WO2004114420A1 - 発光装置 - Google Patents
発光装置 Download PDFInfo
- Publication number
- WO2004114420A1 WO2004114420A1 PCT/JP2004/007873 JP2004007873W WO2004114420A1 WO 2004114420 A1 WO2004114420 A1 WO 2004114420A1 JP 2004007873 W JP2004007873 W JP 2004007873W WO 2004114420 A1 WO2004114420 A1 WO 2004114420A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- light emitting
- emitting device
- substrate
- uneven
- semiconductor layer
- Prior art date
Links
- 239000000758 substrate Substances 0.000 claims abstract description 46
- 239000004065 semiconductor Substances 0.000 claims abstract description 32
- 239000000463 material Substances 0.000 abstract 1
- 239000013078 crystal Substances 0.000 description 16
- 230000000052 comparative effect Effects 0.000 description 10
- 150000004767 nitrides Chemical class 0.000 description 6
- 238000001228 spectrum Methods 0.000 description 4
- JMASRVWKEDWRBT-UHFFFAOYSA-N Gallium nitride Chemical compound [Ga]#N JMASRVWKEDWRBT-UHFFFAOYSA-N 0.000 description 3
- 229910052594 sapphire Inorganic materials 0.000 description 3
- 239000010980 sapphire Substances 0.000 description 3
- 238000002441 X-ray diffraction Methods 0.000 description 2
- 239000003086 colorant Substances 0.000 description 2
- 238000000295 emission spectrum Methods 0.000 description 2
- 238000000407 epitaxy Methods 0.000 description 2
- 238000002488 metal-organic chemical vapour deposition Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000001451 molecular beam epitaxy Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 229940096118 ella Drugs 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- OOLLAFOLCSJHRE-ZHAKMVSLSA-N ulipristal acetate Chemical compound C1=CC(N(C)C)=CC=C1[C@@H]1C2=C3CCC(=O)C=C3CC[C@H]2[C@H](CC[C@]2(OC(C)=O)C(C)=O)[C@]2(C)C1 OOLLAFOLCSJHRE-ZHAKMVSLSA-N 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/02—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies
- H01L33/20—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies with a particular shape, e.g. curved or truncated substrate
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/02—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies
- H01L33/20—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies with a particular shape, e.g. curved or truncated substrate
- H01L33/24—Semiconductor devices having potential barriers specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof characterised by the semiconductor bodies with a particular shape, e.g. curved or truncated substrate of the light emitting region, e.g. non-planar junction
Definitions
- the present invention relates to a light emitting device having a large light emission amount.
- a group II nitride semiconductor By using a group II nitride semiconductor, light emitting devices of three primary colors of visible light, “blue”, “green”, and “red” can be manufactured. For example, it has been proposed to form an amorphous buffer layer on a sapphire substrate at low temperature and grow a group III nitride semiconductor crystal on it (for example, Shibata, "LEDs using group III nitrides”). Fabrication and Its Application ”'See Japan Society for Crystal Growth, Japan Society for Crystal Growth, September 20, 2002, Vol. 29, No. 3, p. 283-287. However, since a sapphire substrate is used as the substrate, only low-quality crystals having a high defect density can be obtained even when an III nitride semiconductor crystal is epitaxially grown. Further, since the sapphire substrate is insulative, there is a problem that the light emitting device becomes large.
- an object of the present invention is to provide a light emitting device in which the amount of light emission is increased without changing the size of the light emitting device.
- a light emitting device is characterized in that a semiconductor layer is formed on an uneven surface of an uneven substrate.
- the uneven substrate is A1, .G a v I ⁇ ⁇ , ⁇ (0 ⁇ x, 0 ⁇ y, x + y ⁇ l), each plane forming the uneven surface of the uneven substrate, L is an integer from 1 to 4.
- (1-1L) and (1-10L) at least one surface index selected from the following; Can be set at 35 ° to 80 °.
- FIG. 1 is a schematic sectional view of one light emitting device according to the present invention.
- FIG. 2 is a schematic sectional view of a conventional light emitting device.
- FIG. 3 is a schematic perspective view of one uneven substrate used in the present invention.
