TWI602705B - Has a high transmittance, high hardness and color multilayer film structure - Google Patents

Description

Multi-layer film structure with high light transmission, high hardness and color

The present invention relates to a multilayer film structure, and more particularly to a multilayer film structure having high light transmission, high hardness, and color.

With the advancement of technology, high-transmission and high-hardness screens (substrates) have been widely used in the market, and are used in smart phones, touch tablets, touch TVs, windows, and buildings with glass curtains. . In addition to the material with high hardness, the high-transmission hard film design requires a suitable anti-reflective film layer to produce a substrate with high light transmission and high hardness.

However, although a substrate capable of producing a high light transmission and a high hardness has been gradually formed, if the solar cell module is required to produce color under the combination of the substrate and the solar cell, the power generation efficiency of the solar cell module is severe. Loss. Therefore, there is still room for improvement in the structure of the aforementioned substrate.

In view of the above, the present invention provides a multilayer film structure having high light transmittance, high hardness, and color, thereby protecting the solar cell and providing a color effect, and further improving the conventional power generation efficiency caused by the color solar cell. The problem.

The invention provides a multilayer film structure with high light transmission, high hardness and color, including an anti-reflection layer, a color hard layer and a wave-eliminating layer. The anti-reflective layer is suitable for reducing the reflectivity of the solar cell. The colored hard layer is disposed on the reflective layer, and the colored hard layer has a material of high hardness properties and produces color. The wave absorbing layer is disposed on the color hard layer to increase the anti-reflection effect of the anti-reflection layer and improve the color purity of the reflected light.

According to the present invention, a multilayer film structure having high light transmittance, high hardness and color is sequentially stacked by an anti-reflection layer, a color hard layer and a wave-eliminating layer, wherein the anti-reflection layer can reduce the reflectivity of the solar cell, The colored hard layer has a material of high hardness properties and produces color, and the wave absorbing layer increases the antireflection effect of the antireflection layer and improves the color purity of the reflected light. In this way, the protection of the solar cell can be effectively achieved and the color effect can be provided, and the problem of the conventional power generation efficiency caused by the color solar cell is further improved.

The above description of the present invention and the following description of the embodiments of the present invention are intended to illustrate and explain the spirit and principles of the invention.

The detailed features and advantages of the present invention are set forth in the Detailed Description of the Detailed Description of the <RTIgt; </ RTI> <RTIgt; </ RTI> </ RTI> </ RTI> <RTIgt; The objects and advantages associated with the present invention can be readily understood by those skilled in the art. The following examples are intended to describe the present invention in further detail, but are not intended to limit the scope of the invention.

1 is a schematic view showing a multilayer film structure having high light transmittance, high hardness, and color according to an embodiment of the present invention. The multilayer film structure 100 having high light transmission, high hardness, and color includes an anti-reflection layer 110, a color hard layer 120, and a wave absorbing layer 130. The anti-reflective layer 110 is suitable for reducing the reflectivity of a solar cell (not shown). That is, the anti-reflection layer 110 of the present embodiment can be adapted to be bonded to a solar cell in order to reduce the reflectivity of the solar cell.

Further, wherein the anti-reflection layer 110 is, for example, a nano-layered structure film or a nano-composite structure film, the thickness of the anti-reflection layer 110 is, for example, between 40 nm and 150 nm, and the hardness of the anti-reflection layer 110. For example between 8 GPa and 18 GPa. Moreover, the material of the anti-reflection layer 110 is, for example, one of aluminum nitride, aluminum oxynitride, aluminum oxide, cerium oxide, cerium oxynitride, cerium nitride, titanium dioxide, or a combination thereof. Further, the visible light refractive index range of the nano-multilayer structure film forming the anti-reflection layer 110 is, for example, between 1.5 and 2.3, and the visible light refractive index range of the anti-reflection layer 110 nano-composite structure film is, for example, 1.3 to 2.8. between.

The color hard layer 120 is disposed on the anti-reflection layer 110, and the color hard layer 110 has a material of high hardness properties and produces color. The color hard layer 120 is disposed on the other side of the reflective layer 110 with respect to one side of the solar cell.

In the present embodiment, the color hard layer 120 is, for example, a stacked structure of a film having a quarter wavelength, or a stacked structure of a film having an odd multiple of a quarter wavelength. Further, the stacked structure of the aforementioned film having a quarter wavelength is, for example, a plurality of thin films having a quarter-wavelength low refractive index (1/4λ _L ) and a plurality of high refractive indices having a quarter wavelength ( 1/4λ _H ) films are stacked alternately.

