After 85, "Chaser", Professor Tan Hairen of Nanjing University, and then send science again!

Slow nuclear and slow volatilization of the slow formation and solvents of the wet perxolia ore film can be extended by extended solution to extend the crystallization of perovskite crystals. (Figure 1).The author adds AAH to a mixed SN-PB metal halide permral anterior body to cause interaction between ingredients, including lead iodide, iodide, iodide nails, and solvents (second-schrobia (two-ameter (two-ameter (two-ameterKidamide and second metamorphosis) .In particular, the AAH salt and di metamimamamide effectively slowed down the release of the solvents during the process of perovskite coating .Therefore, Before observing the crystallization, the time window for forming a uniformly large area of perovskite film during the coating process is extended from 10 seconds to 100 seconds .

Figure 1. The uniformity of PB-SN perovskite film and solar cells coated with blades

Figure 2. The mechanism of extended processing window

[Pleeptication of buried perovskite interface]

The light -absorbing perovskite film usually has two contact points in the device -its top and bottom surface (buried in the interface).The quality of the interface is equally important as the uniformity of the perovskite film .When the perovskite film is coated on the substrate, as the solvent evaporates, the crystals from top to bottom in the film can easily cause defects in the interface.This can lead to charge reorganization -a process of energy waste.The author observes the distribution of AAH salt from the top of the perovskite layer to the bottom.The bottom AAH+ions passivated the interface defect and reduced the charge capture, thereby minimizing the composite loss at the buried interface.In the end, uniform high-quality perovskite film and passivation of the synergies buried into the interface promoted the improvement of the battery performance of the SN-PB low gap peroxic ore. .

Figure 3. The photoelectric performance of the lead-tin oligozoic film and solar cells coated with blades

Then, the author uses PB-SN NBG (~ 1.25EV) perovskite and AAH, Use a complete scalable processing technology to manufacture single -chip all -piece all -ingot orelin series solar cells.The blade coated full olty ore ore series of solar batteries consist of about 380 nm thick WBG lymi ore and about 1000 NM thick NBG perovskite layer (Figure 4A), showing the highest efficiency of 26.8%(Pore diameter area is 1.05 cm 2) VOC is 2.15 V, JSC is 15.5 ma cm−2, FF is 80.5% (Figure 4B, C).In addition, for the best PCE eight -child battery module with a battery width of 5.625 mm, the author achieved a narrow width of 96.1%high GFF and 220 μm (Figure 4d and E, illustration). PCE under the reverse scanning module is 24.9%, VOC is 17.2 V, JSC is 1.85 mA CM−2, and FF is 78.2% (Figure 4E).Even if the pore area increases to 64 CM 2, the uniformity of AAH perovskite film has maintained a 23.8% high efficiency (Figure 4F).When the PB-SN perovskite (FAC) that does not contain MA (FAC) is used, the operation stability of the device is further increased to T80 = 656 hours (Figure 4G).

Figure 4. The photovoltaic performance of all perovskite connecting solar cells and components

[meaning and influence]

Research on the top battery of the top part of the peroxic ore mining in large areasSexuality and help form a large -scale high -quality perovskite film in the process of coating.This article pointed out that the certification efficiency of large -scale all -in -layer solar components is 24.5%, and the pore diameter area is 20.25 cm2, which is more than the efficiency (22.4%) of the solar component of the same size single.This high -efficiency rate provides a broad design space for oscorion technology .However, the reliability of module is a focus point for future commercialization .They observed that compared with modules based on naphoids and methamine -based low -band oscorcular battery batteries, the encapsulating module with encapsulation has better operating stability, andWet and humid stability and thermal cycle stability.Pethan in perovskite is easy to volatilize under severe stress such as high temperature and light, causing perovskite to break down.This should can guide the improvement of the stability of the oscomority series module.

The research results of this article Support key optimization of large -scale uniform high -quality lymph -lying film increase engineering and coating technology .Further increase the efficiency of a large -scale full -area olty ore connected solar cell component to the expected actual limit of 34%is the next important goal.In addition, the maximum reduction of the annual degradation of oligozoic ingot materials in the actual outdoor environment is a key factor that determines the commercial capacity of all perception components.Indeed, compared with the 25 -year life of mainstream crystal silicon photovoltaic, there is still a lot of room for improvement.

Source: High molecular science frontier

Where are you lets leave a message below!