- FIG. 4 is a schematic perspective view of another uneven substrate used in the present invention.
- FIG. 5 is a schematic perspective view of a conventional substrate. BEST MODE FOR CARRYING OUT THE INVENTION
- semiconductor layer 30 is formed on uneven surface 1 a of uneven substrate 1.
- the surface area of the semiconductor layer 30 involved in light emission can be increased, and the light emission amount of the light emitting device increases.
- semiconductor layer 30 is formed on planar surface 2 h of planar substrate 2. That is, referring to FIGS. 1 and 2, since the semiconductor layer 30 of the light emitting device according to the present invention is formed on the uneven surface 1 a of the uneven substrate 1, the flat surface 2 of the flat substrate 2 is formed. The surface area is larger than that of the semiconductor layer 30 formed on h.
- the semiconductor layer 30 has a constant light emission amount per unit surface area, by increasing the surface area of the semiconductor layer 30 as described above, light emission can be performed without changing the size of the light emitting device. The amount can be increased.
- the surface shape of the uneven surface 1a of the uneven substrate 1 is not particularly limited.
- the uneven surface 1a having a linear concave portion may be used, or as shown in FIG. It may be a polygonal pyramid-shaped uneven surface 1a having point-like convex portions.
- the uneven pitch (horizontal distance from the convex portion to the adjacent convex portion) P and the uneven height (vertical distance from the concave portion to the convex portion) H on the uneven surface 1a of the uneven substrate 1 are particularly limited.
- uneven pitch P is 1 IX! To 300 m
- the height H of the unevenness is preferably 0.1 / m to 300 xm. If the uneven pitch P is less than 1 m or more than 30000 xm, it becomes difficult to obtain a uniform epitaxy crystal. If the height H is less than 0.1 nm, the light emitting area becomes small, and if it exceeds 300 m, it becomes difficult to obtain a uniform epitaxy crystal. From such a viewpoint, it is more preferable that the uneven pitch P is 1 m to 500 nm and the uneven height H is 4 m to 500 m.
- the uneven substrate and the semiconductor layer is A l x G a y I. X. Y N (0 ⁇ x, 0 ⁇ y, x + y ⁇ 1) it is preferably.
- the semiconductor layer is a group III compound Al x G a y I (0 ⁇ x, 0 ⁇ y, x + y ⁇ 1), the light emitting device for the three primary colors of visible light, "blue", "green”, “red”, or "ultraviolet” Can be made.
- Al x G a y I By using (0 ⁇ x, 0 ⁇ y, x + y ⁇ l), a good quality semiconductor crystal can be grown.
- the chemical composition of the substrate, the chemical composition of the semiconductor layer, and the combination thereof Is preferred.
- L is an integer of 1 to 4. It is preferable to have at least one face index selected from (1 1-2 L) and (1-1 0 L).
- a 1 X G a y I n l;. Y N (0 ⁇ x, 0 ⁇ y, x + y ⁇ 1) for the substrate and the semiconductor layer the A 1 X G a y I ⁇ ⁇ , ⁇ crystal is Because of hexagonal symmetry, there are six equivalent planes for each of the (1 1-2 L) plane and the (111-L) plane.
- L means an integer of 1 to 4.
- the uneven substrate 1 having the uneven surface 1a composed of such a surface a three-dimensional semiconductor layer can be formed, and the surface area of the semiconductor layer can be increased. it can.
- the uneven substrate is Al x Ga y I ri -yN (0 ⁇ x, 0 ⁇ y, x + y ⁇ 1)
- the polygonal pyramid on the uneven surface 1a as shown in Fig. 4 It often forms hexagonal pyramids or triangular pyramids.
- the angle between each of the planes 1 b and 1 c forming the uneven surface 1 a of the uneven substrate 1 and the base plane 1 h ⁇ lib, 11 c is preferably 35 ° to 80 °.
- a l x Ga y I. X When using a y N crystal as uneven substrate, 80. Is difficult to exist. If the angle is less than 35 °, the increase in the surface area of the semiconductor layer is small.
- the base plane 1 h refers to a plane perpendicular to the vector in the thickness direction of the uneven substrate 1, and is a plane parallel to the planar surface in a conventional flat substrate.
