JP6521443B2 - 深紫外光を放射する半導体発光素子、該半導体発光素子を備える発光モジュール、及び該半導体発光素子の製造方法 - Google Patents
深紫外光を放射する半導体発光素子、該半導体発光素子を備える発光モジュール、及び該半導体発光素子の製造方法 Download PDFInfo
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- JP6521443B2 JP6521443B2 JP2015130266A JP2015130266A JP6521443B2 JP 6521443 B2 JP6521443 B2 JP 6521443B2 JP 2015130266 A JP2015130266 A JP 2015130266A JP 2015130266 A JP2015130266 A JP 2015130266A JP 6521443 B2 JP6521443 B2 JP 6521443B2
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- Prior art keywords
- light emitting
- semiconductor light
- substrate
- emitting device
- deep ultraviolet
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- 125000000475 sulfinyl group Chemical group [*:2]S([*:1])=O 0.000 description 3
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- QPFMBZIOSGYJDE-UHFFFAOYSA-N 1,1,2,2-tetrachloroethane Chemical compound ClC(Cl)C(Cl)Cl QPFMBZIOSGYJDE-UHFFFAOYSA-N 0.000 description 2
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- GTDPSWPPOUPBNX-UHFFFAOYSA-N ac1mqpva Chemical compound CC12C(=O)OC(=O)C1(C)C1(C)C2(C)C(=O)OC1=O GTDPSWPPOUPBNX-UHFFFAOYSA-N 0.000 description 2
- 125000003277 amino group Chemical group 0.000 description 2
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- FLJPGEWQYJVDPF-UHFFFAOYSA-L caesium sulfate Chemical compound [Cs+].[Cs+].[O-]S([O-])(=O)=O FLJPGEWQYJVDPF-UHFFFAOYSA-L 0.000 description 2
- 229910001634 calcium fluoride Inorganic materials 0.000 description 2
- 150000001721 carbon Chemical group 0.000 description 2
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 2
- 238000005229 chemical vapour deposition Methods 0.000 description 2
- 229910052801 chlorine Inorganic materials 0.000 description 2
- 150000001805 chlorine compounds Chemical class 0.000 description 2
- 125000001309 chloro group Chemical group Cl* 0.000 description 2
- 238000005253 cladding Methods 0.000 description 2
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- 125000004122 cyclic group Chemical group 0.000 description 2
- JHIVVAPYMSGYDF-UHFFFAOYSA-N cyclohexanone Chemical compound O=C1CCCCC1 JHIVVAPYMSGYDF-UHFFFAOYSA-N 0.000 description 2
- IZAJHCHUTYYTGP-UHFFFAOYSA-M cyclohexyl(trimethyl)azanium;methanesulfonate Chemical compound CS([O-])(=O)=O.C[N+](C)(C)C1CCCCC1 IZAJHCHUTYYTGP-UHFFFAOYSA-M 0.000 description 2
- WVIIMZNLDWSIRH-UHFFFAOYSA-N cyclohexylcyclohexane Chemical group C1CCCCC1C1CCCCC1 WVIIMZNLDWSIRH-UHFFFAOYSA-N 0.000 description 2
- BGTOWKSIORTVQH-UHFFFAOYSA-N cyclopentanone Chemical compound O=C1CCCC1 BGTOWKSIORTVQH-UHFFFAOYSA-N 0.000 description 2
