KR20230118721A - photosynthesis wavelength transmission type solar light emitting pannel for smart farm - Google Patents

photosynthesis wavelength transmission type solar light emitting pannel for smart farm Download PDF

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KR20230118721A
KR20230118721A KR1020220014526A KR20220014526A KR20230118721A KR 20230118721 A KR20230118721 A KR 20230118721A KR 1020220014526 A KR1020220014526 A KR 1020220014526A KR 20220014526 A KR20220014526 A KR 20220014526A KR 20230118721 A KR20230118721 A KR 20230118721A
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light
wavelength conversion
light scattering
guide plate
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김용갑
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(주)레츠
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
    • H01L31/055—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means where light is absorbed and re-emitted at a different wavelength by the optical element directly associated or integrated with the PV cell, e.g. by using luminescent material, fluorescent concentrators or up-conversion arrangements
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/042—PV modules or arrays of single PV cells
    • H01L31/0445—PV modules or arrays of single PV cells including thin film solar cells, e.g. single thin film a-Si, CIS or CdTe solar cells
    • H01L31/046—PV modules composed of a plurality of thin film solar cells deposited on the same substrate
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01L—SEMICONDUCTOR DEVICES NOT COVERED BY CLASS H10
    • H01L31/00—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof
    • H01L31/04—Semiconductor devices sensitive to infrared radiation, light, electromagnetic radiation of shorter wavelength or corpuscular radiation and specially adapted either for the conversion of the energy of such radiation into electrical energy or for the control of electrical energy by such radiation; Processes or apparatus specially adapted for the manufacture or treatment thereof or of parts thereof; Details thereof adapted as photovoltaic [PV] conversion devices
    • H01L31/054—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means
    • H01L31/0547—Optical elements directly associated or integrated with the PV cell, e.g. light-reflecting means or light-concentrating means comprising light concentrating means of the reflecting type, e.g. parabolic mirrors, concentrators using total internal reflection

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Abstract

본 발명은 광합성 효율저하가 없는 스마트팜용 광합성 파장 투과형 발광태양광 패널에 관한 것으로서, 판형상으로 형성되어 입사된 광을 투과시키는 도광판과, 도광판의 일면에 상호 이격되게 결합된 복수개의 태양전지와, 도광판의 일면상의 태양전지들의 점유영역 이외의 영역에 결합되며 투명수지에 입사된 태양광의 일부를 흡수하여 식물 광합성에 적합한 파장으로 변환하는 파장변환입자 및 입사된 광을 산란시키는 광산란입자가 분산된 광산란 파장변환층을 구비하고, 광산란 파장변환층의 도광판의 일면과 밀접되는 일면 맞은편이 되는 타면에는 산란용 요철이 형성되어 있다. 이러한 광합성 효율저하가 없는 스마트팜용 광합성 파장 투과형 발광태양광 패널에 의하면, 투광용 도광판의 태양전지들의 점유 영역을 벗어나서 진행되는 광의 광산란에 의해 파장변환 및 광전변환 효율을 향상시킬 수 있는 장점을 제공한다.The present invention relates to a photosynthetic wavelength transmission type light emitting solar panel for smart farms without a decrease in photosynthetic efficiency, a light guide plate formed in a plate shape and transmitting incident light, and a plurality of solar cells coupled spaced apart from each other on one surface of the light guide plate, Wavelength converting particles that absorb part of the sunlight incident on the transparent resin and convert it into a wavelength suitable for plant photosynthesis and light scattering particles that scatter the incident light are combined in an area other than the area occupied by the solar cells on one surface of the light guide plate. A wavelength conversion layer is provided, and unevenness for scattering is formed on the other side opposite to one side of the light scattering wavelength conversion layer that is in close contact with one side of the light guide plate. According to the photosynthetic wavelength transmission type light emitting solar panel for smart farms without such a decrease in photosynthetic efficiency, wavelength conversion and photoelectric conversion efficiency can be improved by light scattering of light that goes out of the occupied area of the solar cells of the light guide plate for light transmission Provides an advantage. .