- the concave and convex pitch P is 200 m and the concave and convex height H is 190 zm.
- the irregularities of the GaN substrate A 5 m, n-GaN layer 31 was formed on the glass-like surface by MOC VD (Metal Organic Chemical Vapor Deposition).
- the light emitting device as shown in FIG. 1 was obtained by sequentially growing the 8N layer 33 to 60 nm and the p-GaN layer 34 to 150 nm.
- the light emission intensity of the light emitting device was measured using a spectroscope.
- This light-emitting device had a peak wavelength of the light-emitting spectrum of 470 nm, and the light-emitting intensity of this light-emitting device was 1.9 when the light-emitting intensity of Comparative Example 1 was 1.0.
- the semiconductor layer was grown on the uneven surface of the uneven substrate using the MOCVD method.
- the semiconductor layer can be grown by various methods such as molecular beam epitaxy (Molecular Beam Epitaxy).
- the flat surface 2h (because of the flat shape, the pitch P of the unevenness is 0 m, and the height H of the unevenness is O im).
- GaN substrate 001
- semiconductor layers were sequentially grown in the same manner as in Example 1 to obtain a light emitting device as shown in FIG.
- the light emission intensity of the light emitting device was measured using a spectroscope.
- the peak wavelength of the light emitting spectrum of this light emitting device was 470 nm, and the light emitting intensity of the blue light emitting devices of Examples 1 to 9 was evaluated with the light emitting intensity of this light emitting device being 1.0.
- Tables 1 to 3 Light emitting devices having the substrate and semiconductor layer configurations shown in Tables 1 to 3 were fabricated by MOCVD, and the wavelength and emission intensity of the emission spectrum were measured. Tables 1 to 3 summarize the results.
- the angle ⁇ in Tables 1 to 3 was calculated from Equation (1) from the plane index of each plane and the plane index (0001) of the base plane, which form the uneven surface of the uneven substrate. is there.
- Examples 1 to 9 and Comparative Example 1 in Table 1 are examples of a blue light emitting device having a light emitting spectrum with a peak wavelength of 470 nm. The light intensity was expressed as a relative value when the emission intensity of Comparative Example 1 was set to 1.0.
- Example 10 and Comparative Example 2 in Table 2 are examples of a green light-emitting device in which the peak wavelength of the light emitting spectrum is 520 nm, and the emission intensity of Example 10 is lower than that of Comparative Example 2.
- Example 11 and Comparative Example 3 are examples of an ultraviolet light-emitting device having a peak wavelength of an emission spectrum of 380 nm. The intensity was expressed as a relative value when the emission intensity of Comparative Example 3 was set to 1.0.
- the semiconductor layer is formed on the uneven surface of the uneven substrate regardless of the emission peak wavelength.
- the luminous intensity increased from 1.2 times to 2.5 times as compared with the conventional light emitting device.
- the amount of light emission can be increased without changing the size of the light emitting device by forming the semiconductor layer on the uneven surface of the uneven substrate.
