WO2020069920A1 - Optoelektronisches bauteil, verfahren zur ansteuerung eines optoelektronischen bauteils und beleuchtungsvorrichtung - Google Patents
Optoelektronisches bauteil, verfahren zur ansteuerung eines optoelektronischen bauteils und beleuchtungsvorrichtungInfo
- Publication number
- WO2020069920A1 WO2020069920A1 PCT/EP2019/075716 EP2019075716W WO2020069920A1 WO 2020069920 A1 WO2020069920 A1 WO 2020069920A1 EP 2019075716 W EP2019075716 W EP 2019075716W WO 2020069920 A1 WO2020069920 A1 WO 2020069920A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- optoelectronic component
- radiation
- peak wavelength
- semiconductor layer
- layer sequence
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Ceased
Links
Classifications
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/85—Packages
- H10H20/851—Wavelength conversion means
- H10H20/8511—Wavelength conversion means characterised by their material, e.g. binder
- H10H20/8512—Wavelength conversion materials
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/81—Bodies
- H10H20/814—Bodies having reflecting means, e.g. semiconductor Bragg reflectors
- H10H20/8142—Bodies having reflecting means, e.g. semiconductor Bragg reflectors forming resonant cavity structures
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G7/00—Botany in general
- A01G7/04—Electric or magnetic or acoustic treatment of plants for promoting growth
- A01G7/045—Electric or magnetic or acoustic treatment of plants for promoting growth with electric lighting
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B45/00—Circuit arrangements for operating light-emitting diodes [LED]
- H05B45/20—Controlling the colour of the light
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/81—Bodies
- H10H20/819—Bodies characterised by their shape, e.g. curved or truncated substrates
- H10H20/82—Roughened surfaces, e.g. at the interface between epitaxial layers
-
- H—ELECTRICITY
- H10—SEMICONDUCTOR DEVICES; ELECTRIC SOLID-STATE DEVICES NOT OTHERWISE PROVIDED FOR
- H10H—INORGANIC LIGHT-EMITTING SEMICONDUCTOR DEVICES HAVING POTENTIAL BARRIERS
- H10H20/00—Individual inorganic light-emitting semiconductor devices having potential barriers, e.g. light-emitting diodes [LED]
- H10H20/80—Constructional details
- H10H20/81—Bodies
- H10H20/811—Bodies having quantum effect structures or superlattices, e.g. tunnel junctions
Definitions
- An optoelectronic component and a method for controlling an optoelectronic component are specified.
- a lighting device with an optoelectronic component is specified.
- One task to be solved is to specify an optoelectronic component that is particularly space-saving.
- optoelectronic component and a lighting device can be specified.
- this comprises
- optoelectronic component a semiconductor body which has a first semiconductor layer sequence and a second
- the semiconductor body is, for example, an epitaxial one
- the semiconductor body is based, for example, on a III-V connecting material.
- the first semiconductor layer sequence of the semiconductor body comprises, for example, a first semiconductor region of a first conductivity type and a second semiconductor region of a second, different conductivity type.
- the first semiconductor region is p-doped and thus p-conductive and the second semiconductor region is formed, for example, n-doped and thus n-conductive.
- the optoelectronic component described here it is possible in particular for the first semiconductor layer sequence and the second semiconductor layer sequence to be based on different compound semiconductor materials, in particular on
- Semiconductor layer sequence can preferably be a
- Compound semiconductor materials that contain phosphorus such as the materials from the system In x AlyGa ] _- x -yP with 0 ⁇ x ⁇ 1,
- Semiconductor layer sequence can preferably be an arsenic compound semiconductor material.
- Arsenic compound semiconductor materials are
- Compound semiconductor materials containing arsenic such as the materials from the system In x AlyGa ] __ x _yAs with 0 ⁇ x ⁇ 1,
- the optoelectronic component also has one
- the semiconductor body has a stacking direction transverse or perpendicular to that
- the second semiconductor layer sequence is preferably like this
- Semiconductor layer sequence can occur.
