 5
- 238000001704 evaporation Methods 0.000 description 5
- 239000011777 magnesium Substances 0.000 description 5
- 239000010409 thin film Substances 0.000 description 5
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 4
- 229910052749 magnesium Inorganic materials 0.000 description 4
- 239000012528 membrane Substances 0.000 description 4
- 238000005424 photoluminescence Methods 0.000 description 4
- 229910052725 zinc Inorganic materials 0.000 description 4
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 3
- 230000004888 barrier function Effects 0.000 description 3
- 238000000151 deposition Methods 0.000 description 3
- 230000008021 deposition Effects 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 2
- 229910005191 Ga 2 O 3 Inorganic materials 0.000 description 2
- 230000005355 Hall effect Effects 0.000 description 2
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 2
- 238000005275 alloying Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 2
- 229910052737 gold Inorganic materials 0.000 description 2
- 239000010931 gold Substances 0.000 description 2
- QJGQUHMNIGDVPM-UHFFFAOYSA-N nitrogen(.) Chemical compound [N] QJGQUHMNIGDVPM-UHFFFAOYSA-N 0.000 description 2
- -1 oxygen radical Chemical class 0.000 description 2
- 238000001004 secondary ion mass spectrometry Methods 0.000 description 2
- 238000001039 wet etching Methods 0.000 description 2
- MGWGWNFMUOTEHG-UHFFFAOYSA-N 4-(3,5-dimethylphenyl)-1,3-thiazol-2-amine Chemical compound CC1=CC(C)=CC(C=2N=C(N)SC=2)=C1 MGWGWNFMUOTEHG-UHFFFAOYSA-N 0.000 description 1
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910021529 ammonia Inorganic materials 0.000 description 1
- 238000000137 annealing Methods 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 229910052790 beryllium Inorganic materials 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 229910001882 dioxygen Inorganic materials 0.000 description 1
- 239000007789 gas Substances 0.000 description 1
- 238000000097 high energy electron diffraction Methods 0.000 description 1
- 238000001027 hydrothermal synthesis Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 229910052759 nickel Inorganic materials 0.000 description 1
- JCXJVPUVTGWSNB-UHFFFAOYSA-N nitrogen dioxide Inorganic materials O=[N]=O JCXJVPUVTGWSNB-UHFFFAOYSA-N 0.000 description 1
- 125000004430 oxygen atom Chemical group O* 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 150000003254 radicals Chemical class 0.000 description 1
- 229910052594 sapphire Inorganic materials 0.000 description 1
- 239000010980 sapphire Substances 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 229910052717 sulfur Inorganic materials 0.000 description 1
- 230000003746 surface roughness Effects 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- 239000010936 titanium Substances 0.000 description 1
