Microwave-assisted solvothermal synthesis method of I-III-VI semiconductor material nano-powder
An auxiliary solvent, thermal synthesis technology, applied in nanotechnology, chemical instruments and methods, selenium/tellurium compounds, etc., can solve the problems of difficult to control product stoichiometric ratio, high reaction temperature, and high equipment requirements, and achieve strong reaction activation ability. , Reduce the reaction temperature, the effect of precise control of the stoichiometric ratio
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Embodiment 1
[0018] Embodiment 1: (CuIn 0.5 Ga 0.5 Se 2 Synthesis of powder)
[0019] with CuCl 2 2H 2 O, InCl 3 4H 2 O, GaCl 3 , Se powder as raw material, respectively weighed 0.17045g CuCl in molar ratio 1:0.5:0.5:2 2 2H 2 O, 0.146575 g InCl 3 4H 2 O, 0.08804 g GaCl 3 , 0.15792g Se powder, put into the microwave reactor, add ethylenediamine 20ml; close the reactor and put it into the microwave instrument, set the microwave parameters: heating power 400W, heating time 15min, reaction temperature 230℃, The reaction time is 120min. After the reaction is over, cool naturally to below 100°C, transfer the reaction solution from the microwave reactor to a centrifuge tube, carry out centrifugal washing and separation of the product, and wash it several times with distilled water and absolute ethanol. Dry in a vacuum oven at 80°C for 8 hours to obtain CuIn 0.5 Ga 0.5 Se 2 Nano powder. The sample was analyzed by XRD as pure CuIn 0.5 Ga 0.5 Se 2 , by SEM analysis, the powder pr...
Embodiment 2
[0020] Embodiment 2: (CuIn 0.7 Ga 0.3 Se 2 Synthesis of powder)
[0021] with CuCl 2 2H 2 O, InCl 3 4H 2 O, GaCl 3 , Se powder as raw material, respectively weighed 0.17045g CuCl according to the molar ratio of 1:0.3:0.7:2 2 2H 2 O, 0.087945 g InCl 3 4H 2 O, 0.123256 g GaCl 3, 0.15792g Se powder, put into the microwave reactor, add ethylenediamine 20ml; close the reactor and put it into the microwave instrument, set the microwave parameters: heating power 400W, heating time 15min, reaction temperature 230℃, The reaction time is 60min. After the reaction is over, cool naturally to below 100°C, transfer the reaction solution from the microwave reactor to a centrifuge tube, carry out centrifugal washing and separation of the product, and wash it several times with distilled water and absolute ethanol. Dry in a vacuum oven at 80°C for 8 hours to obtain CuIn 0.7 Ga 0.3 Se 2 Nano powder. The sample was analyzed by XRD as pure CuIn 0.3 Ga 0.7 Se 2 , by SEM analysi...
Embodiment 3
[0022] Embodiment 3: (CuInS 2 Synthesis of powder)
[0023] with CuCl 2 2H 2 O, InCl 3 4H 2 O, thiourea (CH 4 N 2 S) is raw material, weigh 0.17045g CuCl by molar ratio 1:1:2 2 2H 2 O, 0.29318g InCl 3 4H 2 O, 0.15224g thiourea, put into the microwave reactor, add 20ml of ethylene glycol; close the reactor and put it into the microwave instrument, set the microwave parameters: heating power 400W, heating time 10min, reaction temperature 190°C , The reaction time is 60min. After the reaction is over, cool naturally to below 100°C, transfer the reaction solution from the microwave reactor to a centrifuge tube, carry out centrifugal washing and separation of the product, and wash it several times with distilled water and absolute ethanol. Vacuum dry at 80°C for 8 hours in a vacuum oven to obtain CuInS 2 Nano powder. The sample was analyzed as CuInS by XRD 2 , according to SEM analysis, the powder particles are mainly composed of spherical and flake, and the particle ...
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