CN220474637U - Thin film solar cell module - Google Patents

Abstract

The utility model discloses a thin film solar cell module, which comprises a thin film solar cell body and low-emissivity glass. The thin film solar cell body has one side of the cell thin film as a backlight side and the other side as a light-facing side. The low-emissivity glass is arranged on the light-facing side of the thin-film solar cell, and the low-emissivity glass and the thin-film solar cell body are arranged at intervals to form a hollow layer. From this, external thermal radiation and ultraviolet ray can be blocked by low radiation glass to can play thermal-insulated effect of separating ultraviolet ray to the film solar cell body, avoid the film solar cell body to lead to ageing or temperature rising to appear because of receiving external thermal radiation and ultraviolet ray's influence, the setting of cavity layer is playing the effect of insulating against heat in the while, also can play certain thermal-insulated effect, from this can be better protect the film solar cell body, extension film solar cell's life.

Description

Thin film solar cell module

Technical Field

The utility model relates to the technical field of photovoltaic buildings, in particular to a thin film solar cell module.

Background

The Building Integrated Photovoltaic (BIPV) technology refers to a technology of integrating a photovoltaic product onto a building, wherein a thin film solar cell module is a photovoltaic product commonly used in the field of building integrated photovoltaic, and an existing thin film solar cell module generally includes a thin film solar cell body and low-emissivity glass disposed on a backlight side of the thin film solar cell body with a hollow structure formed therebetween. Therefore, external heat radiation and heat radiation generated by the thin film solar cell body in the using process can be blocked by the low-emissivity glass, so that the heat radiation cannot enter a room, and the thin film solar cell module has a heat insulation effect. In addition, the arrangement of the hollow structure can also increase the sound insulation effect of the whole thin film solar cell module.

However, in the use process of the thin film solar cell module, the thin film solar cell body is easy to age due to the irradiation of external ultraviolet rays, and in addition, the use of the thin film solar cell body is also easy to be influenced by external high temperature, so that the service life of the thin film solar cell module is shortened.

Disclosure of Invention

The present utility model aims to solve at least one of the technical problems existing in the prior art. Therefore, the utility model provides the thin-film solar cell module, which can reduce the adverse effect of external infrared rays and ultraviolet rays on the thin-film solar cell body and prolong the service life of the thin-film solar cell module.

According to an embodiment of the utility model, a thin film solar cell module includes:

the thin film solar cell comprises a thin film solar cell body, wherein one side of the thin film solar cell body, which is provided with a cell thin film, is a backlight side, and the other side of the thin film solar cell body is a light-facing side;

the low-radiation glass is arranged on the light-facing side of the thin-film solar cell body, and the low-radiation glass and the thin-film solar cell body are arranged at intervals to form a hollow layer.

The thin film solar cell module provided by the embodiment of the utility model has at least the following beneficial effects:

through locating thin film solar cell body to light side and with thin film solar cell body interval arrangement formation hollow layer with low radiation glass, external thermal radiation and ultraviolet ray can be blocked by low radiation glass from this to can play thermal-insulated effect of separating ultraviolet ray to thin film solar cell body, avoid thin film solar cell body to lead to ageing or temperature rising to appear because of receiving external thermal radiation and ultraviolet influence, the setting of hollow layer also can play certain thermal-insulated effect when playing the sound insulation effect, protect thin film solar cell body that can be better from this, prolong the life of thin film solar cell body.

According to some embodiments of the utility model, the thin film solar cell further comprises a first glass located on the backlight side of the thin film solar cell body, and the first glass and the cell thin film of the thin film solar cell body are adhered to each other through an adhesive layer.

According to some embodiments of the utility model, the thin film solar cell body is a cadmium telluride thin film solar cell.

According to some embodiments of the utility model, the low-emissivity glass comprises a third glass and a coating layer arranged on one side of the third glass close to the thin film solar cell body, wherein the coating layer of the low-emissivity glass comprises a first dielectric layer, a first functional silver layer, a first barrier layer, a second dielectric layer, a second functional silver layer, a second barrier layer, a third dielectric layer and a protective layer which are sequentially arranged on one side of the third glass from inside to outside.

According to some embodiments of the utility model, the first dielectric layer comprises a first metal oxide layer provided on the third glass surface and a second metal oxide layer provided on the first metal oxide layer surface; the thickness of the first metal oxide layer is 20nm to 40nm, and the thickness of the second metal oxide layer is 5nm to 20nm.