Landscapes
- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Computer Hardware Design (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Power Engineering (AREA)
- Led Devices (AREA)
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US10/522,829 US20060054942A1 (en) | 2003-06-18 | 2004-05-31 | Light emitting device |
EP04735500A EP1542292A1 (en) | 2003-06-18 | 2004-05-31 | Light emitting device |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2003-173465 | 2003-06-18 | ||
JP2003173465A JP2005011944A (ja) | 2003-06-18 | 2003-06-18 | 発光装置 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2004114420A1 true WO2004114420A1 (ja) | 2004-12-29 |
Family
ID=33534724
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/JP2004/007873 WO2004114420A1 (ja) | 2003-06-18 | 2004-05-31 | 発光装置 |
Country Status (6)
Country | Link |
---|---|
US (1) | US20060054942A1 (ja) |
EP (1) | EP1542292A1 (ja) |
JP (1) | JP2005011944A (ja) |
CN (1) | CN1701447A (ja) |
TW (1) | TW200511609A (ja) |
WO (1) | WO2004114420A1 (ja) |
Families Citing this family (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR100649641B1 (ko) * | 2005-05-31 | 2006-11-27 | 삼성전기주식회사 | Led 패키지 |
KR100682877B1 (ko) | 2005-07-12 | 2007-02-15 | 삼성전기주식회사 | 발광다이오드 및 그 제조방법 |
KR100649769B1 (ko) | 2005-12-28 | 2006-11-27 | 삼성전기주식회사 | 반도체 발광 다이오드 및 그 제조 방법 |
DE102006043400A1 (de) * | 2006-09-15 | 2008-03-27 | Osram Opto Semiconductors Gmbh | Optoelektronischer Halbleiterchip |
JP5165264B2 (ja) | 2007-03-22 | 2013-03-21 | 浜松ホトニクス株式会社 | 窒化物半導体基板 |
CN101661981B (zh) * | 2008-08-29 | 2014-10-22 | 广镓光电股份有限公司 | 用于制造发光元件的基板以及利用该基板制造的发光元件 |
JP5229270B2 (ja) * | 2010-05-14 | 2013-07-03 | 豊田合成株式会社 | Iii族窒化物半導体発光素子の製造方法 |
WO2012018116A1 (ja) | 2010-08-06 | 2012-02-09 | 日亜化学工業株式会社 | サファイア基板と半導体発光素子 |
JP5980667B2 (ja) * | 2011-12-03 | 2016-08-31 | ツィンファ ユニバーシティ | 発光ダイオード |
JP5980669B2 (ja) * | 2011-12-03 | 2016-08-31 | ツィンファ ユニバーシティ | 発光ダイオード |
JP5980668B2 (ja) * | 2011-12-03 | 2016-08-31 | ツィンファ ユニバーシティ | 発光ダイオード |
JP2013140879A (ja) * | 2012-01-05 | 2013-07-18 | Ushio Inc | 電子線励起型光源装置 |
CN102867896B (zh) * | 2012-09-26 | 2015-10-14 | 湘能华磊光电股份有限公司 | Led外延结构及其制备方法 |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0715033A (ja) * | 1993-06-28 | 1995-01-17 | Japan Energy Corp | 半導体発光装置 |
JPH08222763A (ja) * | 1995-02-16 | 1996-08-30 | Sharp Corp | 半導体発光素子 |
JP2003092426A (ja) * | 2001-09-18 | 2003-03-28 | Nichia Chem Ind Ltd | 窒化物系化合物半導体発光素子およびその製造方法 |
Family Cites Families (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US7042150B2 (en) * | 2002-12-20 | 2006-05-09 | Showa Denko K.K. | Light-emitting device, method of fabricating the device, and LED lamp using the device |
KR100504180B1 (ko) * | 2003-01-29 | 2005-07-28 | 엘지전자 주식회사 | 질화물 화합물 반도체의 결정성장 방법 |
-
2003
- 2003-06-18 JP JP2003173465A patent/JP2005011944A/ja not_active Withdrawn
-
2004
- 2004-05-31 CN CN200480000800.8A patent/CN1701447A/zh active Pending
- 2004-05-31 US US10/522,829 patent/US20060054942A1/en not_active Abandoned
- 2004-05-31 EP EP04735500A patent/EP1542292A1/en not_active Withdrawn
- 2004-05-31 WO PCT/JP2004/007873 patent/WO2004114420A1/ja not_active Application Discontinuation
- 2004-06-02 TW TW093115831A patent/TW200511609A/zh unknown
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JPH0715033A (ja) * | 1993-06-28 | 1995-01-17 | Japan Energy Corp | 半導体発光装置 |
