Everything About Perovskite Solar Cells

Perovskite solar cells are thin-film devices made with layers of materials, either coated or printed from liquid inks or vacuum-deposited. Perovskite, a crystal structure formed of hybrid organic-inorganic lead or tin halide-based materials, functions as the light-harvesting active layer. Its properties like broad absorption spectrum, magnetoresistance, superconductivity, long electron and hole transport distances, and long carrier separation lifetime, make it an advantageous technology in the solar power industry. 

The perovskite solar cells market is encountering significant growth, pushed by rising demand for this technology across different industries. In addition to this, according to the research report of Astute Analytica, the Global Perovskite Solar Cells Market is growing at a compound annual growth rate (CAGR) of 30.4% during the forecast period from 2023 to 2031.

The advantages of Perovskite Solar Cells are: -

Low manufacturing cost

The major advantage of perovskite solar cells is their low cost in both material and production. First of all, the raw materials of perovskite cells are large and easy to acquire the supply is not inflexible, and the price is lower than crystalline silicon raw materials.

High photoelectric conversion efficiency

The light absorption layer of perovskite solar cells known as perovskite film has a broader band gap than crystalline silicon and is capable of absorbing short-wavelength visible light. The absorbed photon energy is higher which means a greater photoelectric conversion rate.

Also, perovskite solar cell has good light diffusion performance, and high charge carrier mobility, and their electron and hole diffusion lengths can overreach 1000nm.

The perfect photo-generated carrier transport effects make the energy loss during photoelectric transformation low.

Low quality requirements of raw materials

The preparation of perovskite solar cells has a low need on the purity of raw materials and is not exposed to impurities. A cell with a purity of about 90% can be built with an efficiency of more than 20%.

Transparent flexible components manufacturing

The perovskite battery is capable of preparing translucent flexible battery components by utilizing a transparent flexible substrate and also thinning the perovskite film layer. It is used in unconventional new application fields like wearable products, glass curtain walls, and portable products.

The benefits of Perovskite Solar Cells: -

This technology has already gained great benefits in just 15 years, like the following ones:

  • The efficiency is near 30% for a single solar cell.
  • The excellent performance in harsh weather with a temperature coefficient of -0.13%/ºC.
  • It has low manufacturing costs.
  • Possibility for many applications.

How do the perovskite solar cells work?

Perovskite solar power is developed likewise to most photovoltaic technologies, under the photovoltaic effect. The photons in the solar light struck the perovskite absorber layer, freeing and exciting electrons, forming an electron-hole (e-h) pair. The electron then rolls towards the HTL, which later transports the electron to the conductor.

Excited electrons might fill holes rather than flow via the load as electricity, accounting for some of the perovskite solar power losses in a process which is known as surface recombination. 

Location: United States

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