introduction
In recent years, inorganic perovskite-based solar cells based on CsPbBr3 have received extensive attention from researchers due to their excellent thermal and chemical stability. The study found that compared with organic-inorganic hybrid PSC, fully inorganic CsPbBr3 solar cells can be relatively It is stable in the air environment with humidity above 90%. The developed inorganic PSC can only convert solar energy into electrical energy, but it cannot absorb and utilize other energy such as water vapor in the surrounding environment. Water evaporation is a key process to achieve water circulation. During this period, huge water vapor energy is released. How to realize the multi-energy integration application of inorganic PSC is one of the forefront scientific problems in current photovoltaic research field without increasing the cost of the battery, especially making the PSC device and steam 'For 'friends' is the biggest problem in achieving maximum energy collection.
Achievements
Recently, Jinan University Tang Qun Committee Professor (Corresponding author) designed a carbon-based, hole-free, all-inorganic PSC device that uses carbon electrodes to subtly implement devices that simultaneously capture solar energy and water vapor energy. The basic principle is: In solar illumination The carbon electrode can extract the photogenerated holes generated by CsPbBr3 to achieve the effective separation of electron-hole pairs. In the high-humidity environment, the carbon electrode and the water vapor effect between the water vapor generate additional voltage and current to realize the water vapor induction. Power generation. By optimizing the energy level structure of the battery and the surface structure of the carbon electrode, the fully inorganic PSC achieves a photoelectric conversion efficiency of 9.43% under standard sunlight conditions, and at the same time can obtain 0.35 V voltage and 0.45 μA at 80% relative humidity. Current. Since the inorganic perovskite CsPbBr3 has excellent stability, the battery can still maintain very excellent stability under the humidity, providing new ideas for the development of multi-energy integrated photovoltaic cells. Related results with 'Carbon Electrode Tailored All-Inorganic Perovskite Solar Cells To Harvest Solar And Water-Stream Energies' Posted in Angewandte Chemie International Edition magazine.
