KR-102961799-B1 - PEROVSKITE LUMINESCENT SOLAR CONCENTRATOR INCORPORATING PEROVSKITE SOLAR CELL AND BUILDING-INTEGRATED PHOTOVOLTAICS MODULE COMPRISING THEM

Abstract

The present invention relates to a perovskite photovoltaic collector combined with perovskite solar cells and a building-integrated photovoltaic module comprising the same. The perovskite photovoltaic collector, the perovskite solar cells, and the building-integrated photovoltaic module comprising the same have improved transparency, enhanced luminous efficiency and power conversion efficiency, and strengthened stability.

Inventors

• 박민우
• 오승주

Assignees

• 숙명여자대학교산학협력단

Dates

Publication Date

20260512

Application Date

20241024

Claims (20)

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12. A perovskite luminescent solar concentrator (PeLSC) containing cesium lead halide ( CsPbX₃ ); A plurality of connected perovskite solar cells (PSCs) arranged along the side of the above-mentioned perovskite photovoltaic collector; and It includes one or more connecting electrodes that connect the plurality of perovskite solar cells in series, The above connecting electrode comprises a silver (Ag) wire; a conductive liquid alloy; and an adhesive, and The above conductive liquid alloy is a liquid alloy of gallium (Ga) and indium (In). Building-integrated photovoltaics (BIPV) module.
13. In claim 12, Each of the above-mentioned solar cells has an anisotropic shape with different horizontal and vertical lengths, The plurality of solar cells mentioned above are arranged along the longer direction between the horizontal and vertical directions. Building-integrated photovoltaic module.
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16. In claim 12, The above adhesive is a cross-linked silicone-based adhesive. Building-integrated photovoltaic module.
17. In claim 12, Each of the above perovskite solar cells is, First electrode layer; Perovskite layer; Second electrode layer; and It comprises one or more intermediate layers disposed between the first electrode and the perovskite layer and/or between the second electrode and the perovskite layer, wherein The above intermediate layer is a hole injection layer, a hole transport layer, an electron injection layer, or an electron transport layer. Building-integrated photovoltaic module.
18. In claim 17, Each of the above perovskite solar cells is, The perovskite layer and the second electrode layer are laminated only on a part of the first electrode layer, and a connecting metal layer is laminated on the remaining part, The above connecting electrode is arranged to connect the second electrode layer to the connecting metal layer of the adjacent perovskite solar cell. Building-integrated photovoltaic module.
19. In claim 18, The second electrode layer and the connecting metal layer above include gold (Au). Building-integrated photovoltaic module.
20. In claim 12, The above cesium lead halide is doped with manganese (Mn). Building-integrated photovoltaic module.

Description

Perovskite solar concentrator combined with perovskite solar cells and building-integrated photovoltaic module comprising them The present invention relates to a perovskite photovoltaic collector combined with perovskite solar cells and a building-integrated photovoltaic module including the same. Specifically, the invention relates to a perovskite photovoltaic collector, a perovskite solar cell, and a building-integrated photovoltaic module including the same, wherein transparency is improved, luminous efficiency and power conversion efficiency are enhanced, and stability is strengthened. The demand for new nanostructures in solar energy conversion platforms continues to increase in order to expand their application range and boost electricity production. Lead halide perovskite nanocrystals (PeNCs) have demonstrated great potential and feasibility in the emerging optoelectronics and photovoltaic industries. In particular, due to their excellent luminescence properties and tunable light absorption and emission bands, PeNCs are promising materials as phosphors for luminescent solar concentrators (LSCs). LSCs act as light sources for solar panels by distributing photoluminescence (PL) along the edges of a transparent substrate. This enables low-cost electricity production connected to self-power systems both indoors and outdoors while maintaining the building's exterior, ultimately contributing to the efficient design of building-integrated photovoltaics (BIPV) systems. LSCs containing PeNCs (PeLSCs) exhibit superior performance compared to conventional quantum dot (QD)-based LSCs. In particular, the environmental stability and PL quantum yields (PLQY) of inorganic CsPbX3 NCs (X = Cl, Br, I) were significantly improved compared to organic-inorganic hybrid PeNCs. Additionally, solution-based methods such as spin coating, slot die coating, 3D printing, inkjet printing, and electrospinning were utilized to produce large-area, uniform emissive layers on windows, achieving impressive optical efficiencies of over 3%. However, the severe problem of PL reabsorption between adjacent nanocrystals remains a challenge to be addressed in the development of PeLSCs. This reabsorption causes a significant decrease in photon collection efficiency at the edges due to the broad spectral overlap between light absorption and PL emission ranging from the visible to near-infrared (NIR) regions. To resolve this, large Stokes shifts can be achieved by modifying inorganic and carbon-based quantum dots into core-shell structures or through ligand engineering. Consequently, PL propagation is extended, allowing the optical efficiency of the LSC to be maintained even when the geometric factor (G) increases significantly. Silicon solar cells are used in most PeLSC research because they allow for the simple characterization of LSC performance. Accordingly, the present invention proposes chemical doping of CsPbCl₃NC to suppress PL reabsorption in PeLSCs. While pure CsPbCl₃NCs are known to exhibit spectral overlap during light absorption and PL emission at 300–400 nm, Mn and Yb-doped CsPbCl₃NCs exhibit strong dual PL emission at 618 nm and 985 nm, respectively. This large Stokes shift can improve the optical transparency and efficiency of LSCs and enables the design of PeLSCs without PL reabsorption. Therefore, it is necessary to design all PeLSC/photovoltaic (PV) windows to expand the applicability of PeLSCs and perovskite solar cells (PSCs) in next-generation BIPV systems. Considering the broad visible light absorption spectrum of perovskite solar absorbers, PL emitted from PeLSCs can be efficiently utilized. In addition, PSCs with high power conversion efficiency (PCE) must be able to generate high voltage and current that surpass silicon solar cells. FIG. 1 is a structural diagram of a building-integrated photovoltaics (BIPV) module according to one embodiment of the present invention. Figure 2 compares the difference in absorption and emission wavelengths between a building-integrated photovoltaic module according to one embodiment of the present invention and a conventional building-integrated photovoltaic module. Figure 3 shows TEM images of PeLSC prepared according to an experimental example of the present invention. Figure 4 is an XRD pattern of a PeLSC prepared according to an experimental example of the present invention. Figure 5 shows a photographic image, etc., of a PeLSC manufactured according to an experimental example of the present invention under illumination. Figure 6 shows the structure of a perovskite solar cell (PSC) manufactured according to an experimental example of the present invention. FIG. 7 is a flowchart illustrating a method for manufacturing a perovskite solar cell according to one embodiment of the present invention. Figure 8 shows a photograph of an LSC window combined with a PSC manufactured according to an experimental example of the present invention. Figure 9 shows the UV-visible light absorption and PL