- 125000000118 dimethyl group Chemical group [H]C([H])([H])* 0.000 description 2
- 239000006185 dispersion Substances 0.000 description 2
- POULHZVOKOAJMA-UHFFFAOYSA-N dodecanoic acid Chemical compound CCCCCCCCCCCC(O)=O POULHZVOKOAJMA-UHFFFAOYSA-N 0.000 description 2
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- DCAYPVUWAIABOU-UHFFFAOYSA-N hexadecane Chemical compound CCCCCCCCCCCCCCCC DCAYPVUWAIABOU-UHFFFAOYSA-N 0.000 description 2
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- FUZZWVXGSFPDMH-UHFFFAOYSA-N hexanoic acid Chemical compound CCCCCC(O)=O FUZZWVXGSFPDMH-UHFFFAOYSA-N 0.000 description 2
- 125000002887 hydroxy group Chemical group [H]O* 0.000 description 2
- 229910052740 iodine Inorganic materials 0.000 description 2
- ZXEKIIBDNHEJCQ-UHFFFAOYSA-N isobutanol Chemical compound CC(C)CO ZXEKIIBDNHEJCQ-UHFFFAOYSA-N 0.000 description 2
- KQNPFQTWMSNSAP-UHFFFAOYSA-N isobutyric acid Chemical compound CC(C)C(O)=O KQNPFQTWMSNSAP-UHFFFAOYSA-N 0.000 description 2
- AMXOYNBUYSYVKV-UHFFFAOYSA-M lithium bromide Chemical compound [Li+].[Br-] AMXOYNBUYSYVKV-UHFFFAOYSA-M 0.000 description 2
- KWGKDLIKAYFUFQ-UHFFFAOYSA-M lithium chloride Chemical compound [Li+].[Cl-] KWGKDLIKAYFUFQ-UHFFFAOYSA-M 0.000 description 2
- 239000000395 magnesium oxide Substances 0.000 description 2
- CPLXHLVBOLITMK-UHFFFAOYSA-N magnesium oxide Inorganic materials [Mg]=O CPLXHLVBOLITMK-UHFFFAOYSA-N 0.000 description 2
- AXZKOIWUVFPNLO-UHFFFAOYSA-N magnesium;oxygen(2-) Chemical compound [O-2].[Mg+2] AXZKOIWUVFPNLO-UHFFFAOYSA-N 0.000 description 2
- UAEPNZWRGJTJPN-UHFFFAOYSA-N methylcyclohexane Chemical compound CC1CCCCC1 UAEPNZWRGJTJPN-UHFFFAOYSA-N 0.000 description 2
- 238000001451 molecular beam epitaxy Methods 0.000 description 2
- VLKZOEOYAKHREP-UHFFFAOYSA-N n-Hexane Chemical compound CCCCCC VLKZOEOYAKHREP-UHFFFAOYSA-N 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 125000004433 nitrogen atom Chemical group N* 0.000 description 2
- BKIMMITUMNQMOS-UHFFFAOYSA-N nonane Chemical compound CCCCCCCCC BKIMMITUMNQMOS-UHFFFAOYSA-N 0.000 description 2
- RZJRJXONCZWCBN-UHFFFAOYSA-N octadecane Chemical compound CCCCCCCCCCCCCCCCCC RZJRJXONCZWCBN-UHFFFAOYSA-N 0.000 description 2
- TVMXDCGIABBOFY-UHFFFAOYSA-N octane Chemical compound CCCCCCCC TVMXDCGIABBOFY-UHFFFAOYSA-N 0.000 description 2
- WWZKQHOCKIZLMA-UHFFFAOYSA-N octanoic acid Chemical compound CCCCCCCC(O)=O WWZKQHOCKIZLMA-UHFFFAOYSA-N 0.000 description 2
- 150000002894 organic compounds Chemical class 0.000 description 2