- 229910052719 titanium Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 238000001947 vapour-phase growth Methods 0.000 description 1
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- Crystals, And After-Treatments Of Crystals (AREA)
Description
ここでRZnOは、ZnOの再蒸発速度を示す。成長温度が800℃以下においては、RZnOは無視することができる。
Hiroyuki Kato, Michihiro Sano, Kazuhiro Miyamoto, Takafumi Yao; "High−quality ZnO epilayers grown on Zn−face ZnO substrates by plasma−assisted molecular beam epitaxy"; Journal of Crystal Growth 265(2004); p.375−381
式(1)において、ZnOの再蒸発速度RZnOが、ZnOの成長速度Gよりも大きい場合、ZnO膜は形成されない。
740℃≦Tgo≦980℃ ・・(3)
ここで、ZnO膜を十分な速度で成長させるために、更に、RZnO≦50nm/hという条件を採用する。図3によれば、RZnO≦50nm/hであることは、実質成長温度(基板表面温度)Tgo≦900℃であることに相当する。実質成長温度(基板表面温度)Tgo≦900℃であることは、図2に従えば、成長温度(基板ヒータ設定温度)Tg≦1100℃であることに相当する。
740℃≦Tgo≦900℃ ・・(5)
上記式(4)または式(5)の温度範囲においては、成長速度を低下させることなく、ZnO膜を二次元成長させることができる。
2 RHEEDガン
3 RHEEDスクリーン
4 亜鉛ソースガン
5 酸素ソースガン
6 ガリウムソースガン
7 ステージ
8 基板
9 窒素ソースガン
10 マグネシウムソースガン
11 ZnO基板
12 n型ZnOバッファ層
13 n型ZnO層
14 n型ZnMgO層
15 ZnO/ZnMgO量子井戸層
15b バリア層
15w ウエル層
16 p型ZnMgO層
17 p型ZnO層
18 p型透明電極
19 n型電極
20 ボンディング電極
Claims (6)
- 少なくとも亜鉛(Zn)と活性酸素(O)とを別々に供給して、Zn極性面を備えるZnO基板上で反応させ、前記基板のZn極性面上に、酸化亜鉛(ZnO)結晶、またはZnO系半導体化合物結晶を成長させるZnO結晶、またはZnO系半導体化合物結晶の製造方法であって、前記ZnO結晶、またはZnO系半導体化合物結晶を、不純物として、ガリウム(Ga)、アルミニウム(Al)、またはインジウム(In)を、5.0×1017cm−3以上、7.0×1019cm−3以下の濃度となるように添加し、かつ、前記不純物の活性化率が0.5以上となるように、Znリッチ条件で、また、前記基板の表面が740℃以上900℃以下の温度となる条件で成長させるZnO結晶、またはZnO系半導体化合物結晶の製造方法。
- 前記ZnO結晶、またはZnO系半導体化合物結晶を、フラックス比が0.35以下のZnリッチ条件で成長させる請求項1に記載のZnO結晶、またはZnO系半導体化合物結晶の製造方法。
- 前記ZnO結晶、またはZnO系半導体化合物結晶を、MBEで成長させる請求項1または2に記載のZnO結晶、またはZnO系半導体化合物結晶の製造方法。
- (a)Zn極性面を備えるZnO基板の前記Zn極性面上に、n型ZnOバッファ層を形成する工程と、
(b)前記n型ZnOバッファ層の表面上に、n型ZnO層を形成する工程と、
(c)前記n型ZnO層表面上に、n型ZnMgO層を形成する工程と、
(d)前記n型ZnMgO層表面上に、ZnO層とZnMgO層とが交互に積層されるZnO/ZnMgO量子井戸層を形成する工程と、
(e)前記ZnO/ZnMgO量子井戸層表面上に、p型ZnMgO層を形成する工程と、
(f)前記p型ZnMgO層表面上に、p型ZnO層を形成する工程と、
(g)前記n型ZnO層及び前記p型ZnO層上に電極を形成する工程と
を有するZnO系発光素子の製造方法であって、前記工程(b)において、少なくとも亜鉛(Zn)と活性酸素(O)とを別々に供給して、前記n型ZnOバッファ層上で反応させ、不純物として、ガリウム(Ga)、アルミニウム(Al)、またはインジウム(In)を、5.0×1017cm−3以上、7.0×1019cm−3以下の濃度となるように添加し、かつ、前記不純物の活性化率が0.5以上となるように、Znリッチ条件で、また、前記基板の表面を740℃以上900℃以下の温度として層形成を行うZnO系発光素子の製造方法。 - 前記工程(b)において、フラックス比が0.35以下のZnリッチ条件で層形成を行う請求項4に記載のZnO系発光素子の製造方法。
- 前記工程(b)において、MBEで層形成を行う請求項4または5に記載のZnO系発光素子の製造方法。
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JP2005317973A JP5122738B2 (ja) | 2005-11-01 | 2005-11-01 | ZnO結晶またはZnO系半導体化合物結晶の製造方法、及びZnO系発光素子の製造方法 |
DE102006051455.6A DE102006051455B4 (de) | 2005-11-01 | 2006-10-31 | Herstellungsverfahren für eine ZnO-basierte Leuchtvorrichtung |
US11/589,998 US20070134842A1 (en) | 2005-11-01 | 2006-10-31 | Manufacture method for ZnO based semiconductor crystal and light emitting device using same |
