TW201208084A - Thin film solar cell with color layer and fabrication method for the same - Google Patents

Abstract

The present invention provides a thin film solar cell and fabrication method thereof. The thin film solar cell comprises a thin film solar cell body and at least one film layer. The fabrication method includes the following steps: forming the at least one film layer on the second surface of the thin film solar cell body, such that the user may see through the thin film solar cell when viewing from the first surface toward the second surface; but, the user may only see the reflection in a specific color but not seeing through the thin film solar cell when viewing from the second surface toward the first surface. The thin film solar cell with color layer according to the present invention may be used for curtain wall of a building, such that the people inside the building may see through the curtain wall, but the people outside the building cannot see through the curtain wall and observe the interior of the building.

Description

201208084 VI. Description of the Invention: [Technical Field] The present invention relates to a solar cell having a colorful layer and a method of fabricating the same, and more particularly to a thin film solar cell having a colorful layer for use as a building curtain wall and its fabrication method. [Prior Art] The thin-film solar cell used as the curtain wall of the building itself must have a light-transmitting property. As far as the structure of a general light-transmissive thin-film solar cell is concerned, the basic process will pass through three layers of deposition (dprinting) and three procedures of scribe ray, which are briefly described below. The first stage is to form a transparent conductive film (Transp arent) on a glass substrate (Glass Substrate) of a predetermined size by a physical vapor deposition process (PVD).

Conductive Oxide (TCO) layer 'selects materials having high light transmittance and good conductivity' such as indium tin oxide (IT0), tin oxide (Sn〇2), or zinc oxide (Zn0). Next, a front electrode patterning is defined on the transparent conductive film layer using a first laser scribe line. The second stage is the fabrication of an active layer, which generally forms a layer of ρ·“η type on the surface of the front electrode pattern by a Plasma Enhanced Chemicai Vapor Deposition (PECVD) process. Hydrogenated amorphous germanium structure (p_a_si: H/i_a_Si: H/n_a_si: H), the main 201208084 absorber layer uses i semiconductor film as the main structure of light absorption and electron hole pair generation. The ray-ray scribe line defines a pattern on the main absorbing layer. After entering the third stage, a back contact layer mainly composed of aluminum/silver material is formed thereon by a sputtering process, and the first layer is utilized. Three laser scribing lines define a back electrode brittle on the back electrode layer. Finally, a protective layer is formed thereon. When the above-mentioned conventional thin film solar cell is used as a building curtain wall, since the thin film solar cell is It can be transmitted through light. Therefore, the light can be shot from both sides of the battery. That is to say, 'When the solar cell is used as the curtain wall of the building, it can be seen from the inside of the building through the curtain wall. Ministry, even from the outside of the building, the interior of the building can be seen through the curtain wall. However, the Ministry of Construction and Marketing has created the need for the exterior of the Hiroshi Building to be unable to interact with the interior of the building through the curtain wall, but such a conventional solar cell will play itself. At the same time of the conversion of light energy into electrical energy, it is not possible to achieve the desired effect. The job is the reason that the applicant has carefully tested and researched, and presented the case with an ironic spirit. Contents ▲ In order to meet the above needs, the present invention proposes a thin film solar cell with a colorful layer and a manufacturing method thereof. When used as a building curtain wall, it is possible to see the large cake portion from the interior of the building through the miscellaneous curtain wall. Under the condition, from the 201208084 part of the building, the interior of the building cannot be seen through the S-wall curtain wall. According to the above concept, the present invention provides a thin film solar cell comprising: a thin film solar cell body having a first surface and a Second side; and to

a film layer 'on the second side of the thin solar cell body, the at least β film layer for allowing the Kawasaki-face to look at the second side to see through the film solar moon b battery but When looking at the first surface, only the color reflection can be seen and the thin film solar cell cannot be seen. Preferably, the thin film solar cell body comprises: a substrate having a first surface and a second surface; a first electrode layer on the first surface of the substrate, a main absorption layer, located at the first And on the electrode layer; and the second electrode layer is located on the main absorption layer, and the needle layer is located on the second surface of the substrate. Preferably, the material of the substrate is glass, the material of the first electrode layer is a transparent conductive oxide, and the transparent conductive oxide is selected from the group consisting of indium tin oxide, tin oxide and emulsified refraction. The material of the layer is Η·η _arranged hydrogenated amorphous stone eve 'the material of the second electrode layer is - silver material. Preferably, the '5 纟 first-electrode layer has a layer of laminar, and the material of the miscellaneous layer is broken. Preferably, the _ layer thief silk, the simple sniper comprises woven and/or 1 曰曰 ' and the specific color reflection is monochromatic reflection, color reflection and multi-color reflection T - 〇 according to the above concept 'this hair (four) - aspect A thief solar cell I method is provided, comprising the steps of: providing a solar cell body, the 201208084 thin film solar cell body having a first side and a second side; and the second side of the thin film solar cell body Forming at least one film layer for the user to see the thin solar cell from the first side to the second side of the Japanese village, but when viewed from the second side to the first side, only a specific color can be reflected Look through the thin film solar cell. Preferably, the manufacturing method further includes: providing a substrate having a first surface and a second surface; forming a first electrode layer on the first surface of the substrate; and forming the first electrode layer on the first electrode layer Forming a main absorption layer; and on the main absorption layer

