Comparison of advantages and disadvantages of perovskite cells
Advantages:
1. High photoelectric conversion efficiency: The perovskite film of the light-absorbing layer of the perovskite cell has a wider band gap than crystalline silicon, can absorb short-wave visible light, and has a higher photoelectric conversion efficiency. The theoretical limit efficiency of a single-junction perovskite cell can reach 31%, and can reach more than 44% in the stacking mode, which is much higher than the 29.4% of crystalline silicon cells.
2. Low raw material requirements: Perovskite cells have low requirements for the purity of raw materials. A purity of about 90% can produce a cell with an efficiency of more than 20%, while crystalline silicon cells require 99.9999% high-purity materials.
3. Simple manufacturing process: The manufacturing process of perovskite cells is simple and the temperature is low, about 100°C, while crystalline silicon cells require a high temperature of more than 600°C. In addition, the production process of perovskite cells has low energy consumption, and the energy consumption per watt is only 1/10 of that of crystalline silicon cells.
4. Low cost: The production cost of perovskite batteries is low. 5. Transparent flexible components can be prepared: Perovskite batteries can be used to prepare semi-transparent flexible battery components by using transparent flexible substrates, which are suitable for unconventional applications such as glass curtain walls and wearable products.
However, perovskite batteries also have some disadvantages:
1. Unstable crystal structure: The crystal structure of perovskite batteries is easily affected by factors such as light and temperature changes, resulting in performance degradation.
2. Poor thermal stability: Perovskite batteries are prone to degradation under high temperature conditions, affecting battery life. 3. Short life: The life of perovskite batteries is relatively short at present and has not yet met the requirements for commercial application.
4. Contains toxic substances: Perovskite batteries contain toxic substances such as lead, which to a certain extent limits their wide application.
5. The large-area preparation process is immature: The large-area preparation process of perovskite batteries is not yet mature, and commercial application still needs time.
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