JPH08222763A (ja) * | 1995-02-16 | 1996-08-30 | Sharp Corp | 半導体発光素子 |
JP2003092426A (ja) * | 2001-09-18 | 2003-03-28 | Nichia Chem Ind Ltd | 窒化物系化合物半導体発光素子およびその製造方法 |
Also Published As
Publication number | Publication date |
---|---|
US20060054942A1 (en) | 2006-03-16 |
CN1701447A (zh) | 2005-11-23 |
JP2005011944A (ja) | 2005-01-13 |
TW200511609A (en) | 2005-03-16 |
EP1542292A1 (en) | 2005-06-15 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
JP5532930B2 (ja) | エピタキシャル成長用基板、GaN系半導体膜の製造方法、GaN系半導体膜、GaN系半導体発光素子の製造方法およびGaN系半導体発光素子 | |
CN102479900B (zh) | 第iii族氮化物半导体发光器件 | |
JP5635013B2 (ja) | エピタキシャル成長用テンプレート及びその作製方法 | |
JP3966207B2 (ja) | 半導体結晶の製造方法及び半導体発光素子 | |
WO2010016532A1 (ja) | Iii族 窒化物半導体積層構造体およびその製造方法 | |
US20110263061A1 (en) | Semiconductor light emitting device having patterned substrate and manufacturing method of the same | |
CN106233429A (zh) | 获得平坦的半极性氮化镓表面的方法 | |
WO2004114420A1 (ja) | 発光装置 | |
JP2010258459A (ja) | 窒化物半導体構造とその製造方法および発光素子 | |
CN101617388B (zh) | 氮化物半导体基板 | |
CN102593297A (zh) | 模板、其制造方法及制造半导体发光器件的方法 | |
CN104218131B (zh) | 制造第iii族氮化物半导体的方法和第iii族氮化物半导体 | |
JP2009018983A (ja) | GaN基板、エピタキシャル層付き基板、半導体装置、およびGaN基板の製造方法 | |
TW201706465A (zh) | 氮化物半導體成長用基板及其製造方法、以及半導體器件及其製造方法 | |
JP2011042542A (ja) | Iii族窒化物基板の製造方法およびiii族窒化物基板 | |
CN103647008A (zh) | 生长半极性GaN厚膜的方法 | |
WO2011058697A1 (ja) | 窒化物半導体素子の製造方法 | |
KR20130122727A (ko) | 광학 소자의 제조 방법 | |
JP4457609B2 (ja) | 窒化ガリウム(GaN)の製造方法 | |
US11688825B2 (en) | Composite substrate and light-emitting diode | |
JP5246236B2 (ja) | Iii族窒化物半導体発光素子の製造方法 | |
CN101483212A (zh) | 三族氮化合物半导体发光二极管及其制造方法 | |
JP2023527887A (ja) | 光電子デバイス及び光電子デバイスの製造方法 | |
CN112530791A (zh) | 一种生长高密度铟镓氮量子点的方法 | |
JP5080820B2 (ja) | 窒化物半導体構造とその製造方法および発光素子 |
Legal Events
Date | Code | Title | Description |
---|---|---|---|
AK | Designated states |
Kind code of ref document: A1 Designated state(s): AE AG AL AM AT AU AZ BA BB BG BR BW BY BZ CA CH CN CO CR CU CZ DE DK DM DZ EC EE EG ES FI GB GD GE GH GM HR HU ID IL IN IS KE KG KP KR KZ LC LK LR LS LT LU LV MA MD MG MK MN MW MX MZ NA NI NO NZ OM PG PH PL PT RO RU SC SD SE SG SK SL SY TJ TM TN TR TT TZ UA UG US UZ VC VN YU ZA ZM ZW |
|
AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): BW GH GM KE LS MW MZ NA SD SL SZ TZ UG ZM ZW AM AZ BY KG KZ MD RU TJ TM AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LU MC NL PL PT RO SE SI SK TR BF BJ CF CG CI CM GA GN GQ GW ML MR NE SN TD TG |
|
WWE | Wipo information: entry into national phase |
Ref document number: 2004735500 Country of ref document: EP |
|
ENP | Entry into the national phase |
Ref document number: 2006054942 Country of ref document: US Kind code of ref document: A1 |
|
WWE | Wipo information: entry into national phase |
Ref document number: 10522829 Country of ref document: US |
|
121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
WWE | Wipo information: entry into national phase |
Ref document number: 20048008008 Country of ref document: CN |
|
WWP | Wipo information: published in national office |
Ref document number: 2004735500 Country of ref document: EP |
|
WWW | Wipo information: withdrawn in national office |
Ref document number: 2004735500 Country of ref document: EP |
|
WWP | Wipo information: published in national office |
Ref document number: 10522829 Country of ref document: US |