For example, a film having a quarter-wavelength low refractive index (1/4λ _L ) is one, and a film having a quarter-wavelength high refractive index (1/4λ _H ) is two, with four points. One wavelength low refractive index (1/4λ _L ) film is disposed between two films having a quarter-wavelength high refractive index (1/4λ _H ); a quarter-wavelength low refractive index (1/ The film of 4λ _L ) is two, and the film having a quarter-wavelength high refractive index (1/4λ _H ) is three, and the stacking order is a quarter-wavelength high refractive index (1/4λ _H ). Thin film, film with a quarter-wavelength low refractive index (1/4λ _L ), film with a quarter-wavelength high refractive index (1/4λ _H ), and a quarter-wavelength low refractive index (1/ A film of 4λ _L ) having a quarter-wavelength high refractive index (1/4λ _H ) film. The rest is analogy.

In addition, the user can adjust the sum of the number of films in the stack structure according to their needs, so that the color hard layer 120 can produce different colors to achieve the desired color of the user.

Further, the material of high hardness is, for example, two or a combination of aluminum nitride, aluminum oxynitride, aluminum oxide, cerium oxide, cerium oxynitride, cerium nitride, and titanium dioxide. The thickness of the colored hard layer 120 is, for example, between 300 nm and 1200 nm, and the hardness of the colored hard layer 120 is, for example, 10 GPa to 30 GPa, and the refractive index of the visible light layer 120 has a refractive index range of, for example, 1.3. Between 2.8.

The wave absorbing layer 130 is disposed on the color hard layer 120 to increase the anti-reflection effect of the anti-reflection layer and improve the color purity of the reflected light. The wave absorbing layer 130 is disposed on the other side of the side of the color hard layer 120 with respect to the anti-reflection layer 110.

In the present embodiment, the wave absorbing layer 130 is, for example, a nano-layered structure or a nano-composite structure. The thickness of the damming layer 130 is, for example, between 20 nm and 100 nm, and the hardness of the absorbing layer 130 is, for example, 8 GPa to 18 GPa. Moreover, the material of the wave absorbing layer 130 is, for example, one of aluminum nitride, aluminum oxynitride, aluminum oxide, cerium oxide, cerium oxynitride, cerium nitride, titanium dioxide, or a combination thereof. In addition, the visible light refractive index range of the nano-structured film forming the wave-depleting layer 130 is, for example, between 1.5 and 2.3, and the visible light refractive index of the wave-forming layer 130 nano-composite structure film is, for example, between 1.3 and 2.8. between.

In addition, the multilayer film structure 100 having high light transmittance, high hardness, and color further includes a transparent substrate 140. The transparent substrate 140 is disposed on the wave-eliminating layer 130, that is, the transparent substrate 140 is disposed on the other side of the side of the wave-eliminating layer 130 with respect to the color hard layer 120. Also, the refractive index of visible light of the transparent substrate 140 is, for example, between 1.4 and 1.8.

The above describes the internal constituent members of the multilayer film structure 100 and their arrangement relationship. Some experimental data will be listed below to illustrate the effects that can be achieved with the multilayer film structure 100 of the present embodiment.

2 is a reflectance spectrum of a colored hard layer and an achromatic glass according to an embodiment of the present invention. In FIG. 2, a curve S1 represents a reflectance spectrum of a color hard layer capable of generating a blue color; a curve S2 represents a reflectance spectrum of a color hard layer which can produce a green color; and a curve S3 represents a color hard layer which can generate a red color. The reflectance spectrum; curve S4 represents the reflectance spectrum of achromatic glass. As shown in FIG. 2, the color hard layer provided in this embodiment has a better reflectivity effect.

According to the theory, the reflection of color light will cause the solar cell power generation efficiency to decrease, so the anti-reflective coating design is to increase the transmittance of the non-chromatic light wavelength range. FIG. 3 is a measurement result of external quantum efficiency (EQE) of a solar cell packaged by a solar cell package using a multi-layer film structure having a color hard layer and a general colorless glass disclosed in an embodiment of the present invention. In FIG. 3, curve S5 represents the external quantum efficiency of a solar cell packaged with achromatic glass; curve S6 represents the external quantum efficiency of a solar cell packaged with a blue colored hard layer (blue glass); curve S7 represents the use of green External quantum efficiency of a solar cell encapsulated in a colored hard layer (blue glass); curve S8 represents an external quantum efficiency of a solar cell packaged with a red colored hard layer (blue glass), and an external quantum efficiency becomes low As the theory predicts.