The M1-t pole layer' wherein the film layer is formed on the second side of the substrate. The above manufacturing method further comprises: forming a first-electrode layer by physical vapor deposition (pvd), and defining a front electrode pattern on the first electrode layer by using a first Rayleigh line; using a plasma Auxiliary chemical vapor deposition (rccv is used to form the domain (4), and the second paste line of the paste is patterned on the main absorption layer; the second electrode layer is formed by using the money plating process (four) and the first The three laser scribe lines define a preferred back electrode on the second electrode layer, and the protective layer. The manufacturing method further includes: forming on the second electrode layer: using aluminum silver and/or twin crystal rutting Preferably, the above manufacturing method further comprises: forming at least one film layer of 5 Xuan. The wire of the _ Tai battery proposed by the present invention is turned into a large 6 201208084 floor curtain oblique 'in the play itself to convert light energy into electric energy At the same time as the function, Sun allows the user to see the material from the male ___, and from the outside of the building through the curtain, but can not see the interior of the building, and can only see the reflection of monochrome, color or multi-color. / [Implementation]

。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 。 Concise to facilitate understanding, the drawing also outlines the drawing of some of the conventional components. Ming, read the -B, a cross-sectional view of the best implementation of the film field energy battery proposed by the county. In the first fiscal, thin film solar cells are mainly: two = energy battery body i. . And at least one film layer 15 is formed. The solar cell has a first surface and a second surface. The upper surface of the body 100 is the first surface, and the lower surface of the body is the second surface of the thin film solar cell body. Although the Saki 15 is a scale layer, it can also be formed by a plurality of layers of film. The body 2 sends a turn to the scale, and it is expected to set the 阙15 on the other side of the battery. The user can see the thin film solar cell from the first side to the ====! But look at the pool 1 from the second side. When you can only watch the silk color, you can't see the film solar power 201208084 = _ _ solar battery _ is the erg, so only for the more: different composition structure 'only the first picture 'I, the scope of the knowledge of this rib is not only a secret structure. Appreciation of the application The structure of the thin solar cell body of the moon is as follows. Starting from the substrate 10, the first electrode layer 11, the main absorption layer 12, the second electrode layer 13, and the protective layer 14 are sequentially faced. In terms of the use of the material, the material of the first electrode 11 is selected from, for example, indium tin oxide, tin oxide, and zinc oxide.

The material of the main absorption layer u is a gasified amorphous stone of the type _ type, the material of the second electrode layer 13 is a can material, and the material of the protective layer is glass. Please refer to the second figure, which is a schematic diagram of the function of the thin film solar cell proposed by the present invention. Since a material containing Mingyin and/or Shi Xijing is used as a film layer formed on one side of the solar cell body 200, it is produced and has a polarizing society 25_ 献阳能魏2; By riding the display, the thin solar cell 2 can be seen when viewed from the side of the thin film solar cell to the side of the film layer 25, but if viewed from the side of the film layer 25 toward the thin film solar cell body 2, only such as A specific color such as a single color, a color, or a multi-color is reflected and cannot be seen through the thin film solar cell 2. The method for fabricating the thin film solar cell proposed by the present invention is also described in the following section: The structure of the solar cell 1 is described in the following section. $201208084 Please refer to the third figure, which is a flow chart of a preferred embodiment of a method for fabricating a thin film solar cell according to the present invention. First, a transparent conductive film layer is formed on the substrate 1 by a physical vapor deposition process (PVD), and then a front electrode pattern is defined on the transparent conductive film layer by a first laser scribe line to form a first electrode layer. 11 (Step 1). Next, a hydrogenated amorphous germanium structure of the main absorption layer type is formed on the first electrode layer 11 by a plasma assisted chemical vapor deposition (PECVD) process (pa-Si: H/i-a_Si: H/na-Si: H)), then a pattern is defined on the main absorbing layer 12 using a second laser scribe line (step two). Finally, a layer of aluminum/silver material is formed on the main absorbing layer 12 by a sputtering process, and a back electrode pattern is defined on the aluminum/silver material by a third laser scribe line to form a second electrode layer 13. (Step 3). Thereafter, the protective layer 14 is formed by using the glass thereon (step 4). Finishing the thin film solar cell body for f, and then forming at least a film layer 15 on the other side of the thin film solar cell body by using materials such as wires and/or crystals to complete the fabrication of the thin solar cell i (step five ). With such a biased button and a counter-new layer 15, the thin-film solar cell 1 produced is used as a large-screen lining, while allowing the user to convert the light energy into electrical energy, he allows the user to walk from the building. (4) Through the curtain wall, you can see that the Ministry of Foreign Affairs, the outside of the money area, cannot see the interior of the building, but can only see the reflection of monochrome, color or multi-color. The above embodiments are not intended to limit the invention, and various modifications and changes may be made without departing from the spirit and scope of the invention. 9 201208084 [Simplified description of the drawings] The first figure is a cross-sectional view of a preferred embodiment of the solar cell proposed by the present invention. Figure 2 is a schematic diagram of a preferred solar cell for the function of a solar cell - [Major component symbol description] 1 Thin film solar cell 10 substrate 11 First electrode layer 12 Main absorption layer 13 Electrode layer 14 protective layer 15 film layer 100 thin film solar cell body 2 thin film solar cell 25 film layer 200 thin film solar cell body

