35 results about "Co sensitization" patented technology

The invention relates to a phenothiazine co-sensitizer and its preparation method and application. The co-sensitizer uses phenothiazine as a raw material and is prepared by suzuki coupling, borate esterification, bromination, hydrolysis and other reactions. The target co-sensitizer compound was obtained. The co-sensitizer of the present invention has a 2D-π-2A structure, with double-long carbon chain modified phenothiazine as the electron donor end, and a double carboxyl group as the electron acceptor end and simultaneously as an anchoring group. This structure has two A carboxyl group is used as an anchor group, so it will have good adsorption stability. After co-sensitization with porphyrin dye YD2‑O‑C8, it has a better effect, and the conversion efficiency of solar cell devices can be increased to 8.78%. The increase is about 18%. This structure is beneficial to fill the adsorption gap between the main porphyrin dyes, so that it can also play a role in reducing charge recombination on the basis of increasing the short-circuit current.

The invention discloses a method for preparing a sulfide quantum dot co-sensitization porous titanium dioxide photoelectrode by chemical bath co-deposition. The method comprises the following steps: preparing a TiO2 dense layer and a TiO2 porous film with a certain thickness on FTO (fluorine-doped tin oxide) glass; preparing two or more soluble metal salt solutions with a certain concentration, and sodium sulfide solution with a certain concentration; generating two or more sulfide quantum dots on the porous TiO2 film in situ by a chemical co-deposition method; and preparing the sulfide quantum dot co-sensitization porous titanium dioxide photoelectrode. The method is simple and quick; and when solar cells are prepared from the photoelectrode prepared according to the invention, the photoelectric conversion performance of the cells can be improved.

The invention discloses an indole-triphenylamine-arylmethylidenemalononitrile solar energy co-sensitization dye, a synthetic method and application thereof. The synthetic method comprises the following steps: adopting triphenylamine as the raw material, carrying out reaction on triphenylamine and POCl3 in a DMF solvent to compound and obtain an intermediate 4-(diphenyl amido) benzaldehyde; carrying out reaction on the 4-(diphenyl amido) benzaldehyde to obtain 4-bis (4-iodophenyl) aminobenzaldehyde; respectively carrying out reaction on the 4-bis (4-iodophenyl) aminobenzaldehyde and indole, 2-methylindole and 3-methylindole to obtain an indole-triphenylamine aldehyde derivative; respectively carrying out reaction on the indole-triphenylamine aldehyde derivative and cyanoacetic acid, malononitrile or 2-(3, 5, 5-trimethyl cyclohexene-2-octenylidene) malononitrile to obtain an indole-arylmethylidenemalononitrile-triphenylamine derivative. According to the synthetic method, the relevant optical property, photo-electro transition rate and co-sensitization efficiency of the product are primarily studied, and the foundation for developing the dye into a novel solar energy co-sensitization dye with excellent properties is laid.