Application of cu2mos4 two-dimensional crystal and saturable absorber device composed of it
A technology of two-dimensional crystals and absorbers, which is applied in the field of nonlinear optical materials and devices, can solve problems such as application limitations of multi-atomic layer graphene, achieve excellent saturated absorption characteristics, and reduce costs
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Embodiment 1
[0022] This example illustrates how to use chloroform as a dispersant to prepare Cu 2 MoS 4 A method for two-dimensional crystal organic dispersions as saturable absorbers.
[0023] (1) Take 0.171g CuCl 2 2H 2 O and 3.333g PVP were dissolved in 100mL of deionized water, stirred, and 10mL of NaOH solution with a concentration of 2mol / L and 10mL of sodium ascorbate solution with a concentration of 0.6mol / L were added dropwise in succession. After 1 hour, a turbid yellow liquid was obtained, and centrifuged at 6500rpm 5min, washed 3 times with ethanol and deionized water, and vacuum dried at 60°C for 5 hours to obtain Cu 2 O powder.
[0024] (2) Take 30mg Na 2 MoO 4 2H 2 O and 60 mg of thioacetamide were dissolved in 20 mL of ethylene glycol, and 20 mg of the Cu obtained in (1) was added 2 O powder, ultrasonicated in a water bath for 5 min, then transferred into a 50 mL reactor, and kept at 195 °C for 12 hours. Pour off the upper liquid, wash with deionized water and eth...
Embodiment 2
[0027] This example illustrates how to prepare Cu supported in the polymer polyvinyl alcohol (PVA) 2 MoS 4 Saturable absorbers in two-dimensional crystals.
[0028] (1) Take 0.171g CuCl 2 2H 2 O and 3.333g PVP were dissolved in 100mL of deionized water, stirred, and 10mL of NaOH solution with a concentration of 2mol / L and 10mL of sodium ascorbate solution with a concentration of 0.6mol / L were added dropwise in succession. After 1 hour, a turbid yellow liquid was obtained, and centrifuged at 6500rpm 5min, washed 3 times with ethanol and deionized water, and vacuum dried at 60°C for 5 hours to obtain Cu 2 O powder.
[0029] (2) Take 30mg Na 2 MoO 4 2H 2 O and 60 mg of thioacetamide were dissolved in 20 mL of ethylene glycol, and 20 mg of the Cu obtained in (1) was added 2 O powder, ultrasonicated in a water bath for 5 min, then transferred into a 50 mL reactor, and kept at 195 °C for 12 hours. Pour off the upper liquid, wash with deionized water and ethanol three times,...
Embodiment 3
[0034] This example illustrates how to prepare Cu supported in the polymer polymethylmethacrylate (PMMA) 2 MoS 4 Saturable absorbers in two-dimensional crystals.
[0035] (1) Take 0.171g CuCl 2 2H 2 O and 3.333g PVP were dissolved in 100mL of deionized water, stirred, and 10mL of NaOH solution with a concentration of 2mol / L and 10mL of sodium ascorbate solution with a concentration of 0.6mol / L were added dropwise in succession. After 1 hour, a turbid yellow liquid was obtained, and centrifuged at 6500rpm 5min, washed 3 times with ethanol and deionized water, and vacuum dried at 60°C for 5 hours to obtain Cu 2 O powder.
[0036] (2) Take 30mg Na2 MoO 4 2H 2 O and 60 mg of thioacetamide were dissolved in 20 mL of ethylene glycol, and 20 mg of the Cu obtained in (1) was added 2 O powder, ultrasonicated in a water bath for 5 min, then transferred into a 50 mL reactor, and kept at 195 °C for 12 hours. Pour off the upper liquid, wash with deionized water and ethanol three ti...
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