According to some embodiments of the utility model, the second dielectric layer includes a third metal oxide layer, a fourth metal oxide layer, and a fifth metal oxide layer sequentially disposed on a side of the first barrier layer facing away from the first functional silver layer; the thickness of the third metal oxide layer is 5nm to 20nm, the thickness of the fourth metal oxide layer is 50nm to 70nm, and the thickness of the fifth metal oxide layer is 5nm to 20nm.

According to some embodiments of the utility model, the third dielectric layer includes a sixth metal oxide layer and a seventh metal oxide layer sequentially disposed on a side of the second barrier layer facing away from the second functional silver layer, the sixth metal oxide layer having a thickness of 5nm to 20nm, and the seventh metal oxide layer having a thickness of 20nm to 40nm.

According to some embodiments of the utility model, the first functional silver layer and the second functional silver layer are both silver layers, the first functional silver layer having a thickness of 8nm to 12nm and the second functional silver layer having a thickness of 12nm to 16nm.

According to some embodiments of the utility model, the first barrier layer and the second barrier layer are each one of a nickel chromium layer, a nickel chromium oxide layer, a titanium layer, and a titanium oxide layer; the thickness of the first barrier layer and the second barrier layer is 1nm to 3nm.

According to some embodiments of the utility model, the protective layer is a metal nitride layer or an eighth metal oxide layer, and the protective layer has a thickness of 5nm to 10nm.

Additional aspects and advantages of the utility model will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the utility model.

Drawings

The foregoing and/or additional aspects and advantages of the utility model will become apparent and may be better understood from the following description of embodiments taken in conjunction with the accompanying drawings in which:

fig. 1 is a schematic structural diagram of a thin film solar cell module according to an embodiment of the present utility model;

fig. 2 is a schematic structural view of the low emissivity glass of fig. 1.

Reference numerals:

the solar cell includes a first glass 100, an adhesive layer 200, a thin film solar cell body 300, a hollow layer 400, a low-emissivity glass 500, a third glass 510, a first dielectric layer 520, a first metal oxide layer 521, a second metal oxide layer 522, a first functional silver layer 530, a first barrier layer 540, a second dielectric layer 550, a third metal oxide layer 551, a fourth metal oxide layer 552, a fifth metal oxide layer 553, a second functional silver layer 560, a second barrier layer 570, a third dielectric layer 580, a sixth metal oxide layer 581, a seventh metal oxide layer 582, and a protective layer 590.

Detailed Description

Embodiments of the present utility model are described in detail below, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to like or similar elements or elements having like or similar functions throughout. The embodiments described below by referring to the drawings are illustrative only and are not to be construed as limiting the utility model.

In the description of the present utility model, it should be understood that references to orientation descriptions such as upper, lower, front, rear, left, right, etc. are based on the orientation or positional relationship shown in the drawings, are merely for convenience of description of the present utility model and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, a number means one or more, a number means two or more, and greater than, less than, exceeding, etc. are understood to not include the present number, and above, below, within, etc. are understood to include the present number. The description of the first and second is for the purpose of distinguishing between technical features only and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or implicitly indicating the precedence of the technical features indicated.

In the description of the present utility model, unless explicitly defined otherwise, terms such as arrangement, installation, connection, etc. should be construed broadly and the specific meaning of the terms in the present utility model can be reasonably determined by a person skilled in the art in combination with the specific contents of the technical scheme.

Referring to fig. 1, an embodiment of the present utility model provides a thin film solar cell module, which includes a thin film solar cell body 300 and a low-emissivity glass 500. The thin film solar cell body 300 has a cell thin film with one side being a backlight side and the other side being a light-facing side. The low-emissivity glass 500 is disposed on the light-facing side of the thin film solar cell body 300, and the low-emissivity glass 500 is spaced apart from the thin film solar cell body 300 and forms the hollow layer 400.

In the above structure, the low-emissivity glass 500 has the characteristics of high transmission of visible light, high reflection of middle far infrared rays and ultraviolet rays, and the low-emissivity glass 500 is arranged on the light-oriented side of the thin film solar cell body 300 and is arranged at intervals with the thin film solar cell body 300 to form the hollow layer 400, so that external heat radiation and ultraviolet rays can be blocked by the low-emissivity glass 500, the thin film solar cell body 300 can be thermally insulated and ultraviolet rays, aging or temperature rise of the thin film solar cell body 300 due to the influence of the external heat radiation and ultraviolet rays is avoided, and the hollow layer 400 has a certain thermal insulation effect while playing a sound insulation role, so that the thin film solar cell body 300 can be better protected, and the service life of the thin film solar cell body 300 is prolonged.

