A method for preparing zinc sulfide film by ultraviolet photochemical water bath deposition method
A technology of chemical water bath and ultraviolet light, which is applied in the field of zinc sulfide thin film preparation by ultraviolet photochemical water bath deposition method, can solve the problems of not suitable for solar cell technology, slow coating speed, limited application, etc., and achieve easy control, simple equipment, and material utilization rate high effect
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Embodiment 1
[0045] The present invention has used a kind of device in the process of preparing sulfide film, and the structure diagram of this device is shown in figure 1 , comprising a source solution supply device, a solution mixing device 122, an ultraviolet photochemical reaction device 135 and an ultraviolet light source system 141, the source solution supply device includes four mutually independent containers 111, 112, 113, 114, which are connected to the solution through pipelines respectively The mixing device 122 is communicated, and the liquid outlet of the solution mixing device 122 is communicated with the liquid inlet of the ultraviolet photochemical reaction device 135 through a pipeline, and the liquid outlet of the ultraviolet photochemical reaction device 135 is connected with the solution mixing device 122 through a return pipeline. The liquid inlet is connected, and the ultraviolet photochemical reaction device 135 is provided with a support 134 for placing the substrat...
Embodiment 2
[0048] A cadmium sulfide thin film was prepared using the device described in Example 1. The substrate is made of ordinary glass, soaked in acetone, ethanol and deionized water in sequence, cleaned by ultrasonic waves, and dried with compressed air for later use.
[0049] S1. Set the concentration to 2.0×10 -3 mol / L of CdSO 4 Solution, 1.0×10 -4 mol / L EDTA solution, 0.1 mol / L Na 2 S 2 o 3 solution and 5% dilute H 2 SO 4 The solutions are respectively stored in four independent containers of the source solution supply device, and the peristaltic pump is turned on so that the four source solutions are input according to the flow rates of 0.5L / min, 0.5L / min, 0.5L / min, and 0.05L / min respectively. In the solution mixing device, set the speed of the mixer to 1000rpm to fully mix the four solutions; at the same time, observe the readings of the pH sensor and adjust the dilute H 2 SO 4 The flow rate of the solution (5%) keeps the pH value of the mixed solution in the solution...
Embodiment 3
[0054] A cadmium sulfide thin film was prepared using the device described in Example 1. The substrate is made of glass coated with a CZTS absorbing layer, soaked in acetone, ethanol and deionized water in sequence, cleaned by ultrasonic waves, and dried with compressed air for later use.
[0055] S1. Set the concentration to 3.5×10 -3 mol / L of CdSO 4 Solution, 1.0×10 -4 mol / L EDTA solution, 0.15mol / L Na 2 S 2 o 3 solution and 5% dilute H 2 SO 4 The solutions are respectively stored in four independent containers of the source solution supply device, and the peristaltic pump is turned on so that the four source solutions are input according to the flow rates of 0.5L / min, 0.5L / min, 0.5L / min, and 0.05L / min respectively. In the solution mixing device, set the speed of the mixer to 1000rpm to fully mix the four solutions; at the same time, observe the readings of the pH sensor and adjust the dilute H 2 SO 4 The flow rate of the solution keeps the pH value of the mixed sol...
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