Figure P1020220014526
Figure P1020220014526

Description

광합성 효율저하가 없는 스마트팜용 광합성 파장 투과형 발광태양광 패널{photosynthesis wavelength transmission type solar light emitting pannel for smart farm}Photosynthesis wavelength transmission type solar light emitting panel for smart farm without photosynthetic efficiency degradation

본 발명은 광합성 효율저하가 없는 스마트팜용 광합성 파장 투과형 발광태양광 패널에 관한 것으로서, 상세하게는 태양광의 일부는 투과시켜 작물재배용으로 이용하고 일부는 매입된 태양전지에 의해 전력을 생성할 수 있도록 된 광합성 효율저하가 없는 스마트팜용 광합성 파장 투과형 발광태양광 패널에 관한 것이다.The present invention relates to a photosynthetic wavelength transmission type light emitting solar panel for smart farms without a decrease in photosynthetic efficiency, and in detail, some of the sunlight is transmitted and used for crop cultivation, and some of it is capable of generating power by embedded solar cells It relates to a photosynthetic wavelength transmission type light emitting solar panel for smart farms without a decrease in photosynthetic efficiency.

통상적으로 식물은 빛, 온도, 공기, 물 등 성장에 필요한 요소들이 적절하게 공급 및 유지되어야 정상적으로 성장된다. 이러한 식물의 성장 조건에 대한 계절 변화에 의한 자연적 제약사항을 보완하기 위해 비닐이나 유리 등을 이용한 시설 하우스를 통한 재배방식도 이용되고 있다.In general, plants grow normally only when elements necessary for growth, such as light, temperature, air, and water, are properly supplied and maintained. In order to compensate for the natural constraints caused by seasonal changes in the growth conditions of these plants, a cultivation method through a facility house using vinyl or glass is also used.

최근에는 태양광 발전을 농작물 경작과 접목하려는 방식이 제안되고 있다. 국내 공개특허 제10-2020-0134719호에는 태양광 패널에 의해 형성되는 음영지역으로 광을 공급할 수 있는 광유도장치를 적용한 식물재배시스템이 개시되어 있다.Recently, a method of combining photovoltaic power generation with crop cultivation has been proposed. Korean Patent Publication No. 10-2020-0134719 discloses a plant cultivation system to which a light induction device capable of supplying light to a shaded area formed by a solar panel is applied.

한편, 입사된 태양광의 일부는 식물을 재배하기 위해 투과시키고 일부는 태양전지를 통해 전력으로 변환되게 하기 위한 방식을 적용할 때 제조가 용이하면서도 광이용효율을 향상시킬 수 있는 방안이 꾸준히 요구되고 있다.On the other hand, when applying a method for transmitting some of the incident sunlight to grow plants and converting some of it to electric power through a solar cell, there is a constant demand for a method that can be easily manufactured and improve light utilization efficiency. .

본 발명은 상기와 같은 요구사항을 해결하기 위하여 창안된 것으로서, 투광용 도광판의 태양전지 점유 영역을 벗어나서 진행되는 광의 파장변환 및 광전변환 효율을 향상시킬 수 있는 광합성 효율저하가 없는 스마트팜용 광합성 파장 투과형 발광태양광 패널을 제공하는데 그 목적이 있다.The present invention was devised to solve the above requirements, and is a photosynthetic wavelength transmission type for smart farms without degradation of photosynthetic efficiency that can improve the wavelength conversion and photoelectric conversion efficiency of light that goes beyond the solar cell occupied area of the light guide plate for light transmission. Its purpose is to provide a light emitting solar panel.

상기의 목적을 달성하기 위하여 본 발명에 따른 광합성 효율저하가 없는 스마트팜용 광합성 파장 투과형 발광태양광 패널은 판형상으로 형성되어 입사된 광을 투과시키는 도광판과; 상기 도광판의 일면에 상호 이격되게 결합된 복수개의 태양전지와; 상기 도광판의 일면상의 상기 태양전지들의 점유영역 이외의 영역에 결합되며 투명수지에 입사된 태양광의 일부를 흡수하여 식물 광합성에 적합한 파장으로 변환하는 파장변환입자 및 입사된 광을 산란시키는 광산란입자가 분산된 광산란 파장변환층;을 구비하고, 상기 광산란 파장변환층의 상기 도광판의 일면과 밀접되는 일면 맞은편이 되는 타면에는 산란용 요철이 형성된다.In order to achieve the above object, a photosynthetic wavelength transmission type luminescent solar panel for smart farms without a reduction in photosynthetic efficiency according to the present invention includes a light guide plate formed in a plate shape and transmitting incident light; a plurality of solar cells coupled to one surface of the light guide plate to be spaced apart from each other; Wavelength conversion particles that are coupled to an area other than the occupied area of the solar cells on one surface of the light guide plate and absorb a part of the sunlight incident on the transparent resin and convert it into a wavelength suitable for plant photosynthesis and light scattering particles that scatter the incident light are dispersed. and a light scattering wavelength conversion layer, and a surface of the light scattering wavelength conversion layer that is in close contact with one surface of the light guide plate has irregularities for scattering formed on the opposite surface.

