WO2015185549A1 - Optoelektronisches bauelement - Google Patents
Optoelektronisches bauelement Download PDFInfo
- Publication number
- WO2015185549A1 WO2015185549A1 PCT/EP2015/062255 EP2015062255W WO2015185549A1 WO 2015185549 A1 WO2015185549 A1 WO 2015185549A1 EP 2015062255 W EP2015062255 W EP 2015062255W WO 2015185549 A1 WO2015185549 A1 WO 2015185549A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- radiation
- optoelectronic component
- cover
- semiconductor chip
- previous
- Prior art date
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/44—Semiconductor devices with at least one potential-jump barrier or surface barrier 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 coatings, e.g. passivation layer or anti-reflective coating
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier 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 body packages
- H01L33/50—Wavelength conversion elements
- H01L33/501—Wavelength conversion elements characterised by the materials, e.g. binder
- H01L33/502—Wavelength conversion materials
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier 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 body packages
- H01L33/50—Wavelength conversion elements
- H01L33/507—Wavelength conversion elements the elements being in intimate contact with parts other than the semiconductor body or integrated with parts other than the semiconductor body
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
- H01L33/00—Semiconductor devices with at least one potential-jump barrier or surface barrier specially adapted for light emission; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
- H01L33/48—Semiconductor devices with at least one potential-jump barrier or surface barrier 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 body packages
- H01L33/58—Optical field-shaping elements
Definitions
- the invention relates to an optoelectronic component, in particular an optoelectronic component emitting in the infrared spectral range.
- Specify spectral region-emitting optoelectronic component which distinguishes good heat dissipation, improved optical properties and high long-term stability.
- this includes
- optoelectronic component a radiation-emitting semiconductor chip and a conversion element which is suitable for at least a part of the semiconductor chip
- the converted radiation has a greater wavelength than the emitted radiation.
- the conversion element may be suitable for absorbing at least part of the emitted radiation and for re-emitting radiation having a greater wavelength.
- the optoelectronic component comprises at least one of
- the converted radiation transmissive cover which follows the conversion element in a main radiation direction of the radiation emitted by the semiconductor chip radiation.
- the cover can be used in particular on a housing of the optoelectronic
- the conversion element advantageously comprises a quantum dot converter material in the optoelectronic component.
- a quantum dot converter material contains quantum dots (quantum dots), which may be present in particular in the form of nanocrystals, which typically have a
- the quantum dot converter material may contain particular quantum dots based on compounds of Cd or Pb.
- the quantum dots contain compounds with at least one of the elements Cd, Pb, Se, Te or Sb.
- the conversion element is in the optoelectronic
- Conversion element preferably does not directly adjoin the semiconductor chip.
- the conversion element can in particular be formed by a layer of a matrix material into which the
- Matrix material is preferred for both of the
- the matrix material may in particular be a polymer.
- the Matrimaterial can beispieilus a silicone, a
- Epoxy an acrylate or polystyrene.
- the cover of the optoelectronic component comprises silicon or consists of silicon.
- the cover is preferably a silicon disk, which may in particular be made of a silicon semiconductor wafer.
- the cover is preferably about 100 ym to 500 ym thick.
- Optoelectronic component resulting heat in the conversion element via the cover which comprises or consists of silicon, are efficiently dissipated.
- the radiation emitter emits
- Semiconductor chip infrared radiation.
- the radiation-emitting semiconductor chip emits in the near-infrared spectral range (NIR). According to at least one embodiment, that of the
- Conversion element generated converted radiation infrared radiation may be suitable for converting infrared radiation emitted by the radiation-emitting semiconductor chip into infrared radiation having a greater wavelength.
- the cover is absorbent for the emitted radiation. This may mean in particular that the coverage is at least 90 percent,
- the cover comprises or consists of silicon, in particular the absorption of silicon for absorption of the radiation emitted by the semiconductor chip is utilized.
- Silicon is known to have a high absorption for wavelengths less than about 1100 nm and is suitable for
- Wavelengths above about 1100 nm are substantially transparent.
- Radiation has a wavelength X e ⁇ 1100 nm, wherein the converted radiation preferably has a wavelength X c > 1200 nm.
- the converted radiation preferably has a wavelength X c > 1200 nm.
- Wavelength of the radiation emitted by the semiconductor chip a wavelength below the absorption edge of silicon and the converted radiation has a wavelength above the Absorption edge of silicon, which is at about 1100 nm.
- an outer side of the cover facing away from the semiconductor chip has a structure for beam shaping of the radiation emitted by the optoelectronic component, in particular that in the conversion element.