- 125000000962 organic group Chemical group 0.000 description 2
- 125000004430 oxygen atom Chemical group O* 0.000 description 2
- RVTZCBVAJQQJTK-UHFFFAOYSA-N oxygen(2-);zirconium(4+) Chemical compound [O-2].[O-2].[Zr+4] RVTZCBVAJQQJTK-UHFFFAOYSA-N 0.000 description 2
- 238000000059 patterning Methods 0.000 description 2
- FDPIMTJIUBPUKL-UHFFFAOYSA-N pentan-3-one Chemical compound CCC(=O)CC FDPIMTJIUBPUKL-UHFFFAOYSA-N 0.000 description 2
- 229920000098 polyolefin Polymers 0.000 description 2
- 229920001296 polysiloxane Polymers 0.000 description 2
- 229910052700 potassium Inorganic materials 0.000 description 2
- 239000011591 potassium Substances 0.000 description 2
- SCVFZCLFOSHCOH-UHFFFAOYSA-M potassium acetate Chemical compound [K+].CC([O-])=O SCVFZCLFOSHCOH-UHFFFAOYSA-M 0.000 description 2
- IOLCXVTUBQKXJR-UHFFFAOYSA-M potassium bromide Chemical compound [K+].[Br-] IOLCXVTUBQKXJR-UHFFFAOYSA-M 0.000 description 2
- DEDZSLCZHWTGOR-UHFFFAOYSA-N propylcyclohexane Chemical compound CCCC1CCCCC1 DEDZSLCZHWTGOR-UHFFFAOYSA-N 0.000 description 2
- 239000010453 quartz Substances 0.000 description 2
- JAAGVIUFBAHDMA-UHFFFAOYSA-M rubidium bromide Chemical compound [Br-].[Rb+] JAAGVIUFBAHDMA-UHFFFAOYSA-M 0.000 description 2
- FGDZQCVHDSGLHJ-UHFFFAOYSA-M rubidium chloride Chemical compound [Cl-].[Rb+] FGDZQCVHDSGLHJ-UHFFFAOYSA-M 0.000 description 2
- 239000010703 silicon Substances 0.000 description 2
- 239000002356 single layer Substances 0.000 description 2
- JHJLBTNAGRQEKS-UHFFFAOYSA-M sodium bromide Chemical compound [Na+].[Br-] JHJLBTNAGRQEKS-UHFFFAOYSA-M 0.000 description 2
- 229910052938 sodium sulfate Inorganic materials 0.000 description 2
- GEHJYWRUCIMESM-UHFFFAOYSA-L sodium sulfite Chemical compound [Na+].[Na+].[O-]S([O-])=O GEHJYWRUCIMESM-UHFFFAOYSA-L 0.000 description 2
- 235000011152 sodium sulphate Nutrition 0.000 description 2
- 229910000679 solder Inorganic materials 0.000 description 2
- 239000002904 solvent Substances 0.000 description 2
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Description
図1及び図2を参照して、実施の形態1に係る深紫外光を放射する半導体発光素子1は、主に、基板11と、n型半導体層12と、活性層13と、p型半導体層14と、n型電極15と、p型電極16とを備える。
図36及び図37を参照して、実施の形態2に係る半導体発光素子2を説明する。本実施の形態の半導体発光素子2は、基本的には、図1及び図2に示す実施の形態1の半導体発光素子1と同様の構成を備え、同様の効果を得ることができるが、主に以下の点で異なる。
図39を参照して、実施の形態3に係る発光モジュール5を説明する。
本実施の形態に係る発光モジュール5は、図2に示される半導体発光素子1と、半導体発光素子1を支持する支持部材(30)と、半導体発光素子1を収容するパッケージ(30,40,44)とを備える。パッケージ(30,40,44)は、半導体発光素子1から放射される光に対して透明な透明部材40を有する。本実施の形態の発光モジュール5によれば、向上した光取り出し効率を有する、深紫外光を放射する半導体発光素子1を備える発光モジュールを提供することができる。
