Preparation method of graphene oxide and rare earth complex composite ultraviolet enhancement film

[0028] Preparation of GOSs-rare earth complex fluorescent materials:

[0029] (1) Weigh the reaction raw materials according to the mass corresponding to the molar ratio of EuCl3·6H2O:2'2-bipyridyl:thienoyltrifluoroacetone=1:1:3;

[0030] (2) Put EuCl3·6H2O and GOSs in ethanol, mix and sonicate to obtain suspension A;

[0031] (3) Dissolving 2'2-bipyridine and thienoyltrifluoroacetone in ethanol to obtain solution B;

[0032] (4) Add suspension A and solution B into a 250ml single-necked bottle;

[0033] (5) Add an appropriate amount of NaOH aqueous solution to adjust the pH to 6-7;

[0034] (6) Heat at 60°C, stir, and react for 3 hours;

[0035] (7) Turn off the power, stand at room temperature for 12 hours, then filter with suction, wash with ethanol several times, and collect the product;

[0036] (8) Dry in an oven at 70°C (normal pressure), and collect the product.

[0038] Preparation of composite reinforced film:

[0039] (1) Weigh PVA124 into a glass bottle, add distilled water, and let stand for 2 hours (to make PVA swell);

[0040] (2) Add a stirrer, heat and stir at 85°C until completely dissolved;

[0041] (3) Add absolute ethanol, heat and stir at 65°C until completely dissolved;

[0042] (4) Weigh an appropriate amount of complex and add it to the above PVA solution;

[0043] (5) Heat and stir at 40°C for 24 hours to form a mixed luminescent glue;

[0044] (6) Spin-coating or casting to form a film as required;

[0045] (7) Oven drying at 40°C (normal pressure) to form a film.

[0047] Preparation of UV-enhanced linear array CCD:

[0048] (1) Cast the prepared luminescent mixture into the photosensitive tank of the linear array CCD;

[0049] (2) Place the CCD poured into the luminescent compound flatly in a drying oven;

[0050] (3) Drying in a 40°C oven under normal pressure;

[0051] (4) Device packaging.