Preparation method of solar thin film material copper zinc tin sulfur powder
A solar thin film, copper-zinc-tin-sulfur technology, which is applied in semiconductor devices, final product manufacturing, sustainable manufacturing/processing, etc., can solve the problems of complex process, difficult to accurately control element composition, and high preparation cost, and achieve simple process flow, The effect of convenient and easy preparation and low product cost
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Embodiment 1
[0023] Mix copper powder, zinc sulfide, tin oxide, and sulfur at a molar ratio of 2:1:1:4.2 thoroughly, add an additive solution prepared by 1% polyvinyl butyral and absolute ethanol, and stir ultrasonically. Granulate and send to drying box to dry under the protection of argon. Then put the dried mixture into the reaction furnace, pass in argon, sinter at 400°C in the low temperature zone, 500°C in the middle temperature zone, and 1100°C in the high temperature zone, sinter for 1 hour, 2 hours and 2 hours respectively, and keep warm for 3 hours After the obtained sample is cooled, take it out and grind it until the particle size is less than 100 microns, and obtain copper-zinc-tin-sulfur powder materials of different particle sizes after vibrating sieve classification.
Embodiment 2
[0025] Mix copper powder, zinc sulfide, tin oxide, and sulfur in a molar ratio of 2: 1: 1: 4.5, and add an auxiliary solution prepared by 3% polyvinyl butyral and absolute ethanol, and stir ultrasonically. Granulate and send to drying box to dry under the protection of argon. Then put the dried mixture into the reaction furnace, pass in argon, sinter at 350°C in the low temperature zone, 850°C in the middle temperature zone, and 1000°C in the high temperature zone, sinter for 1 hour, 2 hours and 3 hours respectively, and keep warm for 6 hours After the obtained sample is cooled, take it out and grind it until the particle size is less than 100 microns, and classify it with a vibrating sieve to obtain copper-zinc-tin-sulfur powder materials with different particle sizes.
Embodiment 3
[0027] Mix copper powder, zinc sulfide, tin oxide, and sulfur in a molar ratio of 2:1:1:5, and add an additive solution prepared by 5% polyvinyl butyral and absolute ethanol, and stir ultrasonically. Granulate and send to drying box to dry under the protection of argon. Then put the dried mixture into the reaction furnace, feed nitrogen, sinter the low-temperature zone at 450°C, the medium-temperature zone at 700°C, and the high-temperature zone at 1050°C, respectively sinter for 1 hour, 1.5 hours and 2.5 hours, and then keep the temperature for 8 hours. After the obtained sample is cooled, it is taken out and ground until the particle size is less than 100 microns, and the copper-zinc-tin-sulfur powder material of different particle sizes is obtained after vibrating sieve classification.
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