In addition, the low-emissivity glass 500 can be produced in different glass surface colors by setting different process parameters, so that the appropriate glass surface color can be selected according to the requirements, and the appearance of the thin film solar cell module can be changed.

It can be understood that, one side of the thin film solar cell body 300 having the cell thin film is a backlight side, and the other side is a light-facing side. The light-facing side specifically means a side of the thin film solar cell body 300 that is located outdoors when in use, and the backlight side specifically means a side of the thin film solar cell body 300 that is located indoors when in use.

It is understood that the thin film solar cell body 300 may adopt a conventional structure of the thin film solar cell body 300, that is, the thin film solar cell includes a second glass and a cell thin film deposited on a surface of the second glass, and the cell thin film is located on a backlight side of the second glass.

It may be appreciated that the low-emissivity glass 500 and the thin film solar cell body 300 are arranged at intervals and form the hollow layer 400, and specifically, a frame body may be disposed between the low-emissivity glass 500 and the thin film solar cell body 300, that is, the low-emissivity glass 500 and the thin film solar cell body 300 are disposed on two opposite sides of the frame body, or an abutting block may also be disposed between the low-emissivity glass 500 and the thin film solar cell body 300, that is, the low-emissivity glass 500 and the thin film solar cell body 300 are abutted on two opposite sides of the abutting block. The specific structures of the frame body and the abutment block are not particularly limited, and the low-emissivity glass 500 and the thin-film solar cell body 300 can be arranged at intervals to form the hollow layer 400.

Referring to fig. 1, in some embodiments, the thin film solar cell module further includes a first glass 100 positioned at a backlight side of the thin film solar cell body 300, and the first glass 100 and the cell thin film of the thin film solar cell body 300 are adhered to each other by an adhesive layer 200.

In the above structure, the first glass 100 can protect the thin film solar cell body 300, and prevent the cell thin film of the thin film solar cell body 300 from being damaged due to direct exposure to the room. In addition, the first glass 100 and the cell film of the thin film solar cell body 300 are adhered to each other by the adhesive layer 200, so that the thin film solar cell body 300 and the first glass 100 are firmly connected, and detachment is not easy to occur.

It is understood that the adhesive layer 200 may be a PVB adhesive layer. PVB is also called polyvinyl alcohol Ding Quanzhi, has the performances of transparency, heat resistance, cold resistance, high mechanical strength and the like, has high adhesive force, and can firmly adhere the thin film solar cell body 300 and the first glass 100 together. Of course, in addition to this, the adhesive layer 200 may be an EVA adhesive layer, which is also called ethylene-vinyl acetate copolymer, and has the advantages of fast curing, low pollution, and strong adhesive force.

It is understood that in some embodiments, the first glass 100 may specifically be a plain glass of 6 mm.

In some embodiments, the thin film solar cell body 300 is embodied as a cadmium telluride thin film solar cell.

In the above structure, the cadmium telluride thin film solar cell refers to the thin film solar cell body 300 having a cadmium telluride thin film as a main functional layer. The cadmium telluride thin film solar cell has high light absorptivity and conversion efficiency, stable performance, good safety performance, high temperature resistance, attenuation resistance, weak light power generation performance, shielding resistance, angle dependence performance, environmental protection performance and the like, the appearance of the cadmium telluride thin film solar cell can be customized, and the cadmium telluride thin film solar cell has high fusion with a building, and besides, the cadmium telluride thin film solar cell can realize uniform light transmittance, and the light transmittance can be adjusted between 0% and 70%. Therefore, by adopting the cadmium telluride thin film solar cell, the thin film solar cell module provided by the embodiment of the utility model has more excellent cell performance.

It is to be understood that the thin film solar cell body 300 may be a cadmium telluride thin film solar cell, a gallium arsenide thin film solar cell, a copper indium selenium thin film solar cell, or the like, which is not particularly limited.

Referring to fig. 2, in some embodiments, the low-emissivity glass 500 includes a third glass 510 and a coating layer disposed on a side of the third glass 510 adjacent to the thin film solar cell body 300, and the coating layer of the low-emissivity glass 500 includes a first dielectric layer 520, a first functional silver layer 530, a first barrier layer 540, a second dielectric layer 550, a second functional silver layer 560, a second barrier layer 570, a third dielectric layer 580, and a protective layer 590 sequentially disposed on a side of the third glass 510 from inside to outside.