- the cover has the function of a function in addition to the functions described above
- Beam-shaping element on. The on the outside of the
- Cover formed for beam shaping structure may in particular a microlens structure or a
- optoelectronic component has one of the
- optoelectronic component has one of the
- Antireflection coating advantageously reduces the Reflection at the interface between the cover and the surrounding medium and thus improves the radiation decoupling from the optoelectronic component.
- Antireflection coating may be a single layer or a layer system of several individual layers, in particular dielectric layers.
- the first layer or a layer system of several individual layers in particular dielectric layers.
- the cover is provided with a housing of the optoelectronic component
- the housing may for example be wholly or partly formed of a thermally conductive material.
- at least side walls of the housing have a metal or are coated with a metal. In this way, the heat released from the conversion element to the cover can advantageously be dissipated to the housing of the optoelectronic component.
- the radiation-emitting semiconductor chip has an active layer comprising Al n Ga m Ini_ n _ m As, where 0 ⁇ n ⁇ 1, 0 ⁇ m ⁇ 1 and n + m ⁇ 1.
- An arsenide compound semiconductor based optoelectronic semiconductor chip is
- Semiconductor chip may in particular be an IR luminescence diode chip or an IR semiconductor laser chip.
- FIG. 1 shows a schematic representation of a cross section through an optoelectronic component according to a first exemplary embodiment
- FIG. 2 shows a schematic representation of a cross section through an optoelectronic component according to a second exemplary embodiment
- Figure 3 is a schematic representation of a cross section through an optoelectronic device according to a third embodiment
- Figure 4 is a schematic representation of a cross section through an optoelectronic device according to a fourth embodiment. Identical or equivalent components are each provided with the same reference numerals in the figures. The
- the optoelectronic component 10 shown in FIG. 1 has a semiconductor chip 2, which is preferably an IR luminescence diode chip emitting in the infrared spectral range.
- the semiconductor chip 2 has an active layer 4.
- the active layer may be a pn junction, a double heterostructure, a single quantum well structure, or a multiple quantum well structure
- quantum well structure includes doing any structure, in the charge carrier through
- Quantization includes quantum wells, quantum wires and quantum dots and any combination of these structures.
- the active layer 4 is arranged, for example, between an n-type semiconductor region 3 and a p-type semiconductor region 5.
- the n-type semiconductor region faces a carrier 1 of the semiconductor chip.
- the semiconductor chip 2 may also be arranged in reverse polarity on the carrier 1. This may be the case, in particular, when the semiconductor chip is embodied as a so-called thin-film chip, in which a material used for growing the semiconductor layer sequence
- the semiconductor chip 2 can in particular on a
- Arsenide compound semiconductors are based. "Based on an arsenide compound semiconductor" in the present context means that the epitaxial layer sequence or at least one layer, in particular the active layer, a
- Arsenide compound semiconductor material preferably
- This material does not necessarily have a
- the radiation 12 emitted by the semiconductor chip 2 is preferably radiation in the near infrared spectral range, which may in particular have a wavelength of more than 780 nm and less than 1100 nm.
- the semiconductor chip 2 is arranged in a housing 11. In the housing 11, the semiconductor chip 2 may be arranged on a carrier 1, preferably thermally and / or
- the carrier 1 of the semiconductor chip 2 may be flush, for example, with a bottom of the housing 11, so that the carrier 1 in the surface mounting of the
- Optoelectronic component 10 can be electrically and / or thermally conductively connected to a circuit board or a heat sink advantageously.
- Construction element 10 may in particular be an SMD component (surface mountable device).
- a reflector 6 may be integrated through which in lateral
- Semiconductor chips 2 is advantageously deflected in a main emission.
- the optoelectronic component 10 is a
- Conversion element 8 is provided to convert at least a portion of the emitted radiation 12 into a converted radiation 13, which has a greater wavelength than the emitted radiation 12 has.
- the conversion element 8 advantageously contains a quantum dot converter material 7.
- the quantum dot converter material may in particular have connections of Cd or Pb.
- the quantum dots contain compounds with at least one of the elements Cd, Pb, Se, Te or Sb.
- the Matrimaterial can, for example
- the nanocrystals may, for example, have sizes between about 1 nm and 100 nm, preferably between 1 nm and 20 nm.
- the quantum dot converter material is advantageously characterized by a high quantum efficiency.
- the conversion element 8 is particularly suitable for converting the emitted radiation 12 into infrared radiation having a wavelength of more than 1200 nm.
- the conversion element 8 is in the optoelectronic
- Component 10 is advantageously applied to a semiconductor chip 2 facing the inside 15 of a cover 9.
- the cover 9 is applied, for example, on the housing 11 and closes in this way the housing 11 at the
- the cover 9 preferably comprises silicon and may in particular consist of silicon.
- the cover 9 is, for example, a slice of silicon, which is preferably about 100 ym to 500 ym thick.
