Solar Cell

A touch of chili peppers can spice up just about any dish – and maybe, it turns out, even solar cells. Researchers have now found that adding a sprinkle of capsaicin to a perovskite precursor can improve the efficiency of solar cells.

Silicon has long been the gold standard for solar cells, but it’s approaching its limit. Perovskite is emerging as a promising partner, and now engineers have achieved a new efficiency record for this kind of tandem solar cell – almost 30 percent.

One drawback of current perovskite solar technology is the instability of the cells, a problem which scientists have taken a step toward addressing with a new design that incorporates an old organic pigment to keep things in working order.

Perovskite solar cells are rapidly catching up to silicon in efficiency, but continue to lag behind in production speed. Now Stanford has developed a new method of making perovskite solar cells at up to 40 ft per minute – even faster than silicon.

A simple home test for breast cancer and a UV energy-harvesting window made of recycled materials are the big winners of this year’s James Dyson Awards. The annual competition encourages university students to develop innovative solutions to problems.

Perovskite solar is gaining much attention in solar cell research, but there are greener alternatives in the works. Scientists have just uncovered a new use for these materials, learning they can harvest energy from indoor lighting with high efficiency.

In summer months sunlight comes with an unwanted side order of heat. Now, researchers have developed windows that can change color automatically when heated by sunlight, to keep buildings cool – and to top it off, they’re solar panels as well.

New ultrathin solar cells boast a few advantages over others of their type. They're more efficient, made using more common elements, and can be inkjet-printed onto surfaces, making them light and flexible enough to power wearable electronics.

Researchers have developed a photovoltaic device that has an external quantum efficiency of 132 percent. This impossible-sounding feat was achieved using nanostructured black silicon, and could represent a major breakthrough for solar cells.

In a first, perovskite and organic solar cells have been tested in space. Not only did they perform well, but they’re much thinner and lighter than the silicon cells currently used and were even able to absorb diffuse light reflected back from Earth.

The ongoing COVID-19 pandemic has changed the world in many ways. Now, scientists have quantified an effect that lies a few links down the chain, finding that solar panels in certain cities have seen a boost in output, due to reduced air pollution.

A new type of hybrid solar energy converter can use energy from the Sun to create both electricity and steam. The device reportedly has high efficiency and runs at low cost, allowing industry to make use of a wider spectrum of solar energy.