JP5113478B2 - 半導体発光素子、照明装置および半導体発光素子の製造方法 - Google Patents
半導体発光素子、照明装置および半導体発光素子の製造方法 Download PDFInfo
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Description
図1は、本発明の第1実施形態による発光ダイオード素子(半導体発光素子)の構造を説明するための断面図である。図1を参照して、本発明の第1実施形態による発光ダイオード素子の構造について説明する。
図9は、本発明の第2実施形態による発光ダイオード素子(半導体発光素子)の構造を説明するための断面図である。この第2実施形態では、上記第1実施形態と異なり、第1接合層22a、第2接合層22bおよび第3接合層2cを半導体素子層3上に形成するとともに、半導体素子層3上に形成した第1接合層22a、第2接合層22bおよび第3接合層2cによって、半導体素子層3と支持基板1とを接合した例を説明する。なお、図1と同様の構成に対しては、同じ符号を付して、説明を省略する。
図13〜図15は、本発明の第3実施形態による照明装置の構造を説明するための図である。この第3実施形態では、照明装置の発光部分に上記第1実施形態による半導体発光素子を用いる例を説明する。
次に、上記実施例1〜3、比較例1および2による発光ダイオード素子について、以下に示すように評価を行った。
次に、実施例4〜6、比較例3および比較例4で作製した発光ダイオード素子について、特性評価1と同様の評価を行った。結果を以下の表3に示す。
1a オーミック層
2 接合層
2a 第1接合層(第1共晶合金層)
2b 第2接合層(第2共晶合金層)
2b1 第4接合層
2b2 第5接合層
2c 第3接合層(第3共晶合金層)
3 半導体素子層
3a p型コンタクト層
3b p型クラッド層
3c p型キャップ層
3d 活性層(発光層)
3e n型クラッド層
3f n型コンタクト層
4 絶縁層
4a 開口部
5 p側電極
6 バリア層
7 n側電極
8 成長基板
9 バッファ層
10 剥離層
11 マスク層
12 凹部
Claims (10)
- 支持基板と、
前記支持基板上に形成された第1共晶合金層と、
前記第1共晶合金層上に形成された第2共晶合金層と、
前記第2共晶合金層上に形成された第3共晶合金層と、
前記第3共晶合金層上に形成された発光層を含む半導体素子層とを備え、
前記第2共晶合金層の融点は、前記第1共晶合金層および前記第3共晶合金層の融点よりも低い、半導体発光素子。 - 前記半導体素子層の側面には、絶縁層を介して前記第3共晶合金層が形成されている、請求項1に記載の半導体発光素子。
- 前記第2共晶合金層の熱膨張係数は、前記第1共晶合金層および前記第3共晶合金層の熱膨張係数よりも大きい、請求項1または2に記載の半導体発光素子。
- 前記第1共晶合金層、前記第2共晶合金層および前記第3共晶合金層は、それぞれ、Au−Sn合金、Au−Ge合金およびAu−Si合金の少なくともいずれかを含む、請求項1〜3のいずれか1項に記載の半導体発光素子。
- 支持基板と、
前記支持基板上に形成された第1共晶合金層と、
前記第1共晶合金層上に形成された第2共晶合金層と、
前記第2共晶合金層上に形成された第3共晶合金層と、
前記第3共晶合金層上に形成された発光層を含む半導体素子層とを含み、
前記第2共晶合金層の融点は、前記第1共晶合金層および前記第3共晶合金層の融点よりも低い、半導体発光素子を備えた、照明装置。 - 発光層を含む半導体素子層を形成する工程と、
支持基板と前記半導体素子層との間に、前記支持基板側から第1共晶合金層、第2共晶合金層および第3共晶合金層をこの順に配置する工程と、
加熱することにより、前記半導体素子層と前記支持基板とを、前記第1共晶合金層、前記第2共晶合金層および前記第3共晶合金層を介して接合する工程とを備え、
前記第2共晶合金層の融点は、前記第1共晶合金層および前記第3共晶合金層の融点よりも低く、
前記半導体素子層と前記支持基板とを接合する工程における加熱温度は、前記第2共晶合金層の融点以上で、かつ、前記第1共晶合金層および前記第3共晶合金層の融点未満である、半導体発光素子の製造方法。 - 前記第1共晶合金層、前記第2共晶合金層および前記第3共晶合金層を配置する工程は、
前記半導体素子層上に、前記第3共晶合金層、前記第2共晶合金層および前記第1共晶合金層をこの順に形成する工程と、
前記第1共晶合金層上に前記支持基板を配置する工程とを含む、請求項6に記載の半導体発光素子の製造方法。 - 前記第1共晶合金層、前記第2共晶合金層および前記第3共晶合金層を配置する工程は、
前記半導体素子層上に、前記第3共晶合金層、前記第2共晶合金層および前記第1共晶合金層の一部をこの順に形成する工程と、
前記支持基板上に前記第1共晶合金層の一部を形成する工程と、
前記半導体素子層上に形成された前記第1共晶合金層の一部上に、前記支持基板上に形成された前記第1共晶合金層の一部を配置する工程とを含む、請求項6に記載の半導体発光素子の製造方法。 - 前記第1共晶合金層、前記第2共晶合金層および前記第3共晶合金層を配置する工程は、前記半導体素子層の側面に絶縁層を介して前記第3共晶合金層を形成する工程を含む、請求項6〜8のいずれか1項に記載の半導体発光素子の製造方法。
- 前記半導体素子層を形成する工程は、成長基板上に前記半導体素子層を形成する工程を含み、
前記成長基板を前記半導体素子層から除去する工程をさらに備える、請求項6〜9のいずれか1項に記載の半導体発光素子の製造方法。
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JP2007266058A JP5113478B2 (ja) | 2006-10-13 | 2007-10-12 | 半導体発光素子、照明装置および半導体発光素子の製造方法 |
KR1020087009524A KR101329908B1 (ko) | 2006-10-13 | 2007-10-12 | 반도체 발광 소자, 조명 장치 및 반도체 발광 소자의 제조방법 |
US12/090,181 US7880177B2 (en) | 2006-10-13 | 2007-10-12 | Semiconductor light-emitting device, illuminator and method of manufacturing semiconductor light-emitting device |
EP07829704.1A EP2063468B1 (en) | 2006-10-13 | 2007-10-12 | Semiconductor light emitting device and process for producing semiconductor light emitting device |
PCT/JP2007/069968 WO2008044769A1 (fr) | 2006-10-13 | 2007-10-12 | Dispositif électroluminescent à semi-conducteur, système d'éclairage et procédé de fabrication de dispositif électroluminescent à semi-conducteur |
CN2007800017496A CN101361203B (zh) | 2006-10-13 | 2007-10-12 | 半导体发光元件、照明装置和半导体发光元件的制造方法 |
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CN101361203B (zh) | 2012-05-02 |
KR101329908B1 (ko) | 2013-11-14 |
WO2008044769A1 (fr) | 2008-04-17 |
EP2063468A1 (en) | 2009-05-27 |
US20090173952A1 (en) | 2009-07-09 |
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JP2008118125A (ja) | 2008-05-22 |
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