바람직하게는 상기 광산란입자는 입경이 0.5 내지 5㎛이며, TiO2, ZrO2 중 적어도 하나의 소재로 형성된 것을 적용한다.Preferably, the light scattering particles have a particle size of 0.5 to 5 μm, and are formed of at least one of TiO2 and ZrO2.

또한, 본 발명의 일 측면에 따르면, 상기 광산란 파장변환층의 상기 요철이 형성된 타면 상에 적층된 보호층과; 적층된 상기 도광판, 상기 광산란 파장변환층 및 상기 보호층의 외부로 노출된 측면을 따라 형성되어 입사된 광을 반사하는 반사층;을 더 구비하고, 상기 광산란 파장변환층은 에틸렌비닐아세테이트(EVA) 공중합체 수지에 파장변환입자 및 광산란입자가 분산되어 있고, 상기 광산란입자는 상기 에틸렌비닐아세테이트(EVA) 공중합체 수지 100중량부에 대해 0.05 내지 0.1중량부로 첨가된다.In addition, according to one aspect of the present invention, a protective layer laminated on the other surface on which the unevenness is formed of the light scattering wavelength conversion layer; and a reflective layer formed along an exposed side surface of the laminated light guide plate, the light scattering wavelength conversion layer, and the protective layer to reflect incident light, wherein the light scattering wavelength conversion layer is made of ethylene vinyl acetate (EVA) air Wavelength converting particles and light scattering particles are dispersed in the composite resin, and the light scattering particles are added in an amount of 0.05 to 0.1 parts by weight based on 100 parts by weight of the ethylene vinyl acetate (EVA) copolymer resin.

상기 파장변환입자는 Perylene red(Lumogen red 305), R-Phycoerythrin, R-Phycocyanin, CaAlSiN3:Eu(CASN), K2TiF6:Mn(KTF), CaMgSi2O6:Eu, BaMgAl10O17:Eu(BAM), (Sr,Mg)2SiO4:Eu (HEBK63N-D1). NaYF4:Er, Yb 중 적어도 하나를 포함할 수 있다.The wavelength conversion particles are Perylene red (Lumogen red 305), R-Phycoerythrin, R-Phycocyanin, CaAlSiN3: Eu (CASN), K2TiF6: Mn (KTF), CaMgSi2O6: Eu, BaMgAl10O17: Eu (BAM), (Sr, Mg )2SiO4:Eu (HEBK63N-D1). NaYF4: It may include at least one of Er and Yb.

본 발명에 따른 광합성 효율저하가 없는 스마트팜용 광합성 파장 투과형 발광태양광 패널에 의하면, 투광용 도광판의 태양전지들의 점유 영역을 벗어나서 진행되는 광의 광산란에 의해 파장변환 및 광전변환 효율을 향상시킬 수 있는 장점을 제공한다.According to the photosynthetic wavelength transmission type light emitting solar panel for smart farms without a decrease in photosynthetic efficiency according to the present invention, the wavelength conversion and photoelectric conversion efficiency can be improved by light scattering of light that goes out of the occupied area of the solar cells of the light guide plate for light transmission provides

도 1은 본 발명에 따른 광합성 효율저하가 없는 스마트팜용 광합성 파장 투과형 발광태양광 패널을 개략적으로 나타내 보인 단면도이다.1 is a cross-sectional view schematically showing a photosynthetic wavelength transmission-type light emitting solar panel for smart farms without photosynthetic efficiency degradation according to the present invention.

