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Color-adjustable thin-film solar cell for BIPV

A solar cell and thin film technology, applied in circuits, photovoltaic power generation, electrical components, etc., can solve the problems of loss of photoelectric conversion efficiency of cells, increase production steps, increase costs, etc., to ensure overall structure and performance, increase utilization rate, color easy effect

Pending Publication Date: 2020-08-25
(CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, the colored BIPVs that exist in the market all add single-layer or multi-layer colored functional layers inside or outside the thin-film solar cell cover plate, or use chemical coloring methods, which obviously increases the production steps, increases the cost, and loses the battery life. Photoelectric conversion efficiency

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Embodiment 1

[0028] like figure 1 As shown, the present invention provides a color-tunable thin-film solar cell for BIPV,

[0029] Including a glass substrate 1, the top surface of the glass substrate 1 is sequentially laminated with a color functional layer 2, a buffer layer 3, an absorption layer 4, a back contact layer 5 and a protective layer 6; the absorption layer 4 is a CdTe film; the absorption layer 4 The thickness is 1300-2800nm.

[0030] The color functional layer 2 is composed of more than three layers of films to form a composite film layer, and the color functional layer 2 includes one or more of BZO film, AZO film, GZO film, IGZO film, and IZO film; the color function layer of this embodiment The functional layer 2 includes five layers of films, which are the first functional layer 21 , the second functional layer 22 , the third functional layer 23 , the fourth functional layer 24 and the fifth functional layer 25 from bottom to top. The refractive index of the odd-numbere...

Embodiment 2

[0040] The present invention also can have another kind of scheme:

[0041] A color-adjustable thin-film solar cell for BIPV, comprising a glass substrate 1, a color functional layer 2, a buffer layer 3, an absorbing layer 4, a back contact layer 5 and a protective layer 6 are stacked on the top surface of the glass substrate 1 sequentially from bottom to top; The absorption layer 4 is a CdTe thin film; the thickness of the absorption layer 4 is 1300-2800nm.

[0042] The color functional layer 2 is composed of more than three layers of thin films to form a composite film layer, and the color functional layer 2 includes one or more of CTO, ZTO, and ITO thin films;

[0043] The colored functional layer 2 of this embodiment includes five layers of films, which are the first functional layer 21 , the second functional layer 22 , the third functional layer 23 , the fourth functional layer 24 and the fifth functional layer 25 from bottom to top. The refractive index of the odd-numb...

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Abstract

The invention provides a color-adjustable thin-film solar cell for the BIPV. The solar cell comprises a glass substrate, and a color functional layer, a buffer layer, an absorption layer, a back contact layer and a protective layer are sequentially stacked on the top surface of the glass substrate from bottom to top; the absorption layer is a CdTe thin film; the color functional layer is a composite film layer formed by more than three layers of films and comprises one or more than two of a BZO film, an AZO film, a GZO film, an IGZO film and an IZO film, or the color functional layer comprisesone or more than two of a CTO film, a ZTO film and an ITO film; the refractive index of the odd-numbered film layers in the color functional layer is greater than that of the even-numbered film layers; the cell structure itself can carry colors, the colors are easy to adjust, and the overall structure and performance of the thin-film solar cell are guaranteed at the same time.

Description

technical field [0001] The invention relates to the technical field of thin-film solar cells, in particular to a color-adjustable thin-film solar cell for BIPV. Background technique [0002] Building Integrated Photovoltaics (BIPV: Building Integrated Photovoltaics) is a new concept of applying solar power generation: combining building materials on the outer surface of the building maintenance structure to form a combination of photovoltaics and buildings, and photovoltaic power generation provides electricity. [0003] At present, the integration of green and intelligent power generation systems in buildings has become the consensus of all countries and is also the trend of building development. According to the "Building Energy Conservation and Green Building Development Plan", my country's ultra-low energy consumption and near zero energy consumption building projects will reach more than 10 million square meters by 2020. BIPV is a key technical factor to solve the elec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H01L31/055H01L31/0236
CPCH01L31/02366H01L31/055Y02E10/52Y02A30/60
Inventor 马立云姚婷婷甘治平李刚沈洪雪杨扬彭赛奥金克武王天齐时君黄海青程国送
Owner (CNBM) BENGBU DESIGN & RES INST FOR GLASS IND CO LTD
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