TECHNOLOGY FOCUS - INORGANIC CHEMISTRY - Preparation: The manufacturing method of the nano-crystalline solar cell prototypical apparatus comprises (A) preparing raw materials by (a) choosing and treating transparent current-conducting electrode by choosing fluorine-doped tin oxide transparent current-conducting glass as electrode of the cell and cutting the glass by diamond cutting tool; anode electrode and counter electrode using current-conducting electrode glass with the same size; treating the surface by hot dilute sulfuric acid, and subjecting ultrasonic rinsing in acetone, ethanol, and de-ionized water solution; placing the treated electrode in vacuum dryer for use; (b) preparing titanium dioxide (TiO2) colloidal solution by using butyl titanate as precursor, absolute ethyl alcohol as solvent, hydrochloric acid as catalyst, and acetyl-acetone as complexing agent; the volume ratio of tetra-butyl titanate and other solvents in the colloidal solution is 0.1-0.5; (c) weighing certain amount of chloroplatinic acid and dissolving it in isopropyl alcohol to obtain pellucid transparent orange yellow solution, the concentration of which is 0.001-0.1 mole/l; (d) choosing iodine (I2)/tri-iodide ion (I3-) electrolyte system as electrolyte, that is, organic mixed solution of iodine simple substance or mono-valent ion compound of iodine element, and adding other organic additive to intensify cavity transmission ability of the electrolyte; mono-valent ion compound of iodine element is sodium iodide, potassium iodide, or lithium iodide; organic solvent is mixed solution of acetonitrile-carbonic allyl ester, mixed solution of acetonitrile-ethylene carbonate, or methoxyl acetonitrile; the additive is 4-tertiary butyl pyridine or N-tolimidazole, the concentration of iodine simple substance is 0.001-0.1 mole/l, concentration of mono-valent ion compound of iodine element is 0.1-1 mole/l, and concentration of I3- ion is generally 1-10 times of the concentration of I2 in the solution; (e) mercurochrome dye solution by firstly removing medical mercurochrome, that is, water content in the mercurochrome water solution and then dissolving the obtained mercurochrome deposit in absolute ethyl alcohol to obtain mercurochrome dye solution of sensitized TiO2 film layer, the concentration of mercurochrome ethanol solution is 0.0001-0.001 mole/l; (B) preparing nanometer porous photo-anode film: (a) dense TiO2 film by preparing dense TiO2 film on anode transparent current-conducting glass on high-speed glue evening stage by spin coating technology and placing it under high temperature to carry on heat treatment to obtain transparent TiO2 film; the rotational speed of the glue evening stage is 1000-6000 revolutions per minute and the heat treatment temperature is 450-550 degrees C; (b) preparing anode silver electrode (3) by printing commercialized silver slurry on anode transparent current-conducting glass prepared in step (a) by silk screen printer and carrying on heat treatment at 450-550 degrees C; (c) nanometer porous TiO2 thick film by firstly using dispersion method to disperse the commercialized TiO2 nanometer powder and coating the confected slurry on the dense TiO2 film by "powder doctoring" method for 5-20 times to obtain desired thickness; and lastly subjecting heat treatment to the film layer at 450-550 degrees C; (d) sensitization of mercurochrome dye by rapidly placing the porous film obtained in step (c) at 80-100 degrees C in mercurochrome dye sensitizing solution, standing it at room temperature for 8-36 hours, or standing it in baking oven under 70 degrees C for 1-8 hours, taking out the electrode, flushing it with ethanol for use; (C) preparing electrode by (a) preparing anode silver electrode by printing commercialized silver slurry on anode transparent current-conducting glass by silk screen printer, the shape and manufacturing technology of the silver electrode being the same as those of the anode silver electrode; (b) preparing platinum catalyzing layer by coating the prepared chloroplatinic acid solution on the anode transparent current-conducting glass by spin coating technology and high-speed glue evening stage and placing it under high temperature to carry on heat treatment and obtain even platinum catalyzing layer; the rotational speed of the glue evening stage is 1000-6000 revolutions per minute, the heat treatment temperature is 380-500 degrees C, and the coating time is 1-10 times; (c) electrode perforation by using high-speed diamond drilling head to drill hole on the electrode with diameter size of 3-5 mm, silver slurry electrode at the edge and left side or right side of the hole and middle silver electrode being 1-5 mm; (D) electrolyte injection and cell encapsulation by (a) initial encapsulation by carrying on initial encapsulation of cell by high temperature hot-melt property of DuPont Surlyn hot melt film, cutting the hot-melt film into bar with width of 3-5 mm and the thickness of 40-100 mu m, covering it on the silver electrode, and covering the counter electrode, clamping, and fixing by iron clamp, placing it in baking oven to be bake at 80-150 degrees C for 2-60 minutes; (b) electrolyte injection by taking out the initially encapsulated cell, lowering the temperature to room temperature, injecting the confected electrolyte by drip pipe along the small hole on the counter electrode, and standing for 2-12 hours to fully disperse the electrolyte in the nanometer porous anode; (c) final encapsulation by encapsulating the small hole on the counter electrode by small blocks of glass and epoxy resin. Preferred Process: The preparation of nanometer porous thick film in (c) of step (B) for preparing nanometer porous photo-anode film comprises taking appropriate amount of P-25 type TiO2 powder, mixing it with de-ionized water and nitric acid (HNO3), and stirring it under water bath condition; removing the water content by rotational evaporator to obtain TiO2 nanometer powder absorbing HNO3 at its surface, adding appropriate amount of water, polyethylene glycol, and surface active agent, and grinding in agate mortar to obtain evenly dispersed TiO2 slurry, the concentration of slurry is 0.1-1 g TiO2 per ml, using plastic rubber belt as filling piece, coating the slurry on fluorine-doped tin dioxide (FTO) substrate by glass stick; drying water content of the film layer by electric hair dryer and carrying on a next coating. Preferred Parameters: The glue evening time in (a) of step (B) for preparing nanometer porous photo-anode film is 10-60 seconds. The width of the silver electrode in (b) of step (B) for preparing nanometer porous photo-anode film is 1-3 mm. The glue evening time of said platinum catalyzing layer in (b) of step (C) for preparing counter electrode is 10-60 seconds. There are 4 bar-shaped hot-melt films in (a) of step (D) for initial encapsulation. The film layer of TiO2 photo-anode film is dense and even and has a nanometer porous structure. The size of the TiO2 crystal grain is 20-30 nm. Preferred Conditions: The temperature of treating the surface by hot dilute sulfuric acid in step (a) of step (A) of preparing of raw materials is 60 degrees C. Preferred Composition: The volume ratio between acetonitrile and carbonic allyl ester or between acetonitrile and ethylene carbonate in organic solvent of (d) in step (A) for preparing of raw materials is 1:10-10:1.