이하, 첨부된 도면을 참조하면서 본 발명의 바람직한 실시예에 따른 광합성 효율저하가 없는 스마트팜용 광합성 파장 투과형 발광태양광 패널을 더욱 상세하게 설명한다.Hereinafter, a photosynthetic wavelength transmission-type light emitting solar panel for smart farms without a decrease in photosynthetic efficiency according to a preferred embodiment of the present invention will be described in more detail with reference to the accompanying drawings.

도 1은 본 발명에 따른 광합성 효율저하가 없는 스마트팜용 광합성 파장 투과형 발광태양광 패널을 개략적으로 나타내 보인 단면도이다.1 is a cross-sectional view schematically showing a photosynthetic wavelength transmission-type light emitting solar panel for smart farms without photosynthetic efficiency degradation according to the present invention.

도 1을 참조하면, 본 발명에 따른 광합성 효율저하가 없는 스마트팜용 광합성 파장 투과형 발광태양광 패널(100)은 도광판(110), 태양전지(120), 광산란 파장변환층(130), 보호층(140), 반사층(150)을 구비한다.Referring to FIG. 1, the photosynthetic wavelength transmission type light emitting solar panel 100 for smart farms without photosynthetic efficiency degradation according to the present invention includes a light guide plate 110, a solar cell 120, a light scattering wavelength conversion layer 130, a protective layer ( 140), and a reflective layer 150.

도광판(110)은 판형상으로 형성되어 입사된 광을 투과시키며 베이스기판으로서의 기능을 한다. 도광판(110)은 두께가 5mm이하이면서 가시광선 대역에서 투광율이 90% 이상이고, 굴절률이 1.6~1.0 이고, 녹는 점이 110℃ 이상인 수지로 형성된 것을 적용한다. 도광판(110)은 폴리카보네이트(PC), 아크릴수지 또는 PMMA( polymethyl methacrylate) 중 어느 하나의 소재로 형성된 것을 적용한다.The light guide plate 110 is formed in a plate shape, transmits incident light, and functions as a base substrate. The light guide plate 110 is formed of a resin having a thickness of 5 mm or less, a light transmittance of 90% or more in the visible light range, a refractive index of 1.6 to 1.0, and a melting point of 110° C. or more. The light guide plate 110 is formed of any one of polycarbonate (PC), acrylic resin, and polymethyl methacrylate (PMMA).

태양전지(120)들은 입사된 광을 전기에너지로 변환한다. 태양전지(120)들은 도광판(110)의 일면의 전체 영역 중 일부를 점유하도록 도광판(110)의 일면에 상호 이격되게 복수개가 접합되어 있다.The solar cells 120 convert incident light into electrical energy. A plurality of solar cells 120 are spaced apart from each other and bonded to one surface of the light guide plate 110 so as to occupy a part of the entire area of one surface of the light guide plate 110 .

광산란 파장 변환층(130)은 도광판(110)의 일면 상의 태양전지(120)들의 점유영역 이외의 영역에 일면이 태양전지(120)와 나란하게 결합되며 투명수지에 입사된 태양광의 일부를 흡수하여 식물 광합성에 적합한 파장으로 변환하는 파장변환입자(132) 및 입사된 광을 산란시키는 광산란입자(134)가 분산되어 있다.The light-scattering wavelength conversion layer 130 is coupled to one surface of the light guide plate 110 in parallel with the solar cells 120 in an area other than the occupied area of the solar cells 120 and absorbs a part of sunlight incident on the transparent resin. Wavelength converting particles 132 that convert wavelengths suitable for plant photosynthesis and light scattering particles 134 that scatter incident light are dispersed.

광산란 파장 변환층(130)은 100℃ 이하에서 녹는 투명수지에 파장변환입자(132) 및 광산란입자(134)가 분산된 구조로 되어 있다.The light scattering wavelength conversion layer 130 has a structure in which wavelength conversion particles 132 and light scattering particles 134 are dispersed in a transparent resin that melts at 100° C. or less.