- the second For this purpose, the semiconductor layer sequence is, for example, on a radiation passage area of the first
- the second semiconductor layer sequence is, for example, in
- a large part of the electromagnetic primary radiation generated in the first semiconductor layer sequence enters the second semiconductor layer sequence. Preferred occurs
- the first active region is in particular directly adjacent to the first semiconductor region and the second semiconductor region.
- the first active region preferably has a pn junction for generating the
- electromagnetic primary radiation such as a double heterostructure, a single quantum well structure (SQW structure) or a multiple quantum well structure (MQW structure).
- SQW structure single quantum well structure
- MQW structure multiple quantum well structure
- the first semiconductor layer sequence with the first active region which is formed for example with a phosphide compound semiconductor material or has a phosphide compound semiconductor material, generates, for example electromagnetic radiation in a green to infrared wavelength range.
- Peak wavelength is, for example, between 640 nm and 780 nm inclusive.
- Semiconductor layer sequence has a second active region which has a section which is designed to partially absorb primary electromagnetic radiation and to re-emit it in secondary electromagnetic radiation with a second peak wavelength.
- the second active area can, for example, also have a plurality of
- the sections are arranged one on top of the other along the stacking direction, for example.
- the second active area can have a single quantum well structure (SQW structure) or a multiple quantum well structure (MQW structure).
- the second active area has a single one
- the second active area is a single quantum well structure. If the second active area has, for example, the plurality of sections, the second active area is a multiple quantum well structure with a large number of single quantum well structures.
- Secondary radiation is preferably larger than the first
- the second active area is preferably between two
- connection materials arranged.
- the connecting material which is arranged between the second active region and the first semiconductor layer sequence, connects the first semiconductor layer sequence and the second
- connection materials have Al x GAi_ x As with 0 dx ⁇ 1 or are formed from them.
- Semiconductor layer sequence can be produced in a single epitaxial growth process. The first
- semiconductor layer sequences are advantageously connected to one another monolithically.
- the first is preferably
- the second peak wavelength is preferably between 700 nm and
- the first is N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl
- the first peak wavelength preferably has a wavelength of 660 nm and the second
- Peak wavelength a wavelength of 730 nm. In at least one embodiment, this includes
- the first semiconductor layer sequence has a first active region which generates electromagnetic primary radiation with a first peak wavelength
- the second semiconductor layer sequence has a second active region which has a section which is designed to partially absorb primary electromagnetic radiation and to re-emit it in secondary electromagnetic radiation with a second peak wavelength
- Wavelength range and the second peak wavelength is in an infrared wavelength range, or
- the first peak wavelength is at most 100 nanometers smaller than the second peak wavelength.
- a semiconductor chip has a
- the first and the second semiconductor layer sequence can each emit radiation with a different wavelength range.
- the optoelectronic component thus shows
- Such an optoelectronic component can advantageously be designed to be comparatively compact.
- the first active area is exclusively electrically energized and the second active area is pumped exclusively optically. This means that electromagnetic secondary radiation in the second active region is not generated by electrical operation of the second active region.
- optoelectronic component free of electrical contacts which are provided for energizing the second active region.
- Optical pumping of the second active area preferably enables uniform charge distribution in the second active area. Furthermore, the second
- semiconductor layer sequence are advantageously cooled particularly well, since the first semiconductor layer sequence acts as a heat sink for the second semiconductor layer sequence. Since only the first semiconductor layer sequence is energized, one can be used to operate the optoelectronic component
- the first semiconductor layer sequence is preferred with a phosphide compound semiconductor material and the second
- Radiation exit surface of the semiconductor body roughened.
- the radiation exit area of the semiconductor body comprises one facing away from the first semiconductor layer sequence
- the roughening can advantageously increase the outcoupling of light from the optoelectronic component.
- the section of the second active region comprises two subregions.
- the first sub-area has a first band gap and the second sub-area has a second band gap that is smaller than the first band gap.
- the first sub-area preferably forms an absorption area in which
- the second sub-area preferably forms one
- the first active region can have a further second band gap.
- the further second band gap preferably defines electrical properties of the active region from which the electromagnetic primary radiation is emitted.
- the other is second
- Semiconductor layer sequence have a third band gap, which is larger than the first band gap.
- the third is preferred Band gap chosen so large that little or no
- electromagnetic primary radiation is absorbed by the third band gap.
