Method for improving crystallinity and coverage of cadmium-based perovskite light-absorbing layer
A light-absorbing layer and perovskite technology, applied in photovoltaic power generation, electrical components, electrical solid-state devices, etc., can solve the problem that it is impossible to further improve the transport capacity of electrons and holes, and it is difficult to obtain crystallinity and coverage films , deficiency and other problems, to achieve the effect of improving photoelectric conversion efficiency, reducing dark current phenomenon, reducing quenching and recombination
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Embodiment 1
[0029] This embodiment provides a method for improving the crystallinity and coverage of the cadmium-based perovskite light-absorbing layer. The process flow chart is as follows figure 1 shown, from figure 1 It can be seen that the method includes the following steps:
[0030] Methylamine hydrochloride and cadmium chloride with a molar ratio of 2:1 are placed in N,N-dimethylformamide solution and mixed uniformly to obtain a cadmium-based perovskite precursor;
[0031] Use a pipette to pipette the cadmium-based perovskite precursor solution, and drop-coat it on the FTO conductive glass;
[0032] At 80°C, the cadmium-based perovskite precursor drop-coated on the FTO conductive glass was subjected to thermal annealing for 1h; and then continued at 130°C for 1h to obtain a cadmium-based perovskite film ( The thickness is 30-35 μm), that is, the cadmium-based perovskite light absorbing layer.
Embodiment 2
[0034] This embodiment provides a method for improving the crystallinity and coverage of the cadmium-based perovskite light-absorbing layer. The process flow chart is as follows figure 1 shown, from figure 1 It can be seen that the method includes the following steps:
[0035] Methylamine hydrochloride and cadmium chloride with a molar ratio of 2:1 are placed in N,N-dimethylformamide solution and mixed uniformly to obtain a cadmium-based perovskite precursor;
[0036] Use a pipette to pipette the cadmium-based perovskite precursor solution, and drop-coat it on the FTO conductive glass;
[0037] Then, at 80° C., the cadmium-based perovskite precursor solution drop-coated on the FTO conductive glass was subjected to thermal annealing treatment for 1 h to obtain a cadmium-based perovskite film (30-35 μm in thickness), that is, the cadmium-based calcium Titanium light absorbing layer.
Embodiment 3
[0039] This embodiment provides a method for improving the crystallinity and coverage of the cadmium-based perovskite light-absorbing layer. The process flow chart is as follows figure 1 shown, from figure 1 It can be seen that the method includes the following steps:
[0040] Methylamine hydrochloride and cadmium chloride with a molar ratio of 2:1 are placed in N,N-dimethylformamide solution and mixed uniformly to obtain a cadmium-based perovskite precursor;
[0041] Use a pipette to pipette the cadmium-based perovskite precursor solution, and drop-coat it on the FTO conductive glass;
[0042] Then, at 100° C., the cadmium-based perovskite precursor solution drop-coated on the FTO conductive glass was subjected to thermal annealing treatment for 1 h to obtain a cadmium-based perovskite film (30-35 μm in thickness), that is, the cadmium-based calcium Titanium light absorbing layer.
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Abstract
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