광산란 파장 변환층(130)에 적용되는 광산란입자(134)는 입경이 0.5 내지 5㎛인 것을 적용한다. 광산란입자(134)의 입경이 0.5㎛ 미만이면 과도한 광산란손실이 발생할 수 있고, 5㎛를 초과하면 광산란량이 작아서 광산란 효과를 충분히 얻기 어렵다. 광산란 입자(134)는 고굴절율 예를 들면 굴절율 1.6을 초과하는 소재를 적용한다. 바람직하게는 광산란 입자(134)는 TiO2, ZrO2 중 적어도 하나의 소재가 적용된다.The light scattering particles 134 applied to the light scattering wavelength conversion layer 130 have a particle diameter of 0.5 to 5 μm. If the particle diameter of the light scattering particles 134 is less than 0.5 μm, excessive light scattering loss may occur, and if it exceeds 5 μm, the light scattering amount is small and it is difficult to obtain a sufficient light scattering effect. For the light scattering particles 134, a material having a high refractive index, for example, a refractive index exceeding 1.6 is applied. Preferably, at least one of TiO 2 and ZrO 2 is applied to the light scattering particles 134 .

이러한 광산란 입자(134)는 입사된 광을 산란시켜 도광판(110) 방향으로 진행하여 도광판(110)의 다른면에 반사/회귀하여 다시 하부로 진행하는 과정에서 태양전지(120)로 흡수됨으로써 태양전지(120)의 크기를 확장하지 않으면서도 광전변환효율을 향상시키는데 기여한다. These light-scattering particles 134 scatter the incident light, travel in the direction of the light guide plate 110, reflect/return to the other surface of the light guide plate 110, and are absorbed by the solar cell 120 in the process of proceeding downward again. It contributes to improving photoelectric conversion efficiency without enlarging the size of (120).

광산란 파장변환층(130)에 적용되는 투명수지는 저온 융점 EVA(에틸렌비닐아세테이트) 공중합체 수지가 적용될 수 있다. 이 경우 광산란 파장변환층(130)은 에틸렌비닐아세테이트(EVA) 공중합체 수지 100중량부에 대해 광산란입자(134)는 0.05 내지 0.1중량부로 첨가된다. 여기서, 에틸렌비닐아세테이트(EVA) 공중합체 수지 100중량부에 대해 광산란입자(134)의 첨가량이 0.05 중량부 미만이면 광산란 효과가 미미하고, 0.1중량부를 초과하면 광산란 손실이 많아지고 필름의 유연성이 떨어진다.The transparent resin applied to the light scattering wavelength conversion layer 130 may be a low melting point EVA (ethylene vinyl acetate) copolymer resin. In this case, the light scattering wavelength conversion layer 130 includes 0.05 to 0.1 parts by weight of the light scattering particles 134 based on 100 parts by weight of the ethylene vinyl acetate (EVA) copolymer resin. Here, if the amount of the light scattering particles 134 added to 100 parts by weight of the ethylene vinyl acetate (EVA) copolymer resin is less than 0.05 parts by weight, the light scattering effect is insignificant, and if it exceeds 0.1 parts by weight, the light scattering loss increases and the flexibility of the film deteriorates. .

또한, 파장변환입자(132)는 청색광 또는 녹색광에 여기되어 적색광 또는 적외선을 발광하는 염료 예를 들면, Perylene red(Lumogen red 305), R-Phycoerythrin, R-Phycocyanin 중 적어도 어느 하나가 적용될 수 있다. In addition, the wavelength conversion particle 132 is excited by blue light or green light and emits red light or infrared light, for example, at least one of Perylene red (Lumogen red 305), R-Phycoerythrin, R-Phycocyanin It can be applied.

또한, 파장변환입자(132)는 청색광 또는 녹색광에 여기되어 적색광 또는 적외선을 발광하는 형광체인 CaAlSiN3:Eu(CASN), K2TiF6:Mn(KTF) 또는 자외선 여기 청색광 발광소재인 CaMgSi2O6:Eu, BaMgAl10O17:Eu(BAM), (Sr,Mg)2SiO4:Eu (HEBK63N-D1) 또는 적외선 여기 청색광 발광 소재인 NaYF4:Er, Yb 중 적어도 하나를 포함할 수 있다.In addition, the wavelength conversion particle 132 is CaAlSiN 3 : Eu (CASN), K 2 TiF 6 : Mn (KTF), which is a phosphor that emits red light or infrared light when excited by blue light or green light, or CaMgSi 2 O, which is an ultraviolet-excited blue light emitting material. 6 :Eu, BaMgAl10O17:Eu(BAM), (Sr,Mg) 2 SiO 4 :Eu (HEBK63N-D1) or at least one of NaYF 4 :Er, Yb, which is an infrared excitation blue light emitting material.