- a maximum absorption wavelength is specified by means of the first band gap. For example, by choosing the material of the first
- Sub-range a size of the first band gap can be specified. Is the material of the first sub-area
- electromagnetic primary radiation with a comparatively small primary wavelength are absorbed. If, on the other hand, the material of the first sub-area is selected such that a comparatively small first band gap results, then electromagnetic primary radiation, which has a comparatively large primary wavelength, can preferably be absorbed particularly well. Also electromagnetic
- the primary wavelength can be absorbed particularly well.
- an absorption strength is predetermined by means of a thickness of the first sub-region.
- the thickness of the first sub-area is formed by the maximum extension in the stacking direction. The thicker the first sub-area is, the higher it is
- the second band gap is another maximum
- the second sub-area also has a thickness that is preferably smaller is formed as the thickness of the first sub-area.
- the first sub-area has a thickness of 100 nm.
- the second sub-region has a thickness of at least 5 nm and at most 10 nm.
- the second peak wavelength of the secondary radiation is predetermined by means of the second band gap.
- a size of the second band gap is
- the secondary radiation emitted by the second sub-region has one
- Absorption wavelength is at most 50 nm larger than the first peak wavelength of the primary radiation.
- the maximum absorption wavelength is at most 30 nm larger than the first peak wavelength of the primary radiation.
- the material composition of the first sub-area can vary, for example, along the stacking direction.
- a gradient of the first band gap along the stacking direction can thereby be predetermined.
- Such a gradient of the first band gap can advantageously increase the probability that electron hole pairs diffuse into the second sub-region.
- the first band gap narrows towards the second band gap.
- the first band gap from one side of the first sub-region facing away from the second sub-region preferably has one has a comparatively large first band gap, which narrows in the stacking direction.
- Such a first band gap is a gradual confinement of excited electrons in one
- the second active area can, for example, have a plurality of sections
- the two sub-areas preferably have different ones for each section of the plurality of sections
- Absorption wavelength, an absorption strength and / or a second peak wavelength can be specified individually for each section of the plurality of sections by means of the respective two sub-areas.
- the second active area with the plurality of sections is electromagnetic
- Peak wavelengths can be preferred in this case
- the primary radiation and the large number of secondary radiations can mix and form an enveloping emission spectrum.
- the enveloping emission spectrum is, for example, by an emission spectrum
- each Secondary radiation of the plurality of secondary radiations is formed and can preferably approximately have the shape of a rectangular function.
- the primary radiation and the large number of secondary radiations each have a spectral intensity or a spectral luminous flux, which can be represented graphically in the respective emission spectrum as a function of the wavelength l.
- the respective emission spectra can each be represented by a curve in which the wavelength on the x-axis and the spectral intensity on the y-axis
- the respective emission spectra for the primary radiation and the large number of secondary radiations can have a maximum and a half-value width.
- Half-width refers to the curve of a respective emission spectrum, the half-width being the area on the x-axis that corresponds to the two y-values that correspond to half of the respective maximum.
- the distances between the maxima and the associated half-value widths are preferably designed such that the spectral intensity between two maxima is in each case at most 5% less than the maximum spectral intensity.
- Emission spectra of the plurality of secondary radiations preferably overlap to the envelope
- a broadband emitter can advantageously be implemented, its first peak wavelength in a red
- Wavelength range is and the second peak wavelengths are partially in an infrared wavelength range.
- Such a broadband emitter can, for example, in
- Primary radiation has a spectral intensity that is greater than a spectral intensity of the secondary radiation.
- the spectral intensity of the secondary radiation is preferably 20% of the spectral intensity of the primary radiation. Such a comparatively low spectral intensity of the
- Secondary radiation can, for example, by the
- Absorption strength and the absorption wavelength of the second active region can be specified.
- the primary radiation has, for example, the first
- Peak wavelength of 660 nm and the secondary radiation for example, the second peak wavelength of 730 nm.
- the primary radiation and the secondary radiation mix into one
- optoelectronic component emits the mixed radiation.
- the first is N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl-N-(2-aminoethyl)-2-aminoethyl
- the first contact structure is preferably arranged on a main surface of the first semiconductor region facing away from the first active region.
