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University of Texas at Austin chemists led by Zhu in semiconductor nanocrystals, BN-VF707 , quantum dots in the new study, the efficiency of traditional solar cells can increase the current limit of 30% over 60%.

Scientists have found a way to capture the high energy of the sun and solar cells in heat, but lost.

Today, the most efficient use of silicon battery is about 31%. This is because the solar cell is too high, a lot of energy from the sun when they have not reached the solar panels into usable electric energy. This energy, the so-called “hot electrons form” exists when the heating is lost.

If high energy of sunlight, or more precisely the hot electron can capture solar energy conversion efficiency of electrical energy can theoretically be increased to reach 66%.

The first problem, several research teams suggested that the semiconductor nanocrystals can slow the cooling of hot electrons. A team of researchers from the University of Chicago Science, 2008 academic year at the show, unambiguously, it is true colloidal semiconductor nanocrystals.

Zhu team found the next critical step: how to use these electronic.

They found photos of hot electrons can be transferred PbSe nanocrystals with a wide range of titanium dioxide used in the electronic conductor.

“If we take the hot electrons, we can work with them,” said Zhu. “This model of heat transfer of electrons set up a highly efficient hot carrier solar cells, it is not just a theoretical concept, but an opportunity to experiment. ”

The researchers used a lead selenide quantum dots, Sony NP-BG1 Charger , but Zhu said that their method of quantum dots made of other materials also play a role.

He warned that this is a scientific approach. In the solar cell efficiency of 66% before the need for more science and engineering.

Zhu is resolved, the power wire connected to a scientific problem.

“If we take the electron from solar cells or heat so quickly, we will also lose energy heating the wire,” said Zhu. “Our next goal is to adjust the chemical composition of the wire interface, so allow us to reduce this energy loss booster. We want to capture more energy from sunlight. This is the final solar cell.

“Fossil fuels enormous cost of the environment,” said Zhu: “We have no reason not to use 100% within 50 years of solar energy.