JP2010116621A - ZnO系半導体層とその製造方法、ZnO系半導体発光素子、及びZnO系半導体素子 - Google Patents
ZnO系半導体層とその製造方法、ZnO系半導体発光素子、及びZnO系半導体素子 Download PDFInfo
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- 239000004065 semiconductor Substances 0.000 title claims abstract description 65
- 238000000034 method Methods 0.000 title description 9
- 239000010410 layer Substances 0.000 claims description 189
- 239000000758 substrate Substances 0.000 claims description 35
- 230000004888 barrier function Effects 0.000 claims description 8
- 238000004519 manufacturing process Methods 0.000 claims description 8
- 238000001451 molecular beam epitaxy Methods 0.000 claims description 6
- 229910052760 oxygen Inorganic materials 0.000 claims description 4
- 239000002356 single layer Substances 0.000 claims description 4
- 229910052749 magnesium Inorganic materials 0.000 claims description 2
- 229910052725 zinc Inorganic materials 0.000 claims description 2
- 239000002344 surface layer Substances 0.000 claims 1
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 description 253
- 239000011787 zinc oxide Substances 0.000 description 126
- 238000002474 experimental method Methods 0.000 description 32
- 239000011701 zinc Substances 0.000 description 17
- 238000005259 measurement Methods 0.000 description 14
- 239000013078 crystal Substances 0.000 description 11
- 239000012535 impurity Substances 0.000 description 10
- 230000001678 irradiating effect Effects 0.000 description 7
- 238000001228 spectrum Methods 0.000 description 6
- 238000001194 electroluminescence spectrum Methods 0.000 description 5
- 230000004907 flux Effects 0.000 description 5
- 150000001875 compounds Chemical class 0.000 description 4
- 230000007812 deficiency Effects 0.000 description 4
- 230000006872 improvement Effects 0.000 description 4
- 230000004048 modification Effects 0.000 description 4
- 238000012986 modification Methods 0.000 description 4
- 238000000103 photoluminescence spectrum Methods 0.000 description 4
- 238000005275 alloying Methods 0.000 description 3
- 229910052782 aluminium Inorganic materials 0.000 description 3
- 238000000137 annealing Methods 0.000 description 3
- 230000007547 defect Effects 0.000 description 3
- 238000005401 electroluminescence Methods 0.000 description 3
- 238000005530 etching Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 229910052757 nitrogen Inorganic materials 0.000 description 3
- 238000005424 photoluminescence Methods 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 108091006149 Electron carriers Proteins 0.000 description 2
- 125000004429 atom Chemical group 0.000 description 2
- 239000000969 carrier Substances 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 229910001882 dioxygen Inorganic materials 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 229910052733 gallium Inorganic materials 0.000 description 2
- 229910021478 group 5 element Inorganic materials 0.000 description 2
- 229910052738 indium Inorganic materials 0.000 description 2
- 238000010030 laminating Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000001590 oxidative effect Effects 0.000 description 2
- 229910052698 phosphorus Inorganic materials 0.000 description 2
- 238000012545 processing Methods 0.000 description 2
- 238000002128 reflection high energy electron diffraction Methods 0.000 description 2
- 238000001004 secondary ion mass spectrometry Methods 0.000 description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 1
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 229910052785 arsenic Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 239000007772 electrode material Substances 0.000 description 1
- 238000000295 emission spectrum Methods 0.000 description 1
- 238000001704 evaporation Methods 0.000 description 1
- 229910021474 group 7 element Inorganic materials 0.000 description 1
- 125000005842 heteroatom Chemical group 0.000 description 1