In the above structure, the coating layer is set to be the first dielectric layer 520, the first functional silver layer 530, the first barrier layer 540, the second dielectric layer 550, the second functional silver layer 560, the second barrier layer 570, the third dielectric layer 580 and the protective layer 590 which are arranged on the third glass 510 from inside to outside, wherein the first functional silver layer 530 and the second functional silver layer 560 can well reflect the external infrared thermal radiation, so that the low-emissivity glass 500 has lower emissivity and heat transfer coefficient, the heat insulation performance of the low-emissivity glass 500 is further improved, meanwhile, the ultraviolet rays can be better blocked, and the adverse phenomena such as aging of a battery assembly caused by ultraviolet radiation are reduced. In addition, the structure can also improve the visible light transmittance of the low-emissivity glass 500, thereby greatly reducing the power generation damage of the thin film solar cell body 300.

In some embodiments, in order to provide the low-emissivity glass 500 with higher light transmittance and better heat insulation performance while reducing direct irradiation of the outdoor ultraviolet light to the thin film solar cell body 300, the first dielectric layer 520 includes a first metal oxide layer 521 disposed on the surface of the third glass 510 and a second metal oxide layer 522 disposed on the surface of the first metal oxide layer 521; the thickness of the first metal oxide layer 521 is 20nm to 40nm, and the thickness of the second metal oxide layer 522 is 5nm to 20nm.

It is understood that the first metal oxide layer 521 may be a ZnSnOx layer, and the second metal oxide layer 522 may be a ZnAlOx layer.

In some embodiments, in order to provide the low-emissivity glass 500 with higher light transmittance and better heat insulation performance, while reducing direct irradiation of the outdoor uv light to the thin film solar cell body 300, the second dielectric layer 550 includes a third metal oxide layer 551, a fourth metal oxide layer 552, and a fifth metal oxide layer 553 sequentially disposed on a side of the first barrier layer 540 facing away from the first functional silver layer 530; the thickness of the third metal oxide layer 551 is 5nm to 20nm, the thickness of the fourth metal oxide layer 552 is 50nm to 70nm, and the thickness of the fifth metal oxide layer 553 is 5nm to 20nm.

It is to be understood that the third metal oxide layer 551 may be a ZnAlOx layer, the fourth metal oxide layer 552 may be a ZnSnOx layer, and the fifth metal oxide layer 553 may be a ZnAlOx layer.

In some embodiments, in order to provide the low-emissivity glass 500 with higher light transmittance and better heat insulating properties while reducing direct irradiation of outdoor ultraviolet light to the thin film solar cell body 300, the third dielectric layer 580 includes a sixth metal oxide layer 581 and a seventh metal oxide layer 582 sequentially disposed on a side of the second barrier layer 570 facing away from the second functional silver layer 560, the thickness of the sixth metal oxide layer 581 is 5nm to 20nm, and the thickness of the seventh metal oxide layer 582 is 20nm to 40nm.

It is to be understood that the sixth metal oxide layer 581 may be a ZnAlOx layer, and the seventh metal oxide layer 582 may be a ZnSnOx layer.

In some embodiments, in order for the low-emissivity glass 500 to have higher light transmittance and better heat insulating properties while reducing direct irradiation of outdoor ultraviolet rays into the thin film solar cell body 300 or the room, the thickness of the first functional silver layer 530 is 8nm to 12nm, and the thickness of the second functional silver layer 560 is 12nm to 16nm.

In some embodiments, in order for the low emissivity glass 500 to have higher light transmittance and better thermal insulation properties, the first barrier layer 540 and the second barrier layer 570 are each one of a nickel chromium layer, a nickel chromium oxide layer, a titanium layer, and a titanium oxide layer; the thickness of the first barrier layer 540 and the second barrier layer 570 is 1nm to 3nm.

In some embodiments, the protective layer 590 is a metal nitride layer or a metal oxide layer, and the thickness of the protective layer 590 is 5nm to 10nm. The protective layer 590 can better protect each film layer of the low-emissivity glass 500, so that the low-emissivity glass 500 can maintain its excellent light transmittance and heat insulation properties while reducing the direct irradiation of outdoor ultraviolet rays to the thin film solar cell body 300 or the indoor space.

It is to be understood that the protective layer 590 is a metal nitride layer or an eighth metal oxide layer, where the protective layer 590 may specifically be one of a TiO2 layer, a ZrO2 layer, a Zr3N4 layer, a SiAlZrN layer, and a SiAlZrO layer, which is not particularly limited to the present utility model.