이러한 광산란 파장변환층(130)에서 에틸렌비닐아세테이트(EVA) 공중합체 수지 100중량부에 대해 파장변환입자(132)는 0.1 내지 0.3중량부로 첨가된다. 바람직하게는 광산란 파장변환층(130)의 두께가 200㎛로 적용되는 경우 에틸렌비닐아세테이트(EVA) 공중합체 수지 100중량부에 대해 파장변환입자(132)는 0.2중량부로 첨가된다. In the light scattering wavelength conversion layer 130, the wavelength conversion particles 132 are added in an amount of 0.1 to 0.3 parts by weight based on 100 parts by weight of the ethylene vinyl acetate (EVA) copolymer resin. Preferably, when the thickness of the light scattering wavelength conversion layer 130 is 200 μm, 0.2 parts by weight of the wavelength conversion particles 132 is added to 100 parts by weight of the ethylene vinyl acetate (EVA) copolymer resin.

광산란 파장변환층(130)의 도광판(110)의 일면과 밀접되는 일면 맞은편이 되는 타면에는 산란용 요철(137)이 형성되어 있다. 요철(137)은 입사된 광을 산란에 의해 확산시켜 식물 재배 가능영역을 확대시킬 수 있다.Concavo-convex 137 for scattering is formed on one surface of the light scattering wavelength conversion layer 130 that is in close contact with one surface of the light guide plate 110 and on the other surface opposite to one surface. The irregularities 137 can diffuse incident light by scattering to expand a plant cultivation area.

보호층(140)은 광산란 파장변환층(130)의 요철(137)이 형성된 타면에 적층되어 광산란 파장변환층(130)과 태양전지(120)를 물리적 충격으로부터 보호할 수 있도록 적용된 층이다. 보호층(140)은 전기적 절연기능과 광투과 효율이 좋은 소재로 형성된다. 바람직하게는 보호층(140)은 광산란 파장변환층(130) 아래에 EVA공중합체 수지로 된 제1보호층과, 제1보호층 아래에 폴리카보네이트(PC)수지로 형성된 제2보호층을 갖는 구조로 형성된다.The protective layer 140 is a layer applied to the other surface on which the irregularities 137 of the light scattering wavelength conversion layer 130 are formed to protect the light scattering wavelength conversion layer 130 and the solar cell 120 from physical impact. The protective layer 140 is formed of a material with good electrical insulating function and light transmission efficiency. Preferably, the protective layer 140 has a first protective layer made of EVA copolymer resin under the light scattering wavelength conversion layer 130 and a second protective layer made of polycarbonate (PC) resin under the first protective layer. formed into a structure

반사층(150)은 순차적으로 적층된 도광판(110), 광산란 파장변환층(130) 및 보호층(140)의 외부로 노출된 네 개의 측면을 따라 형성되어 입사된 광을 반사한다. 반사층(150)은 가시광선 대역에서의 반사율이 90% 이상이고, 300 내지 1200nm 대역에서 80% 이상인 소재로 형성되는 것이 바람직하다. 반사층(150)은 (Ag) 또는 알루미늄으로 형성될 수 있다.The reflective layer 150 is formed along four externally exposed side surfaces of the sequentially stacked light guide plate 110 , the light scattering wavelength conversion layer 130 , and the protective layer 140 to reflect incident light. The reflective layer 150 is preferably formed of a material having a reflectance of 90% or more in the visible light band and 80% or more in the 300 to 1200 nm band. The reflective layer 150 may be formed of (Ag) or aluminum.

이하에서는 이러한 스마트팜용 광합성 파장 투과형 발광태양광 패널(100)의 제조과정을 설명한다. Hereinafter, the manufacturing process of the photosynthetic wavelength transmission light emitting solar panel 100 for smart farms will be described.

먼저, 광산란 파장변환층(130)용 필름을 제작한다.First, a film for the light scattering wavelength conversion layer 130 is manufactured.

