The Exploring Road of Flexible Solar Panel

Energy problem is a serious problem facing mankind. Inexhaustible solar energy is the darling of the era of clean energy. In the 1950s, solar cells  began to rise and develop. Now silicon-based solar cells are widely used. In addition, there are inorganic semiconductor thin film solar cells, dye-sensitized solar cells, perovskite solar cells, organic polymer solar cells, etc.

Different solar cells have different structures. For example, the organic photosensitive band of organic polymer solar cells is composed of a donor composed of p-type organic semiconductors (easy to give electrons) and a receptor composed of n-type semiconductors (easy to receive electrons), forming a very thin flexible active layer and generating photocurrent when the external circuit is connected. Perovskite solar cells are similar to organic polymer solar cells, with sandwich structure. The main difference is that the photosensitive layer is a perovskite structure composed of organic-inorganic hybrid.

Nowadays, solar charging  and energy storage system has been widely studied and applied in smart grid, house energy supply, commuter electric vehicles, household electronic products and portable wearable electronic devices. Flexibility and portability are two key indicators that must be considered when designing a new generation of wearable portable energy devices, especially solar charging and energy storage systems. Compared with traditional rigid devices, flexible thin-film solar cells greatly reduce the cost due to low-temperature preparation and easy panel installation technology. In addition, the combination of flexible thin-film photovoltaic system and energy storage system can not only realize the wireless charging of portable wearable devices, but also greatly improve the working time of the battery and realize more extensive and fine applications.

The integrated technology of flexible solar photovoltaic power generation and storage has obvious advantages such as strong adaptability of surface structure, easy bending, light weight and no additional installation cost. It can be flexibly applied to the outer surface of objects that need sunscreen and complex structure, such as clothing, outdoor equipment, buildings, means of transportation and electronic equipment. It can also be used as an integrated system of photovoltaic power generation and storage. Of course, the integrated technology of flexible solar photovoltaic power generation and storage still faces many problems, such as material preparation and stability, material life under complex conditions, photoelectric conversion efficiency, charge discharge efficiency, safety and cost. Click the link below to find more information about solar energy.

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