One embodiment is provided below:

referring to fig. 1 and 2, a thin film solar cell assembly according to an embodiment of the present utility model includes a cadmium telluride thin film solar cell, a first glass 100, and a low emissivity glass 500. And carrying out light transmission treatment on the cadmium telluride thin film solar cell, wherein the light transmittance is 0-70%. The cadmium telluride thin film solar cell comprises a second glass and a cadmium telluride cell thin film deposited on the surface of the second glass, wherein one side of the cadmium telluride thin film is a backlight side, and the other side of the cadmium telluride thin film is a light-facing side. The first glass 100 is disposed on the backlight side of the cadmium telluride thin film solar cell, and is adhered to the cadmium telluride thin film of the cadmium telluride thin film solar cell through a PVB adhesive layer. The low-emissivity glass 500 is arranged on the light-facing side of the cadmium telluride thin film solar cell, a coating layer is arranged on one side of the low-emissivity glass 500, which is close to the cadmium telluride thin film solar cell, and the low-emissivity glass 500 and the cadmium telluride thin film solar cell are arranged at intervals and form a hollow layer 400 with the thickness of 12 mm. The first glass 100 is made of plain white glass with the thickness of 6mm, the thickness of the cadmium telluride thin film solar cell is 3.2mm, and the first glass 100 and the cell thin film of the cadmium telluride thin film solar cell are bonded through a PVB adhesive layer.

The low-emissivity glass 500 is a dual-silver low-emissivity glass, specifically, the low-emissivity glass 500 includes a third glass 510, and the coating layer of the low-emissivity glass 500 includes a first dielectric layer 520, a first functional silver layer 530, a first barrier layer 540, a second dielectric layer 550, a second functional silver layer 560, a second barrier layer 570, a third dielectric layer 580, and a protective layer 590 sequentially disposed from inside to outside on one side of the third glass 510.

The first dielectric layer 520 includes a first metal oxide layer 521 provided on the surface of the third glass 510, and a second metal oxide layer 522 provided on the surface of the first metal oxide layer 521, wherein the first metal oxide layer 521 is a ZnSn Ox layer of 20nm to 40nm, and the second metal oxide layer 522 is a ZnAlOx layer of 5nm to 20nm.

The first functional silver layer 530 has a thickness of 8nm to 12nm.

The first barrier layer 540 is one of a nickel chrome layer, a nickel chrome oxide layer, a titanium layer, or a titanium oxide layer, and has a thickness of 1nm to 3nm.

The second dielectric layer 550 includes a third metal oxide layer 551, a fourth metal oxide layer 552, and a fifth metal oxide layer 553 sequentially disposed on a side of the first barrier layer 540 facing away from the first functional silver layer 530, wherein the third metal oxide layer 551 is a ZnAlOx layer from 5nm to 20nm, the fourth metal oxide layer 552 is a ZnSnOx layer from 50nm to 70nm, and the fifth metal oxide layer 553 is a ZnAlOx layer from 5nm to 20nm.

The second functional silver layer 560 has a thickness of 12nm to 16nm.

The second barrier layer 570 is one of a nickel-chromium layer, a nickel-chromium oxide layer, a titanium layer, or a titanium oxide layer, and has a thickness of 1nm to 3nm.

The third dielectric layer 580 includes a sixth metal oxide layer 581 and a seventh metal oxide layer 582 sequentially disposed on a side of the second barrier layer 570 facing away from the second functional silver layer 560, wherein the sixth metal oxide layer 581 is an AlOx layer of 5nm to 20nm, and the seventh metal oxide layer 582 is a ZnSnOx layer of 20nm to 40nm.

The protective layer 590 is a metal nitride layer or an eighth metal oxide layer, and specifically may be one of a TiO2 layer, a ZrO2 layer, a Zr3N4 layer, a SiAlZrN layer, and a SiAlZrO layer, and has a thickness of 5nm to 10nm.

The first metal oxide layer 521, the second metal oxide layer 522, the third metal oxide layer 551, the fourth metal oxide layer 552, the fifth metal oxide layer 553, the sixth metal oxide layer 581, the seventh metal oxide layer 582, and the eighth metal oxide layer, that is, all the metal oxide layers are formed by adopting a mode of sputtering deposition in an argon-oxygen atmosphere by using an intermediate frequency power supply with a power of 30kw to 60kw and a rotating cathode.

