37 results about "Tin(II) oxide" patented technology

The invention discloses efficient low-warpage crystalline silicon solar cell conducive aluminium paste. The conducive aluminium paste comprises the components of aluminium powder, an organic carrier, at least one inorganic binder, and tin oxide doped conductive powder, wherein the tin oxide doped conductive powder is selected from at least one of antimony doped tin oxide (ATO), indium doped tin oxide (ITO), fluorine doped tin oxide (FTO), wolfram doped tin oxide (WTO), or aluminium doped tin oxide (TOA). The doped tin oxide conductive powder is uniformly dispersed in the aluminium paste; the doped tin oxide conductive powder becomes an out-phase stress releasing center in a sintered aluminium conducive layer; the warpage of a cell piece can be reduced; the doped tin oxide conductive powder is good in the conductivity; the doped tin oxide conductive powder is introduced as the out-phase stress releasing center, however, the conductivity of the aluminium conducive layer is not influenced; and the warpage of the silicon-based solar cell piece is reduced, and the photoelectric conversion efficiency of the solar cell is ensued as well.

The invention discloses a metal-doped tin oxide transparent dispersion and its preparation method. The dispersion contains metal-doped tin oxide, a surfactant and a solvent. The solid content is 5-40wt%; particle size distribution is narrow, and particle size of particles is 5-30nm; and the dispersion is in a stable transparent state. The method comprises the following steps: 1) tin salt and salt of metal A are dissolved in acid to form a mixed salt solution; aqueous alkali is added into the mixed salt solution to generate a hydroxide precipitate; 2) the hydroxide is dispersed in an organic solvent, the surfactant is added to carry out reflux so as to obtain modifier-coated hydroxide; 3) the modifier-coated hydroxide is dispersed in water to obtain a hydroxide dispersion liquid, and the dispersion liquid reacts by a hydrothermal method; and 4) a product of the reaction by the hydrothermal method is dispersed in an organic solvent or water so as to obtain the metal-doped tin oxide dispersion. Synthesized raw materials are easily available, price is low, and production cost is low. At low hydrothermal temperature and pressure, crystal transfer of a nano-powder is realized. The prepared particles have good conductivity and dispersibility, and the dispersion has good stability and transparency.

The invention provides a hydrothermal synthesis method of zinc-doped tin oxide with a hollow cubic structure, comprising the following steps: dropwise adding a mixed aqueous solution of SnCl4 and Zn(NO3)2 to a NaOH aqueous solution with a certain concentration, wherein, the volume ratio of the mixed aqueous solution of SnCl4 and Zn(NO3)2 to the NaOH aqueous solution is 1:3-1:15, the concentrationof SnCl4 is 0.1094-0.1144mol / L, the concentration of Zn(NO3)2.6H2O is 0.0106-0.0156mol / L, and the concentration of NaOH is 1.875mol / L; evenly stirring and transferring the mixed solution to a hydrothermal reaction kettle so that the filling degree reaches 80%; carrying out isothermal reaction at the temperature of 180-190 DEG C for 25 hours; and finally centrifuging, washing and drying the obtained reaction product to obtain the zinc-doped tin oxide. The hydrothermal synthesis method has simple process and easy operation; and the synthesized zinc-doped tin oxide particles have controllable size and high purity, and the obtained product has excellent electrical property.

The invention, which belongs to the technical field of functional material preparation, in particular relates to a preparation method of conductive powder with antimony-doped zinc oxide and stannic oxide coating monox. Pure silica powder is put into a beaker containing distilled water with the pH valued adjusted by hydrochloric acid and stirring is carried out to obtain a monox suspension; mixed liquid with Zn<2+>, Sn<4+> and Sb<3+> and an alkaline solution are controlled by a peristaltic pump to be dripped into the monox suspension simultaneously, and after dripping completion of the mixed liquid, heating and stirring are carried out continuously; ageing, suction filtration, and washing are carried out successively, an obtained precursor is dried, and then the dried precursor is placed ina muffle furnace to carry out heat treatment, so that conductive powder is obtained. The conductive powder not only has the conductive property but also has chemical stability not possessed by materials like metal and has the good antistatic performance; and the coverage rate and whiteness are high. The conductive power serving as a functional filler applied to a preparation process like of a plastic, coating, ceramic material has a wide application range.