US12/749,401 US7968363B2 (en) | 2005-11-01 | 2010-03-29 | Manufacture method for ZnO based semiconductor crystal and light emitting device using same |
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JP4455890B2 (ja) * | 2004-01-06 | 2010-04-21 | スタンレー電気株式会社 | 半導体装置の製造方法 |
JP4994235B2 (ja) * | 2005-08-09 | 2012-08-08 | スタンレー電気株式会社 | ZnO結晶とその成長方法、及び発光素子の製造方法 |
JP2009029688A (ja) * | 2007-06-28 | 2009-02-12 | Rohm Co Ltd | ZnO系基板及びZnO系基板の処理方法 |
JP2009043920A (ja) * | 2007-08-08 | 2009-02-26 | Rohm Co Ltd | p型MgZnO系薄膜及び半導体発光素子 |
JP5096844B2 (ja) * | 2007-08-30 | 2012-12-12 | スタンレー電気株式会社 | ZnO系化合物半導体層の製造方法 |
JP2009065050A (ja) * | 2007-09-07 | 2009-03-26 | Rohm Co Ltd | ZnO系半導体素子 |
JP5019326B2 (ja) * | 2008-02-23 | 2012-09-05 | シチズンホールディングス株式会社 | MgaZn1−aO単結晶薄膜の作製方法 |
TWI373861B (en) * | 2008-12-11 | 2012-10-01 | Nat Univ Tsing Hua | Fabrication method of light emitting element and its light emitting element |
TW201030809A (en) * | 2009-02-10 | 2010-08-16 | Nat Univ Tsing Hua | Fabrication method of a photonic crystal structure |
JP2011054866A (ja) * | 2009-09-04 | 2011-03-17 | Stanley Electric Co Ltd | ZnO系半導体発光素子の製造方法 |
CN102312191B (zh) * | 2010-06-30 | 2015-08-19 | 中国科学院上海硅酸盐研究所 | 利用直流磁控溅射制备高阻透明ZnO薄膜的方法 |
JP2013028519A (ja) * | 2011-06-24 | 2013-02-07 | Fujikura Ltd | 窒素ドープ酸化亜鉛系薄膜の製造方法 |
KR101201641B1 (ko) | 2011-11-02 | 2012-11-14 | 주식회사 퀀텀디바이스 | 투명 박막, 이를 포함하는 발광 소자와 이들의 제조 방법 |
US9825154B2 (en) | 2011-11-28 | 2017-11-21 | Michigan Technological University | Room temperature tunneling switches and methods of making and using the same |
JP6100590B2 (ja) * | 2013-04-16 | 2017-03-22 | スタンレー電気株式会社 | p型ZnO系半導体層の製造方法、ZnO系半導体素子の製造方法、及び、n型ZnO系半導体積層構造 |
JP6100591B2 (ja) * | 2013-04-16 | 2017-03-22 | スタンレー電気株式会社 | p型ZnO系半導体層の製造方法、ZnO系半導体素子の製造方法、及び、n型ZnO系半導体積層構造 |
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JP2002076026A (ja) * | 2000-08-28 | 2002-03-15 | National Institute Of Advanced Industrial & Technology | ZnO系酸化物半導体層の成長方法およびそれを用いた半導体発光素子の製法 |
JP3749498B2 (ja) * | 2002-03-26 | 2006-03-01 | スタンレー電気株式会社 | 結晶成長用基板およびZnO系化合物半導体デバイス |
JP2004193206A (ja) * | 2002-12-09 | 2004-07-08 | Sharp Corp | 酸化物半導体発光素子 |
JP2004342732A (ja) * | 2003-05-14 | 2004-12-02 | Sharp Corp | 酸化物半導体発光素子 |
JP4272467B2 (ja) * | 2003-06-05 | 2009-06-03 | シャープ株式会社 | 酸化物半導体発光素子の製造方法 |
JP2005005421A (ja) * | 2003-06-11 | 2005-01-06 | Sharp Corp | 酸化物半導体発光素子 |
JP2005026493A (ja) * | 2003-07-03 | 2005-01-27 | Sharp Corp | 酸化物半導体発光素子 |
JP4455890B2 (ja) * | 2004-01-06 | 2010-04-21 | スタンレー電気株式会社 | 半導体装置の製造方法 |
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JP2007128936A (ja) | 2007-05-24 |
DE102006051455A1 (de) | 2007-05-24 |
US20100181550A1 (en) | 2010-07-22 |
US20070134842A1 (en) | 2007-06-14 |
US7968363B2 (en) | 2011-06-28 |
DE102006051455B4 (de) | 2020-12-24 |
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