図40を参照して、実施の形態4に係る発光モジュール5aを説明する。本実施の形態の発光モジュール5aは、基本的には、図39に示す実施の形態3の発光モジュール5と同様の構成を備え、同様の効果を得ることができるが、主に以下の点で異なる。本実施の形態に係る発光モジュール5aは、主に、深紫外光18を放射する半導体発光素子2と、半導体発光素子2を支持する支持部材(60)と、半導体発光素子2を収容するパッケージ(40、60)とを備える。
図41を参照して、実施の形態5に係る発光モジュール5bを説明する。本実施の形態の発光モジュール5bは、基本的には、図40に示す実施の形態4の発光モジュール5aと同様の構成を備え、同様の効果を得ることができるが、主に以下の点で異なる。
図42を参照して、実施の形態6に係る発光モジュール5cを説明する。本実施の形態の発光モジュール5cは、基本的には、図39に示す実施の形態3の発光モジュール5と同様の構成を備え、同様の効果を得ることができるが、主に以下の点で異なる。本実施の形態に係る発光モジュール5cは、主に、深紫外光18を放射する半導体発光素子2と、半導体発光素子2を支持する支持部材(30)と、半導体発光素子2を封止する液体50と、半導体発光素子2と液体50とを収容するパッケージ(30、40c)とを備える。
本実施の形態に係る発光モジュール5cは、半導体発光素子2を封止する液体50をさらに備える。液体50は、半導体発光素子2から放射される深紫外光18に対して透明である。パッケージ(30,40c)は、液体50をさらに収容する。
Claims (17)
- 第1の主面と、前記第1の主面と反対側の第2の主面と、前記第1の主面と前記第2の主面との間に延在する側面とを有する基板と、
前記基板の前記第1の主面上に設けられた活性層とを備え、
前記基板の前記第1の主面と少なくとも一部の前記側面とがなす角の補角は、20°以上70°以下、または、100°以上140°以下であり、
前記基板の光吸収係数α(cm-1)及び前記基板の厚さt(μm)は、340exp(−0.16α)≦t≦3200α-0.7を満たす、深紫外光を放射する半導体発光素子。 - 前記基板は、窒化アルミニウムで形成される、請求項1に記載の半導体発光素子。
- 前記基板は、サファイアで形成される、請求項1に記載の半導体発光素子。
- 前記側面は、前記補角の大きさが異なる複数の部分を含む、請求項1から請求項3のいずれか一項に記載の半導体発光素子。
- 前記半導体発光素子は、前記第2の主面に、前記半導体発光素子の前記活性層から放射される前記深紫外光を前記半導体発光素子の外部に取り出す効率を向上させる凹凸構造をさらに有する、請求項1から請求項4のいずれか一項に記載の半導体発光素子。
- 前記半導体発光素子から放射される前記深紫外光は、190nm以上350nm以下の波長を有する、請求項1から請求項5のいずれか一項に記載の半導体発光素子。
- 前記半導体発光素子から放射される前記深紫外光は、200nm以上320nm以下の波長を有する、請求項1から請求項6のいずれか一項に記載の半導体発光素子。
- 前記半導体発光素子から放射される前記深紫外光は、220nm以上300nm以下の波長を有する、請求項1から請求項6のいずれか一項に記載の半導体発光素子。
- 請求項1から請求項8のいずれか一項に記載の半導体発光素子と、
前記半導体発光素子を支持する支持部材と、
前記半導体発光素子を収容するパッケージとを備え、
前記パッケージは前記半導体発光素子から放射される前記深紫外光に対して透明な透明部材を有する、発光モジュール。 - 前記半導体発光素子側の前記支持部材の表面に、反射部材が設けられる、請求項9に記載の発光モジュール。
- 前記半導体発光素子を封止する液体をさらに備え、前記液体は、前記半導体発光素子から放射される前記深紫外光に対して透明であり、
前記パッケージは前記液体をさらに収容する、請求項9または請求項10に記載の発光モジュール。 - 第1の主面と、前記第1の主面と反対側の第2の主面とを有するウエハの光吸収係数α(cm-1)を求めることと、
前記ウエハの前記第1の主面上に活性層を形成することと、
前記ウエハの前記光吸収係数α(cm-1)及び前記ウエハの厚さt(μm)が、340exp(−0.16α)≦t≦3200α-0.7を満たすように、前記ウエハの前記厚さtを定めることと、
前記ウエハを、複数の基板に分割することとを備え、前記複数の基板のそれぞれは、前記活性層が形成された第1の主面と、前記第1の主面と反対側の第2の主面と、前記第1の主面と前記第2の主面との間に延在する側面とを有し、さらに、
前記基板の前記第1の主面と前記基板の少なくとも一部の前記側面とがなす角の補角が、20°以上70°以下、または、100°以上140°以下になるように、前記基板の前記少なくとも一部の前記側面を加工することを備える、深紫外光を放射する半導体発光素子の製造方法。 - 前記基板は、窒化アルミニウムで形成される、請求項12に記載の半導体発光素子の製造方法。
- 前記基板は、サファイアで形成される、請求項12に記載の半導体発光素子の製造方法。
- 前記基板の前記少なくとも一部の前記側面を加工することは、先端にテーパ部を有するブレードを用いることを含む、請求項12から請求項14のいずれか一項に記載の半導体発光素子の製造方法。
- 前記基板の前記少なくとも一部の前記側面を加工することは、前記基板の前記側面に、前記補角の大きさが異なる複数の部分を形成することを含む、請求項12から請求項15のいずれか一項に記載の半導体発光素子の製造方法。
- 前記ウエハの前記第2の主面に、前記半導体発光素子の前記活性層から放射される前記深紫外光を前記半導体発光素子の外部に取り出す効率を向上させる凹凸構造を形成することをさらに備える、請求項12から請求項16のいずれか一項に記載の半導体発光素子の製造方法。
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