- 230000031700 light absorption Effects 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- TWNQGVIAIRXVLR-UHFFFAOYSA-N oxo(oxoalumanyloxy)alumane Chemical compound O=[Al]O[Al]=O TWNQGVIAIRXVLR-UHFFFAOYSA-N 0.000 description 1
- 238000001020 plasma etching Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000006798 recombination Effects 0.000 description 1
- 238000005215 recombination Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 229910052711 selenium Inorganic materials 0.000 description 1
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 description 1
- 230000001629 suppression Effects 0.000 description 1
- 229910052714 tellurium Inorganic materials 0.000 description 1
- 230000007704 transition Effects 0.000 description 1
- 239000012808 vapor phase Substances 0.000 description 1
- 238000000927 vapour-phase epitaxy Methods 0.000 description 1
- 238000001039 wet etching Methods 0.000 description 1
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Abstract
【解決手段】
ZnO系半導体層に、1×1017cm−3〜2×1020cm−3の範囲の濃度でMgをドープする。
【選択図】図7
Description
バンドギャップをZnOよりも広げる程度の高い濃度のMgを含む。ZnO:Mg層は、バンドギャップがZnOと同等に保たれる程度の、1%未満の低いMg濃度である。
このように、発光層は、第2または第3の実験のように単層(ダブルへテロ構造)とすることも、井戸層と障壁層の積層を含む構造とすることもできる。発光層の成長温度は、結晶性を高めるために500℃以上とし、Znの再蒸発を防ぐために1000℃以下の範囲とすることが好ましい。
32 ZnOバッファ層
33 n型ZnO層
34 n型MgZnO層
35 発光層
36 p型ZnO層
41 n側電極
42 p側電極
43 ボンディング電極
Claims (9)
- Mgが1×1017cm−3〜2×1020cm−3の範囲の濃度でドープされたZnO系半導体層。
- 基板と、
前記基板の上方に形成され、第1の導電型の第1のZnO系半導体層と、
前記第1のZnO系半導体層の上に形成されたZnO系半導体発光層と、
前記ZnO系半導体発光層の上に形成され、前記第1の導電型と逆の第2の導電型の第2のZnO系半導体層と
を有し、
前記第1のZnO系半導体層、前記ZnO系半導体発光層、及び前記第2のZnO系半導体層の少なくとも1つが、Mgが1×1017cm−3〜2×1020cm−3の範囲の濃度でドープされたZnO系半導体層を含むZnO系半導体発光素子。 - 前記発光層が単層であり、該発光層にMgが1×1017cm−3〜2×1020cm−3の範囲の濃度でドープされている請求項2に記載のZnO系半導体発光素子。
- 前記発光層が、井戸層と障壁層の積層を含む構造を持ち、少なくとも該井戸層にMgが1×1017cm−3〜2×1020cm−3の範囲の濃度でドープされている請求項2に記載のZnO系半導体発光素子。
- さらに、前記第2のZnO系半導体層の上に形成された電極を有し、
該第2のZnO系半導体層の該電極と接する表層に、Mgが1×1017cm−3〜2×1020cm−3の範囲の濃度でドープされている請求項2〜4のいずれか1項に記載のZnO系半導体発光素子。 - 前記第2の導電型がp型である請求項5に記載のZnO系半導体発光素子。
- Mgが1×1017cm−3〜2×1020cm−3の範囲の濃度でドープされたZnO系半導体層を含むZnO系半導体素子。
- 基板を準備する工程と、
前記基板の上方に、Zn、O、及びMgを同時に供給して、Mgが1×1017cm−3〜2×1020cm−3の範囲の濃度でドープされたZnO系半導体層を形成する工程と
を有するZnO系半導体層の製造方法。 - 前記ZnO系半導体層を形成する工程は、分子線エピタキシを用いる請求項8に記載のZnO系半導体層の製造方法。
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JP2008292233A JP5346200B2 (ja) | 2008-11-14 | 2008-11-14 | ZnO系半導体層とその製造方法、ZnO系半導体発光素子、及びZnO系半導体素子 |
US12/611,234 US8294146B2 (en) | 2008-11-14 | 2009-11-03 | ZnO-containing semiconductor layer and device using the same |
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JP2008292233A JP5346200B2 (ja) | 2008-11-14 | 2008-11-14 | ZnO系半導体層とその製造方法、ZnO系半導体発光素子、及びZnO系半導体素子 |
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JP5346200B2 JP5346200B2 (ja) | 2013-11-20 |
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Cited By (2)
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---|---|---|---|---|
JP2013120829A (ja) * | 2011-12-07 | 2013-06-17 | Sharp Corp | 窒化物半導体紫外発光素子 |
JP2017120192A (ja) * | 2015-12-28 | 2017-07-06 | 国立大学法人島根大学 | シンチレータ及び電子検出器 |
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US20170373194A1 (en) * | 2016-06-27 | 2017-12-28 | Semiconductor Energy Laboratory Co., Ltd. | Transistor |
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JP2004296459A (ja) * | 2003-03-25 | 2004-10-21 | Sharp Corp | 酸化物半導体発光素子およびその製造方法 |
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WO2007023832A1 (ja) * | 2005-08-24 | 2007-03-01 | National Institute For Materials Science | 酸化亜鉛発光体と発光素子 |
JP2007095786A (ja) * | 2005-09-27 | 2007-04-12 | Toyoda Gosei Co Ltd | Iii族窒化物系化合物半導体発光素子 |
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JP2013120829A (ja) * | 2011-12-07 | 2013-06-17 | Sharp Corp | 窒化物半導体紫外発光素子 |
JP2017120192A (ja) * | 2015-12-28 | 2017-07-06 | 国立大学法人島根大学 | シンチレータ及び電子検出器 |
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US8294146B2 (en) | 2012-10-23 |
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