- the first contact structure preferably comprises a metal or is formed from a metal.
- the first contact structure can comprise a first layer and a second layer.
- the first layer is preferably designed for this, in regions with the first
- the second layer is preferably designed to be reflective for the primary radiation and
- the second layer is, for example, a dielectric mirror, a Bragg mirror, a metallic mirror or one
- the second layer preferably has a reflectivity for the primary radiation and the secondary radiation of at least 90%.
- Radiation exit surface of the semiconductor body are coupled out.
- the second layer has a higher reflectivity for the secondary radiation than for the primary radiation.
- the second layer is preferably between the first
- Layer which is arranged on the second layer can preferably also be arranged within the recesses of the second layer and in the regions of the plurality of
- the second contact structure is preferably arranged on a main surface of the second semiconductor region facing away from the first active region.
- the main surface of the second semiconductor region forms the above
- the second semiconductor layer sequence is regionally in the region of the second
- the second contact structure is freely accessible in the area of the opening and can be electrically contactable.
- Semiconductor layer sequence has a recess which completely penetrates the first semiconductor region and the first active region. Furthermore, the recess of the first semiconductor layer sequence penetrates the second
- the second contact structure is preferably arranged in the recess of the first semiconductor layer sequence such that the second contact structure the second semiconductor region
- the first active region and the second contact structure are preferred in FIG.
- Cutout and the first semiconductor region and the second contact structure in the cutout are electrically insulated from one another.
- the first active region is energized with at least one first current pulse or with at least one second current pulse.
- first current pulse or the second current pulse it is possible for the first current pulse or the second current pulse to be repeated many times.
- Primary radiation is particularly well absorbed by the second active area.
- secondary radiation has a particularly high intensity compared to primary radiation.
- electromagnetic secondary radiation has a comparatively low intensity compared to primary radiation.
- Primary wavelength to the secondary wavelength when using the first current pulse compared to when using the second current pulse is, for example, comparatively large if the maximum belonging to the first band gap of the first sub-area of the second active area
- Absorption wavelength is equal to or only slightly larger than the first peak wavelength of the primary radiation.
- Peak wavelength is preferably at most 50 nm, in particular at most 30 nm. In this case it is
- Secondary wavelength can be set in a comparatively large range via the current pulse used for control.
- the first intensity or the second intensity that is applied to the first active region can preferably be in
- the first peak wavelength of the primary radiation generated by the first current pulse differs from the first peak wavelength of the primary radiation generated by the second current pulse by up to 1 nm.
- the generated first peak wavelength of the primary radiation is preferably up to 1 nm smaller than if a second current pulse is applied to the first active area.
- the intensity of the secondary radiation can advantageously be predetermined by changing the applied current pulse.
- control of the first active area described here can be predetermined with that described above
- Material composition of the section or the plurality of sections of the second active region can be combined.
- optoelectronic component is in particular the optoelectronic component described here. That is, all in connection with what is described here
- Optoelectronic component can for example
- Plant growth can be promoted efficiently.
- For example can be red radiation as well as infrared radiation whose
- Peak wavelength is greater than a peak wavelength of red radiation, the plant growth
- the infrared radiation preferably has 20% of the intensity of the red radiation.
- Infrared radiation is called the Emerson effect.
- the red radiation is due to the above
- such a lighting device can advantageously be implemented with only one optoelectronic component that the red radiation and the infrared radiation
- Figure 1 is a schematic sectional view of a
- FIGS. 2 and 3 show a schematic sectional illustration of an optoelectronic component according to an exemplary embodiment
- FIG. 4 shows a schematic band gap diagram according to a
- FIGS 5 and 6 schematic emission spectrum according to an embodiment
- FIGS. 7 and 8 are schematic representations of a method for controlling an optoelectronic component in accordance with one exemplary embodiment.
- FIG. 1 shows a schematic sectional illustration of an optoelectronic component 1 according to one
- the optoelectronic component according to the exemplary embodiment according to FIG. 1 comprises a semiconductor body 2 which has a first semiconductor layer sequence 3 and a second one
- Stack direction are arranged one above the other.