- the use of silicon as the material for the cover 9, which also acts as a support for the conversion element 8, has
- the cover 9 acts as a heat sink for the
- the cover 9, which is formed with or made of silicon, has the advantage that it can act as an absorber for the radiation emitted by the semiconductor chip 2 radiation 12. This is particularly exploited that silicon at
- Wavelengths below about 1100 nm has an absorbing effect. Due to the cover 9 can therefore not converted
- Emission spectrum of the optoelectronic device 10 can be achieved, which is substantially only in the
- Conversion element 8 generated converted radiation 13 contains. Since silicon above its absorption edge at about 1100 nm has a high transparency, the
- the cover 9 preferably closes the housing 11 hermetically at its upper side, as a result of which the semiconductor chip 2 is protected against environmental influences, in particular against the ingress of moisture or oxidation under the influence of oxygen.
- the optoelectronic component 10 is therefore characterized by a high long-term stability.
- outside 16 of the cover 9 In this embodiment, the outside 16 of the cover with a
- the cover 9 is therefore advantageous in addition to its functions as a support for the Conversion element 8, as an absorber for the emitted
- Heat sink for the conversion element 9 still another additional function, namely the optical function of
- the third exemplary embodiment of the optoelectronic component 10 shown in FIG. 3 differs from the first exemplary embodiment shown in FIG. 1 in that the outer side 16 of the cover 9 is provided with a roughening 17.
- the roughening 17 can be produced, for example, by means of an etching process on the outside 16 of the cover 9.
- the roughening 17 has the advantage that reflection losses at the interface between the cover 9 and the
- an antireflection coating 18 is applied to an outside of the semiconductor chip 2 facing away from the outside of the cover 9.
- the antireflection coating 18 may be a single layer or a multi-layer system
- Antireflection coating 18 have one or more dielectric layers. Regarding the others
- Embodiments and advantageous properties corresponds to the fourth embodiment of the first embodiment and will therefore not be explained in detail.
Abstract
Description
Claims
Priority Applications (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US15/316,144 US10483439B2 (en) | 2014-06-05 | 2015-06-02 | Optoelectronic device with silicon slice cover arranged downstream of a conversion element |
CN201580030303.0A CN106463581B (zh) | 2014-06-05 | 2015-06-02 | 光电子器件 |
DE112015002642.8T DE112015002642A5 (de) | 2014-06-05 | 2015-06-02 | Optoelektronisches Bauelement |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102014107960.4 | 2014-06-05 | ||
DE102014107960.4A DE102014107960A1 (de) | 2014-06-05 | 2014-06-05 | Optoelektronisches Bauelement |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2015185549A1 true WO2015185549A1 (de) | 2015-12-10 |
Family
ID=53274552
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2015/062255 WO2015185549A1 (de) | 2014-06-05 | 2015-06-02 | Optoelektronisches bauelement |
Country Status (4)
Country | Link |
---|---|
US (1) | US10483439B2 (de) |
CN (1) | CN106463581B (de) |
DE (2) | DE102014107960A1 (de) |
WO (1) | WO2015185549A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015121720A1 (de) * | 2015-12-14 | 2017-06-14 | Osram Opto Semiconductors Gmbh | Konversionselement, optoelektronisches Bauelement und Verfahren zur Herstellung eines Konversionselements |
Families Citing this family (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102015104237B4 (de) | 2015-03-20 | 2022-10-06 | OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung | Optoelektronisches Bauelement |
DE102016114474A1 (de) * | 2016-08-04 | 2018-02-08 | Osram Opto Semiconductors Gmbh | Bauteil mit einem lichtemittierenden Bauelement |
DE102017101729A1 (de) * | 2017-01-30 | 2018-08-02 | Osram Opto Semiconductors Gmbh | Strahlungsemittierende Vorrichtung |
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2014
- 2014-06-05 DE DE102014107960.4A patent/DE102014107960A1/de not_active Withdrawn
-
2015
- 2015-06-02 WO PCT/EP2015/062255 patent/WO2015185549A1/de active Application Filing
- 2015-06-02 DE DE112015002642.8T patent/DE112015002642A5/de not_active Ceased
- 2015-06-02 CN CN201580030303.0A patent/CN106463581B/zh active Active
- 2015-06-02 US US15/316,144 patent/US10483439B2/en not_active Expired - Fee Related
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Also Published As
Publication number | Publication date |
---|---|
CN106463581A (zh) | 2017-02-22 |
US10483439B2 (en) | 2019-11-19 |
DE112015002642A5 (de) | 2017-02-23 |
US20170125646A1 (en) | 2017-05-04 |
CN106463581B (zh) | 2018-12-11 |
DE102014107960A1 (de) | 2015-12-17 |
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