Claims (1)

201208084 VII. Patent application scope: L kinds of thin film solar cells, including: a thin film solar cell body having a first side and a second side At least one film layer located on the surface of the thin film solar cell body, the at least one of the film faces, the second side of the film, the solar cell, but from the second side On the first side, only the special color and the reverse color can not see through the thin solar cell. 2. The solar cell of the ship solar cell as claimed in claim 1 includes: wherein the film is too substrate, having a first surface and a second surface; and a first electrode layer is located on the first surface of the substrate - a main absorber layer 'on the first electrode layer; and a second electrode layer on the main absorber layer, wherein the film layer is on the second side of the substrate. / 3. The thin film solar cell of claim 2, wherein the substrate is made of glass. 4. If applying for the solar cell of the second item, the material of the first electrode layer is a transparent conductive oxide. 5. The thin film solar cell of claim 4, wherein the transparent conductive oxide is one selected from the group consisting of indium tin oxide _), tin oxide (Sn 〇 2), and oxidized metal (Zn 〇). 6. The solar cell of claim 2, wherein the material of the main absorption 11 201208084 layer is a hydrogenated amorphous stone of the type ρ-ί·η. 7. If the application is to refine the _domain_pool of item 2, the material of the second electrode layer is made of aluminum/silver. The second electrode 8 has a protective layer on the thin layer of the solar cell of the second aspect of the patent application. The protective layer 9 is a solar cell of the eighth aspect of the patent application, and the material is glass. The thin film solar cell of the present invention, wherein the film is called 10. The first or second layer of the patent application has a polarizing property. The material of the layer contains | Lu Yin. 12_If the scope of the patent application is i or 2, the material of the solar cell layer includes Shi Xijing. ^ 13. If you apply for the patent item range 1 (4) pool, the specific color will be reflected in the early color, and the color reflective shirt will reflect it. 14. A method for fabricating a thin film solar cell, comprising the steps of: reading a body, a battery body having a first surface and a second surface; and (the thin film solar cell body is formed on the second surface) At least one film layer, for the user to look at the first side, the battery, but from the second side to the first face _ temple to see through _ film solar energy can not see through the _ solar Wei. Anti-first 12 201208084 15. The manufacturing method of the invention, wherein the step (8) comprises: (al) providing a substrate having a first surface and a second surface; (a2) forming a first surface on the substrate a first electrode; 9 5 (a3) forming a main absorption layer on the electrode layer; and (a4) forming a second electrode layer on the main absorption layer, wherein the film layer is formed on the substrate The second aspect. 16. The method of claim 15, wherein the step (4) comprises: # forming the first electrode layer by a physical vapor deposition (WD) process; and using a first-line laser scribe line The front electrode pattern is formed on the first electrode layer (four). 如. The production method of the fifteenth item of the benefit range, wherein the step (4) comprises using the plasma lion chemical vapor deposition (PECVD) to form the main absorption layer; and the second ray line is set on the aging layer. 18. For example, the method of aging is to include: forming a second electrode layer by a sputtering process; and using a third Rayleigh line on the second electrode layer. The back electrode pattern is defined. If the application method is to apply for the 雏 Μ , , , , , , , , , 财 财 财 财 财 财 财 财 财 财 财 财 财 财 财 财 财 财 财 财 财 财 财 财 财 财 财 财 财 财The manufacturing method, wherein the step (9) comprises forming the at least one film layer by using Ming silver and/or Shi Xijing. Ιί 13