- the first semiconductor layer sequence 3 comprises a first semiconductor region 4 of a first conductivity type and a second semiconductor region 5 of a second, different one
- the first semiconductor layer sequence 3 has a first active region 6 which electromagnetic primary radiation 26 with a first
- the first active region 6 is between the first semiconductor region 4 and the second
- the first active region 6 is formed from a multiple quantum well structure (MQW structure).
- MQW structure multiple quantum well structure
- the second semiconductor layer sequence 7 is arranged on the second semiconductor region 5 of the first semiconductor layer sequence 3.
- the electromagnetic primary radiation 26 from the first semiconductor layer sequence 3 can thus enter the second semiconductor layer sequence 7 particularly well.
- the second semiconductor layer sequence 7 is on one
- the second semiconductor layer sequence 7 has a second active region 9.
- the second active area 9 has a section 9a which is designed to
- the second active region 9 has a multiplicity of sections 9a.
- the second active region 9 is therefore a multiple quantum well structure with a multiplicity of single quantum well structures.
- the second active area 9 is between two
- connection materials 8 arranged.
- the first active area 6 is operated exclusively electrically and the second active area 9 is pumped exclusively optically. That means that electromagnetic
- Secondary radiation 27 is not generated by electrical operation of the second active region 9.
- the first semiconductor layer sequence 3 can be energized by means of a first contact structure 12 and a second contact structure 16.
- the first semiconductor region 4 is electrically conductively connected to the first contact structure 12 and the second semiconductor region 5 to the second contact structure 16.
- the first contact structure 12 comprises a first layer 13 and a second layer 14.
- the first layer and the second layer are on one of the Main surface facing away from the first active region 6 of the first semiconductor region 3.
- the second layer 14 is designed to reflect the primary radiation 26 and the secondary radiation 27 and is arranged between the first semiconductor region 4 and the first layer 13 and preferably has one
- the first layer 13, which is arranged on the second layer 14, is arranged within the recesses 15 of the second layer 14 and is in direct contact with the first semiconductor region 4 in the regions of the plurality of recesses 15.
- the second contact structure 16 is in this case
- Embodiment arranged on a main surface of the second semiconductor region 5 facing away from the first active region 6.
- the main surface of the second semiconductor region 5 forms the radiation passage surface 11 of the first Semiconductor layer sequence 3.
- Semiconductor layer sequence 7 is in regions in the region of the second contact structure 16 up to the first
- the semiconductor layer sequence 3 removed. In this way, an opening 17 to the first semiconductor layer sequence 3 is formed.
- the second contact structure 16 is freely accessible in the region of the opening 17 and can be contacted in an electrically conductive manner.
- FIG. 2 is a schematic representation of an optoelectronic component according to another
- an optoelectronic component 1 is shown in FIG. 2, in which the first semiconductor layer sequence 3 has a recess 18 which completely penetrates the first semiconductor region 4 and the first active region 6.
- the second contact structure 16 is arranged in the recess 18 of the first semiconductor layer sequence 3 such that the second contact structure 16 contacts the second semiconductor region 5 in an electrically conductive manner.
- the first active region 6 and the second contact structure 16 in the recess 18 and the first are preferred
- FIG. 3 shows four different possibilities of how primary radiation 26 or secondary radiation 27 is coupled out during operation of the optoelectronic component. However, the four options are not all options.
- primary radiation 26 can be coupled out of the optoelectronic component 1 as shown in the region B1 without being reflected by the radiation exit surface 10 or being absorbed by the second active region 9.
- primary radiation 26 and secondary radiation 27 can be absorbed by the second layer 14 through mirror reflection losses according to a second possibility.
- the second layer 14 can reflect better for secondary radiation 27 than for
- Primary radiation 26 may be formed.
- Primary radiation 26 emitted from the first active region 6 is initially in the region B3 at the
- Contact structure 12 reflects and is absorbed by the first active region 6. Such absorptions reduce the quantum efficiency of the first active region 6.
- the primary radiation 26 emitted by the first active area 6 is absorbed in the second active area 9 and converted into electromagnetic secondary radiation 27. Since the wavelength of the secondary radiation 27 is greater than the wavelength of the primary radiation 26, it is preferably not activated by the first active radiation
- the secondary radiation 27 is subsequently on the second layer 14 in the direction
- Radiation exit surface 10 is reflected.