광산란 파장변환층(130)용 필름은 용제에 적색 발광 염료(perylene red [Lumogen red 305])와 같이 앞서 설명된 파장변환입자를 녹이고, 광산란입자를 분산시킨 후, 태양전지용 저온 융점 EVA공중합체수지에 녹여서 필름 제작기를 통해 필름형태로 가공하고 건조하여 용제가 제거된 필름을 제작한다. 이후 광산란 파장변환층(130)용 필름에 요철(137)을 형성한다. The film for the light scattering wavelength conversion layer 130 is obtained by dissolving the previously described wavelength conversion particles such as perylene red [Lumogen red 305] in a solvent, dispersing the light scattering particles, and then forming a low melting point EVA copolymer resin for solar cells. It is melted in and processed into a film form through a film maker, and dried to produce a film from which the solvent is removed. Thereafter, irregularities 137 are formed on the film for the light scattering wavelength conversion layer 130 .

다음으로 도광판(110) 위에 태양전지(120)들 및 필름형태로 된 광산란 파장변환층(130)들을 앞서 도 1에 도시된 형태로 접합하고, 그 위에 보호층(140)을 접착제로 접합한다. 이후 측면에 접착제에 의해 접합이 가능한 광반사필름을 접합하여 반사층(150)을 형성한다.Next, the solar cells 120 and the light scattering wavelength conversion layer 130 in the form of a film are bonded on the light guide plate 110 in the form shown in FIG. 1, and the protective layer 140 is bonded thereon with an adhesive. Then, the reflective layer 150 is formed by bonding a light reflective film that can be bonded with an adhesive to the side surface.

이러한 스마트팜용 광합성파장 투과형 발광태양광패널(100)은 패널 하부로는 태양광 스펙트럼의 대부분을 통과시켜 하부에 존재하는 식물 재배에 이용하고, 패널 일부 영역에 존재하는 태양전지(120)들을 통해서 전력 생산을 하며, 추가로 광산란 파장변환층(130) 내에 분산된 파장변환입자(132)는 광합성에 주효한 적색광을 발생시켜 하부로 방출하여 식물의 광합성을 향상시키며, 광산란입자(134)는 입사된 태양광을 산란시켜 다양한 방향성을 갖게 함으로써 일부가 태양전지(120)들에 입사되어 광전변환효율을 향상시키고 파장변환입자로의 흡수도 향상시켜 적생광 생성효율도 증가시킨다.The photosynthetic wavelength transmission type light emitting solar panel 100 for smart farms passes most of the solar spectrum through the lower part of the panel to be used for plant cultivation, and power is generated through the solar cells 120 present in some areas of the panel. In addition, the wavelength conversion particles 132 dispersed in the light scattering wavelength conversion layer 130 generate red light effective for photosynthesis and emit it downward to improve the photosynthesis of plants, and the light scattering particles 134 are incident By scattering sunlight to have various directions, some of it is incident on the solar cells 120 to improve photoelectric conversion efficiency and improve absorption into wavelength conversion particles, thereby increasing red light generation efficiency.

이상에서 설명된 광합성 효율저하가 없는 스마트팜용 광합성 파장 투과형 발광태양광 패널에 의하면, 투광용 도광판의 태양전지 점유 영역을 벗어나서 진행되는 광의 광산란에 의해 파장변환 및 광전변환 효율을 향상시킬 수 있는 장점을 제공한다.According to the above-described photosynthetic wavelength transmission type light emitting solar panel for smart farms without a decrease in photosynthetic efficiency, the advantage of improving wavelength conversion and photoelectric conversion efficiency by light scattering of light proceeding out of the solar cell occupied area of the light guide plate for light transmission to provide.