4 is a measurement result of a current-voltage characteristic curve of a color solar cell packaged with a color hard layer disclosed in an embodiment of the present invention. In Fig. 4, a curve S9 represents a voltage current characteristic curve, and a curve S10 represents a power curve. Fig. 5 is a measurement result of a current-voltage characteristic curve of a solar cell packaged with a colorless glass. In Fig. 5, a curve S11 represents a voltage-current characteristic curve, and a curve S12 represents a power curve. From the results of FIGS. 4 and 5, the current-voltage characteristic curve of the color solar cell packaged by the color hard layer provided by the present embodiment has a good effect.

Table 1 shows the electrical measurement results of the color solar cells packaged using the color hard layer of the present embodiment, and Table 2 shows the electrical measurement results of the solar cells packaged with the colorless glass. From Tables 1 and 2, the measurement results of Table 1 can be seen, showing that the power generation efficiency η (%) of the color solar cell packaged with the color hard layer of the present embodiment is only less than 0.3%, and is created. At the same time, the color efficiency of the original solar cell is maintained. Table 1 Electrical measurement results of the color solar cell packaged by the color hard layer of the present embodiment         <TABLE border="1" borderColor="#000000" width="85%"><TBODY><tr><td> sample</td><td> I_sc (mA) < /td><td> V_oc (V) </td><td> Power generation efficiency Ƞ (%) </td><td> Fill factor FF </td></tr>< Tr><td> Measurement 1 </td><td> 41.67 </td><td> 0.50 </td><td> 14.54 </td><td> 0.70 </td></tr><tr> <td> Measurement 2 </td><td> 42.00 </td><td> 0.50 </td><td> 14.38 </td><td> 0.69 </td></tr><tr><td > Measurement 3 </td><td> 41.64 </td><td> 0.50 </td><td> 14.44 </td><td> 0.69 </td></tr></TBODY></TABLE >Table 2 Electrical measurement results of solar cells packaged in colorless glass         <TABLE border="1" borderColor="#000000" width="85%"><TBODY><tr><td> sample</td><td> I_sc (mA) < /td><td> V_oc (V) </td><td> Power generation efficiency Ƞ (%) </td><td> Fill factor FF </td></tr>< Tr><td> Measurement 1 </td><td> 47.91 </td><td> 0.49 </td><td> 14.84 </td><td> 0.63 </td></tr><tr> <td> Measurement 2 </td><td> 48.52 </td><td> 0.49 </td><td> 14.83 </td><td> 0.62 </td></tr><tr><td > Measurement 3 </td><td> 47.74 </td><td> 0.49 </td><td> 14.81 </td><td> 0.63 </td></tr></TBODY></TABLE >

Further, Fig. 6 is a measurement result of the surface hardness of the color hard layer and the colorless glass according to the embodiment of the present invention. In Fig. 6, the load and the indentation depth are measured by a nanoindenter, wherein the curve S13 represents the surface hardness measurement result of the color hard layer of the embodiment of the present invention, and the curve S14 represents the surface hardness measurement result of the colorless glass. As can be seen from FIG. 6, since the color hard layer of the present embodiment is designed with a high hardness coating, the surface hardness of the color hard layer is also higher than that of the colorless glass.

In summary, the multi-layer film structure with high light transmittance, high hardness and color disclosed in the embodiments of the present invention is sequentially stacked by an anti-reflection layer, a color hard layer and a wave-eliminating layer, wherein the anti-reflection layer can reduce the solar cell. The reflectivity, the color hard layer has a material of high hardness properties and produces color, and the wave absorbing layer increases the anti-reflection effect of the anti-reflection layer and improves the color purity of the reflected light. In this way, the protection of the solar cell can be effectively achieved and the color effect can be provided, and the problem of the conventional power generation efficiency caused by the color solar cell is further improved.

Although the present invention has been disclosed above in the foregoing embodiments, it is not intended to limit the invention. It is within the scope of the invention to be modified and modified without departing from the spirit and scope of the invention. Please refer to the attached patent application for the scope of protection defined by the present invention.