- the reabsorption of the secondary radiation 27 from the second active area 9 can also be low and can subsequently be coupled out through the radiation exit surface 10.
- FIG. 4 a schematic band gap diagram of a first band gap 20 and a second band gap 22 according to an exemplary embodiment is shown.
- the second active region 9 comprises one
- Section comprising two sub-areas 19, 21.
- the first sub-region 19 has a first band gap 20 and the second sub-region 21 has a second band gap 22, which is smaller than the first band gap 20.
- Sub-area 19 preferably forms an absorption area for electromagnetic primary radiation 26.
- Sub-region 21 preferably forms an emission region that emits electromagnetic secondary radiation 27, which is represented in FIG. 4 by dashed arrows.
- a maximum is achieved by means of the first band gap, or by means of the size of the first band gap 25
- the first band gap 20 has a gradient, so that the first band gap 20 narrows towards the second band gap 22.
- the first sub-region 19 has a thickness 23 with which an absorption strength of the primary radiation 26 is predetermined.
- a radiation intensity I is plotted in% over a wavelength wL in nanometers.
- the curve shows an emission spectrum El.
- the second active area 9 has ten sections 9a, each two
- the two sub-areas have different material compositions for each section. That is, an absorption wavelength, one
- Absorbance and / or a second peak wavelength can individually for each of the ten sections using the
- the second active region 9 with the ten sections absorbs electromagnetic primary radiation 26 with the first peak wavelength and re-emits ten second ones
- Peak wavelengths the ten second peak wavelengths being different in this case.
- the primary radiation 26 and the ten secondary radiation mix and form the emission spectrum El, which approximately has the shape of a rectangular function.
- Such an optoelectronic component can preferably be used to implement a broadband emitter, the first of which
- Peak wavelength lies in a red wavelength range and its second peak wavelength lies in an infrared
- a further emission spectrum E2 is shown in accordance with FIG.
- the second active area 9 has a single section 9a.
- the resulting emission spectrum E2 has two peaks, the first peak wavelength of the primary radiation 26 and the second peak wavelength
- Secondary radiation 27 correspond. Furthermore, the maximum absorption wavelength and the absorption strength of the primary radiation 26 are predetermined by a suitable choice of the material composition of the second active region 9.
- FIGS. 7 and 8 schematic representations of a method for controlling an optoelectronic component are shown in accordance with one exemplary embodiment.
- the first current pulse S1 and the second current pulse S2 are each shown in a current intensity SI-time T diagram.
- a first current pulse S1 is first applied to the first active area 6, as shown in FIG. The first
- the first current pulse S1 is also repeatedly applied to the first active region 6 at a time interval.
- the first peak wavelength of the primary radiation generated by the first current pulse S1 differs from the first peak wavelength of the primary radiation generated by the second current pulse S2 by up to 1 nm.