The first functional silver layer 530, the second functional silver layer 560, the first barrier layer 540 and the second barrier layer 570 are all formed by sputtering deposition of a direct current or direct current pulse power supply of 5kw to 20kw plus a planar cathode in a pure argon atmosphere.

The metal nitride layer is formed by adopting a mode of sputtering and depositing in an argon-nitrogen atmosphere by using an intermediate frequency power supply of 30kw to 60kw and a rotating cathode.

When the low-emissivity glass 500 is coated, the low-emissivity glass 500 is placed in a single tempering furnace, heated for 360 seconds at the upper temperature of 680 ℃ and the lower temperature of 670 ℃, and subjected to 100 seconds of extreme cold air pressure of 2.02KPa and 100 seconds of cooling air pressure of 1.8KPa, so that the blue low-emissivity glass 500 with the stress of 105MPa can be obtained.

By adopting the structure, the thin film solar cell module of the embodiment of the utility model can enable the glass surface color of the low-emissivity glass 500 to be blue, the color value a is in the range of-1 to 1, the color value b is in the range of-10 to-14, the transmittance is in the range of 75% to 85%, the coefficient national standard value of the glass is 0.45 to 0.55, and the photo-thermal ratio national standard value is 1.7 to 1.8.

The embodiments of the present utility model have been described in detail with reference to the accompanying drawings, but the present utility model is not limited to the above embodiments, and various changes can be made within the knowledge of one of ordinary skill in the art without departing from the spirit of the present utility model.

Claims (5)

1. Thin film solar cell module, characterized by comprising:

a thin film solar cell body (300), wherein one side of the thin film solar cell body (300) provided with a cell thin film is a backlight side, and the other side is a light-facing side;

a low-emissivity glass (500) arranged on the light-facing side of the thin-film solar cell body (300), wherein the low-emissivity glass (500) is arranged at intervals from the thin-film solar cell body (300) and forms a hollow layer (400);

the solar cell further comprises first glass (100) positioned on the backlight side of the thin-film solar cell body (300), wherein the first glass (100) and a cell film of the thin-film solar cell body (300) are mutually adhered through an adhesive layer (200);

the low-emissivity glass (500) comprises a third glass (510) and a coating layer arranged on one side of the third glass (510) close to the thin-film solar cell body (300), wherein the coating layer comprises a first dielectric layer (520), a first functional silver layer (530), a first barrier layer (540), a second dielectric layer (550), a second functional silver layer (560), a second barrier layer (570), a third dielectric layer (580) and a protective layer (590) which are sequentially arranged on one side of the third glass (510) from inside to outside;

the first dielectric layer (520) comprises a first metal oxide layer (521) arranged on the surface of the third glass (510) and a second metal oxide layer (522) arranged on the surface of the first metal oxide layer (521);

the first metal oxide layer (521) has a thickness of 20nm to 40nm, and the second metal oxide layer (522) has a thickness of 5nm to 20nm;

the second dielectric layer (550) comprises a third metal oxide layer (551), a fourth metal oxide layer (552) and a fifth metal oxide layer (553) which are sequentially arranged on one side of the first barrier layer (540) away from the first functional silver layer (530);

the thickness of the third metal oxide layer (551) is 5nm to 20nm, the thickness of the fourth metal oxide layer (552) is 50nm to 70nm, and the thickness of the fifth metal oxide layer (553) is 5nm to 20nm;

the third dielectric layer (580) comprises a sixth metal oxide layer (581) and a seventh metal oxide layer (582) which are sequentially arranged on one side of the second barrier layer (570) away from the second functional silver layer (560),

the thickness of the sixth metal oxide layer (581) is 5nm to 20nm, and the thickness of the seventh metal oxide layer (582) is 20nm to 40nm.

2. The thin film solar cell assembly according to claim 1, wherein the thin film solar cell body (300) is a cadmium telluride thin film solar cell.

3. The thin film solar cell module according to claim 1, wherein the thickness of the first functional silver layer (530) is 8nm to 12nm and the thickness of the second functional silver layer (560) is 12nm to 16nm.

4. The thin film solar cell module according to claim 1, wherein the first barrier layer (540) and the second barrier layer (570) are each one of a nickel chromium layer, a nickel chromium oxide layer, a titanium oxide layer;

the thickness of the first barrier layer (540) and the second barrier layer (570) is 1nm to 3nm.

5. The thin-film solar cell module according to claim 1, characterized in that the protective layer (590) is a metal nitride layer or an eighth metal oxide layer, the protective layer (590) having a thickness of 5nm to 10nm.