Coating dispersant composition, method for producing coating dispersant composition, solar cell, and method for manufacturing solar cell
A technology of solar cells and cloth diffusing agents, which is applied in the manufacturing of final products, sustainable manufacturing/processing, semiconductor/solid-state device manufacturing, etc., can solve the problems of difficult and stable storage of liquids, unfavorable costs, etc. long effect
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Embodiment 1
[0140] (Examples 1 to 18, Comparative Example 1)
[0141] First, mix and dissolve isopropanol, phosphorus pentoxide, and water (1). After that, water (2) was further added and mixed, and titanium tetraisopropoxide was mixed to prepare a spreading agent composition for coating.
[0142] In addition, the quantity of each component used in each Example is as shown in following Table 1. In addition, in each Example, the concentration of water and the timing of adding water were adjusted by changing the amounts of water (1) and water (2).
[0143] (evaluation of stability over time)
[0144] The coating diffusing agent composition obtained in each Example was stored under high-temperature conditions of 60° C., and the time until a precipitate (titanium hydroxide) was generated was evaluated. Table 1 shows the results.
[0145] In addition, the time until a precipitate generate|occur|produces was evaluated as the time for maintaining transparency of a liquid (coating-diffusion a...
Embodiment 19～22、 comparative example 2～5
[0154] For the coating diffusing agent composition prepared in the same manner as in Example 3 or Comparative Example 1, the performance of the coating diffusing agent composition when stored at any one of temperature conditions of 40°C, 25°C, 5°C, and -5°C was evaluated. Stability over time. Table 2 shows the results. In addition, the evaluation of temporal stability was performed by the method similar to Examples 1-18 and the comparative example 1 except storage temperature.
[0155]
[0156] As shown in Table 2, the following results were obtained: in the coating diffusing agent composition and the coating diffusing agent composition containing no water having a composition weight of 0.15 g of water (2), even at any one of the above-mentioned storage temperatures, There is a difference of about 1.5 times or more in the time to maintain transparency.
[0157] Therefore, it was confirmed that in the coating diffusing agent composition of the present invention, even in th...
Embodiment 23～29
[0159] A spreading agent composition for coating was prepared in the same manner as in Example 19, except that the aqueous solution of the inorganic acid, organic acid, inorganic base, and organic base shown in Table 3 was added instead of water (2). About the obtained coating-diffusion agent composition, it evaluated similarly to Example 19 for the temporal stability regarding the generation|occurrence|production of a precipitate under 40 degreeC storage conditions. Table 3 shows the results. In addition, in Table 3, the result of Example 19 and the comparative example 2 are also described together for reference.
[0160]
[0161] In Table 3, "TMAH" means tetramethylammonium hydroxide, and "MEA" means monoethanolammonium.
[0162] As shown in Table 3, it can be confirmed that by adding water, or an aqueous solution of an inorganic acid, an organic acid, an inorganic base or an organic base, the time for keeping the liquid transparent can be extended, and it shows that the...
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