110: 도광판 120: 태양전지
130: 광산란 파장변환층 140: 보호층
150: 반사층110: light guide plate 120: solar cell
130: light scattering wavelength conversion layer 140: protective layer
150: reflective layer

Claims (4)

판형상으로 형성되어 입사된 광을 투과시키는 도광판과;
상기 도광판의 일면에 상호 이격되게 결합된 복수개의 태양전지와;
상기 도광판의 일면상의 상기 태양전지들의 점유영역 이외의 영역에 결합되며 투명수지에 입사된 태양광의 일부를 흡수하여 식물 광합성에 적합한 파장으로 변환하는 파장변환입자 및 입사된 광을 산란시키는 광산란입자가 분산된 광산란 파장변환층;을 구비하고,
상기 광산란 파장변환층의 상기 도광판의 일면과 밀접되는 일면 맞은편이 되는 타면에는 산란용 요철이 형성된 것을 특징으로 하는 스마트팜용 광합성 파장 투과형 발광태양광 패널.a light guide plate formed in a plate shape and transmitting incident light;
a plurality of solar cells coupled to one surface of the light guide plate to be spaced apart from each other;
Wavelength conversion particles that are coupled to an area other than the occupied area of the solar cells on one surface of the light guide plate and absorb a part of the sunlight incident on the transparent resin and convert it into a wavelength suitable for plant photosynthesis and light scattering particles that scatter the incident light are dispersed. A light scattering wavelength conversion layer;
Photosynthetic wavelength transmission type light emitting solar panel for smart farm, characterized in that the scattering irregularities are formed on the other side opposite to one side of the light scattering wavelength conversion layer that is in close proximity to one side of the light guide plate. 제1항에 있어서, 상기 광산란입자는 입경이 0.5 내지 5㎛이며, TiO2, ZrO2 중 적어도 하나의 소재로 형성된 것을 특징으로 하는 스마트팜용 광합성 파장 투과형 발광태양광 패널.According to claim 1, The light scattering particles have a particle size of 0.5 to 5㎛, TiO2, ZrO2 Photosynthetic wavelength transmission type light emitting solar panel for smart farms, characterized in that formed from at least one material. 제1항에 있어서, 상기 광산란 파장변환층의 상기 요철이 형성된 타면 상에 적층된 보호층과;
적층된 상기 도광판, 상기 광산란 파장변환층 및 상기 보호층의 외부로 노출된 측면을 따라 형성되어 입사된 광을 반사하는 반사층;을 더 구비하고,
상기 광산란 파장변환층은 에틸렌비닐아세테이트(EVA) 공중합체 수지에 파장변환입자 및 광산란입자가 분산되어 있고, 상기 광산란입자는 상기 에틸렌비닐아세테이트(EVA) 공중합체 수지 100중량부에 대해 0.05 내지 0.1중량부로 첨가된 것을 특징으로 하는 스마트팜용 광합성 파장 투과형 발광태양광 패널.According to claim 1, A protective layer laminated on the other surface formed with the unevenness of the light scattering wavelength conversion layer;
A reflective layer formed along the exposed side surfaces of the stacked light guide plates, the light scattering wavelength conversion layer, and the protective layer to reflect incident light;
The light scattering wavelength conversion layer has wavelength conversion particles and light scattering particles dispersed in an ethylene vinyl acetate (EVA) copolymer resin, and the light scattering particles are 0.05 to 0.1 weight based on 100 parts by weight of the ethylene vinyl acetate (EVA) copolymer resin Photosynthetic wavelength transmission-type light-emitting solar panel for smart farms, characterized in that added as a part. 제3항에 있어서, 상기 파장변환입자는 Perylene red(Lumogen red 305), R-Phycoerythrin, R-Phycocyanin, CaAlSiN3:Eu(CASN), K2TiF6:Mn(KTF), CaMgSi2O6:Eu, BaMgAl10O17:Eu(BAM), (Sr,Mg)2SiO4:Eu (HEBK63N-D1). NaYF4:Er, Yb 중 적어도 하나를 포함하는 것을 특징으로 하는 스마트팜용 광합성 파장 투과형 발광태양광 패널.The method of claim 3, wherein the wavelength conversion particles are Perylene red (Lumogen red 305), R-Phycoerythrin, R-Phycocyanin, CaAlSiN3: Eu (CASN), K2TiF6: Mn (KTF), CaMgSi2O6: Eu, BaMgAl10O17: Eu (BAM) ), (Sr,Mg)2SiO4:Eu (HEBK63N-D1). NaYF4: Photosynthetic wavelength transmission light emitting solar panel for smart farms, characterized in that it comprises at least one of Er, Yb.
KR1020220014526A 2022-02-04 2022-02-04 photosynthesis wavelength transmission type solar light emitting pannel for smart farm KR20230118721A (en)

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