100‧‧‧Multilayer film structure with high light transmission, high hardness and color

110‧‧‧Anti-reflective layer

120‧‧‧Color hard layer

130‧‧‧Wave layer

140‧‧‧Transparent substrate

The drawings are intended to provide a further understanding of the present application, and are intended to be a part of this application. In the drawings: FIG. 1 is a schematic view showing a multilayer film structure having high light transmittance, high hardness, and color according to an embodiment of the present invention. 2 is a reflectance spectrum of a colored hard layer and an achromatic glass according to an embodiment of the present invention. FIG. 3 is a measurement result of external quantum efficiency (EQE) of a solar cell packaged by a solar cell package using a multi-layer film structure having a color hard layer and a general colorless glass disclosed in an embodiment of the present invention. 4 is a measurement result of a current-voltage characteristic curve of a color solar cell packaged with a color hard layer disclosed in an embodiment of the present invention. Fig. 5 is a measurement result of a current-voltage characteristic curve of a solar cell packaged with a colorless glass. Fig. 6 is a graph showing the surface hardness measurement results of a color hard layer and a colorless glass according to an embodiment of the present invention.

100‧‧‧Multilayer film structure with high light transmission, high hardness and color

110‧‧‧Anti-reflective layer

120‧‧‧Color hard layer

130‧‧‧Wave layer

140‧‧‧Transparent substrate

Claims (9)

A multilayer film structure having high light transmittance, high hardness and color, comprising: an anti-reflection layer suitable for reducing the reflectivity of a solar cell, wherein the anti-reflection layer is a nano-layered structure film or a nano composite a color thin layer disposed on the reflective layer, the colored hard layer having a high hardness property and producing a color, wherein the colored hard layer is a film having an odd multiple thickness of a quarter wavelength a stacking structure; and a wave absorbing layer disposed on the color hard layer to increase an anti-reflective effect of the anti-reflective layer and improve the color purity of a reflected light, wherein the wave-eliminating layer is a nano-layered structure Or a nano composite structure. The multilayer film structure having high light transmittance, high hardness and color as described in claim 1, wherein the high hardness material is aluminum nitride, aluminum oxynitride, aluminum oxide, cerium oxide, cerium oxynitride, cerium nitride, 2 or 2 of the titanium dioxide, the color hard layer has a thickness of between 300 nm and 1200 nm, and the color hard layer has a hardness of between 10 GPa and 30 GPa, and the color hard layer of the film is visible. The refractive index ranges from 1.3 to 2.8. The multilayer film structure having high light transmittance, high hardness and color as claimed in claim 1, wherein the antireflection layer has a thickness of between 40 nm and 150 nm, and the antireflection layer has a hardness of 8 GPa to Between 18GPa. The multilayer film structure having high light transmittance, high hardness and color as claimed in claim 3, wherein the antireflection layer is made of aluminum nitride, aluminum oxynitride, aluminum oxide, hafnium oxide, hafnium oxynitride or tantalum nitride. One or a combination of titanium dioxide. The multilayer film structure having high light transmittance, high hardness and color as claimed in claim 3, wherein the nano-multilayer structure film has a visible light refractive index ranging from 1.5 to 2.3, and the nano composite structure film The visible light refractive index ranges from 1.3 to 2.8. The multilayer film structure having high light transmittance, high hardness and color as claimed in claim 1, wherein the thickness of the wave-eliminating layer is between 20 nm and 100 nm, and the hardness of the wave-eliminating layer is between 8 GPa and 18 GPa. The multilayer film structure having high light transmittance, high hardness and color as described in claim 6, wherein the material of the wave absorbing layer is aluminum nitride, aluminum oxynitride, aluminum oxide, cerium oxide, cerium oxynitride or cerium nitride. One or a combination of titanium dioxide. The multilayer film structure having high light transmittance, high hardness and color as claimed in claim 6, wherein the nano-multilayer structure film has a visible light refractive index ranging from 1.5 to 2.3, and the nano composite structure film The visible light refractive index ranges from 1.3 to 2.8. The multilayer film structure having high light transmittance, high hardness and color as described in claim 1, further comprising: a transparent substrate disposed on the wave absorbing layer, wherein the visible light of the transparent substrate has a refractive index ranging from 1.4 to Between 1.8.