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Abstract
Description
Claims
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112019005003.6T DE112019005003B4 (de) | 2018-10-04 | 2019-09-24 | Optoelektronisches bauteil, verfahren zur ansteuerung eines optoelektronischen bauteils und beleuchtungsvorrichtung |
| US17/281,755 US11594659B2 (en) | 2018-10-04 | 2019-09-24 | Optoelectronic component, method for driving an optoelectronic component, and illumination device |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102018124473.8A DE102018124473A1 (de) | 2018-10-04 | 2018-10-04 | Optoelektronisches bauteil, verfahren zur ansteuerung eines optoelektronischen bauteils und beleuchtungsvorrichtung |
| DE102018124473.8 | 2018-10-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2020069920A1 true WO2020069920A1 (de) | 2020-04-09 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP2019/075716 Ceased WO2020069920A1 (de) | 2018-10-04 | 2019-09-24 | Optoelektronisches bauteil, verfahren zur ansteuerung eines optoelektronischen bauteils und beleuchtungsvorrichtung |
Country Status (3)
| Country | Link |
|---|---|
| US (1) | US11594659B2 (de) |
| DE (2) | DE102018124473A1 (de) |
| WO (1) | WO2020069920A1 (de) |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US11716938B2 (en) * | 2019-03-26 | 2023-08-08 | Seoul Viosys Co., Ltd. | Plant cultivation light source and plant cultivation device |
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| US8426843B2 (en) * | 2007-09-28 | 2013-04-23 | Osram Opto Semiconductors Gmbh | Radiation-emitting semiconductor body |
| DE102009020127B4 (de) | 2009-03-25 | 2025-12-31 | OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung | Leuchtdiode |
| DE102009030549A1 (de) | 2009-06-25 | 2010-12-30 | Osram Opto Semiconductors Gmbh | Optisches Projektionsgerät |
| DE102010051286A1 (de) * | 2010-11-12 | 2012-05-16 | Osram Opto Semiconductors Gmbh | Optoelektronischer Halbleiterchip und Verfahren zu dessen Herstellung |
| DE102010052835A1 (de) * | 2010-11-29 | 2012-05-31 | Osram Opto Semiconductors Gmbh | Optoelektronisches Bauelement und Verfahren zu dessen Herstellung |
| DE102014107472A1 (de) | 2014-05-27 | 2015-12-03 | Osram Opto Semiconductors Gmbh | Halbleiterbauelement und Beleuchtungsvorrichtung |
| DE102015105693B4 (de) * | 2015-04-14 | 2021-05-27 | OSRAM Opto Semiconductors Gesellschaft mit beschränkter Haftung | Strahlungsemittierendes Halbleiterbauelement und Verfahren zur Erzeugung von Strahlung unter Verwendung eines strahlungsemittierenden Halbleiterbauelements |
| KR20170075966A (ko) * | 2015-12-24 | 2017-07-04 | 삼성전자주식회사 | 광추출 효율이 개선된 발광소자 패키지 |
| JP6481663B2 (ja) | 2016-06-29 | 2019-03-13 | 日亜化学工業株式会社 | 発光装置及び植物栽培方法 |
| DE102017117504A1 (de) * | 2017-08-02 | 2019-02-07 | Osram Opto Semiconductors Gmbh | Lichtemittierender Halbleiterchip und optoelektronisches Bauteil |
| DE102018107673A1 (de) * | 2018-03-15 | 2019-09-19 | Osram Opto Semiconductors Gmbh | Optoelektronischer Halbleiterchip und Herstellungsverfahren für einen optoelektronischen Halbleiterchip |
-
2018
- 2018-10-04 DE DE102018124473.8A patent/DE102018124473A1/de not_active Withdrawn
-
2019
- 2019-09-24 DE DE112019005003.6T patent/DE112019005003B4/de active Active
- 2019-09-24 US US17/281,755 patent/US11594659B2/en active Active
- 2019-09-24 WO PCT/EP2019/075716 patent/WO2020069920A1/de not_active Ceased
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20020139984A1 (en) * | 2001-01-26 | 2002-10-03 | Kabushiki Kaisha Toshiba | Semiconductor light emitting element |
| DE102004052245A1 (de) * | 2004-06-30 | 2006-02-02 | Osram Opto Semiconductors Gmbh | Strahlungsemittierender Halbleiterchip und strahlungsemittierendes Halbleiterbauelement mit einem derartigen Halbleiterchip |
| US20060267026A1 (en) * | 2005-05-31 | 2006-11-30 | Samsung Electro-Mechanics Co., Ltd. | White light emitting device |
| US20130320299A1 (en) * | 2012-06-02 | 2013-12-05 | Xiaohang Li | Monolithic semiconductor light emitting devices and methods of making the same |
| WO2019141586A1 (de) * | 2018-01-18 | 2019-07-25 | Osram Opto Semiconductors Gmbh | Epitaktisches konversionselement, strahlungsemittierender halbleiterchip und deren verfahren zur herstellung |
Also Published As
| Publication number | Publication date |
|---|---|
| US20210391498A1 (en) | 2021-12-16 |
| US11594659B2 (en) | 2023-02-28 |
| DE102018124473A1 (de) | 2020-04-09 |
| DE112019005003B4 (de) | 2025-11-20 |
| DE112019005003A5 (de) | 2021-06-24 |
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