The best Solar Energy News

Exciting solar energy news continues to arrive.

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  • Solar power is becoming more affordable. The cost of solar panels has been declining steadily for years, and it is now more affordable than ever to install solar panels on your home or business. In fact, the U.S. Department of Energy estimates that the cost of solar will continue to decline by 50% by 2030.
  • Solar power is becoming more efficient. Solar panel technology is also improving rapidly, which means that solar panels are now able to generate more electricity from the same amount of sunlight. This is making solar power even more attractive as a viable source of energy.
  • Solar power is becoming more popular. The popularity of solar power is growing rapidly, as more and more people are looking for ways to reduce their reliance on fossil fuels. In the United States, the number of solar installations has increased by over 50% in the past five years.
  • Solar power is becoming more accessible. There are now a number of ways to get solar power, even if you don’t own your own home or business. For example, you can sign up for a solar lease or power purchase agreement, which allows you to use solar power without having to invest in the upfront costs of installation.

Technological breakthroughs happening in solar energy

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  • Perovskite solar cells. Perovskite solar cells are a new type of solar cell that is made from a material called perovskite. Perovskite solar cells are much cheaper to make than traditional silicon solar cells, and they can be made in a variety of shapes and sizes.
  • Multi-junction solar cells. Multi-junction solar cells are made from multiple layers of different materials, each of which absorbs a different wavelength of light. This allows multi-junction solar cells to capture more of the sun’s energy and convert it into electricity.
  • Concentrating solar-thermal power (CSP). CSP is a technology that uses mirrors or lenses to concentrate sunlight onto a small area. The concentrated sunlight is then used to heat a fluid, which can then be used to generate electricity. CSP is a very efficient way to generate electricity from solar energy, and it can be used to generate electricity even when the sun is not shining.
  • Solar-powered water desalination. Solar-powered water desalination is a technology that uses solar energy to desalinate seawater. This is a very important technology for areas that do not have access to fresh water.

Perovskite solar cells

Perovskite solar cells (PSCs) are a type of solar cell that uses a perovskite-structured compound as the light-harvesting active layer. Perovskite materials, such as methylammonium lead trihalide (CH3NH3PbI3), are cheap to produce and simple to manufacture. As a result, PSCs have the potential to be a low-cost, high-efficiency alternative to traditional silicon solar cells.

The name “perovskite” comes from the mineral calcium titanium oxide, which has the same crystal structure as the perovskite-structured compounds used in PSCs. The general formula for a perovskite is ABX3, where A is a monovalent cation, B is a divalent cation, and X is an anion. The most commonly studied perovskite absorbers for PSCs are methylammonium lead trihalide (CH3NH3PbI3) and formamidinium lead trihalide (H2NCHNH2PbI3).

PSCs work by absorbing sunlight and converting it into electricity. When sunlight hits a PSC, the photons excite electrons in the perovskite material. These excited electrons are then transported to the conduction band, where they can flow through an external circuit and generate electricity.

PSCs have a number of advantages over traditional silicon solar cells. First, they are much cheaper to produce. The cost of manufacturing a PSC is about 10% of the cost of manufacturing a silicon solar cell. Second, PSCs can be manufactured using simple, additive deposition techniques, such as printing. This makes them much easier to manufacture than silicon solar cells, which require a multi-step, high-temperature manufacturing process. Third, PSCs can be made in a variety of shapes and sizes, making them ideal for use in applications where space is limited, such as on rooftops or in windows.

However, PSCs also have some disadvantages. First, they are not as efficient as silicon solar cells. The best PSCs have an efficiency of about 25%, while the best silicon solar cells have an efficiency of about 26%. Second, PSCs are not as stable as silicon solar cells. They can degrade in sunlight and moisture, which limits their lifetime.

Despite these disadvantages, PSCs are a promising new technology for solar energy. They are cheap, easy to manufacture, and can be made in a variety of shapes and sizes. As the technology continues to develop, PSCs have the potential to become a major player in the solar energy market.

Here are some additional details about the advantages and disadvantages of perovskite solar cells:


  • Low cost
  • Simple manufacturing process
  • Variety of shapes and sizes
  • Potential for high efficiency


  • Not as efficient as silicon solar cells
  • Not as stable as silicon solar cells
  • Degrade in sunlight and moisture

Researchers are working to address the disadvantages of perovskite solar cells. One approach is to develop new perovskite materials that are more stable and efficient. Another approach is to develop new manufacturing processes that can improve the stability of perovskite solar cells.

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