Hybrid Solar Cell Is Expected to Achieve 95% Conversion Efficiency
Author: Source: Datetime: 2016-10-09 17:01:01
High-energy visible light is absorbed by a special organic coating, which produces pairs of triplet by the inorganic solar cells effectively absorb. Today's silicon solar cells can theoretically reach a maximum conversion efficiency of 33.7%; the rest of the incident light is depleted by the warming of the battery. Hoping to develop an organic thin-film battery that can be a waste of energy to be converted to electricity in the form of electricity. The hybrid PV cell approach, developed by Cavendish Laboratory, is expected to significantly reduce such a huge solar farm.
Conventional silicon solar power batteries essentially limit energy conversion efficiency because many of the absorbed energy are high energy light sources that are wasted due to overheating and are coated with organic coatings on conventional silicon solar cells , Hoping to dissipate high-energy input photons into two triplet excitons and convert them electronically to silicon.
By using ultrashort laser pulses to transform into organic and stupid, researchers used laser spectroscopy to characterize ultrafast processes at the organic / inorganic interface, and then followed each energy transition that occurred within one femtosecond, Energy photons do have two electrons, rather than one electron per photon. This confirms that the highest energy photons wasted during solar powered portable generator can also be used to convert the two exciton pairs into the concept that non-organic solar cells can be converted into two electrons.
At present also committed to the development of solar cells in addition to other applications. However, hope to find a new organic material, with a view to a perfect response to the traditional silicon solar cell needs. "Our goal is to develop a hybrid solar cell prototype that is more efficient than a conventional silicon cell," he said, and then further optimized the design to increase its conversion efficiency and meet industry needs such as ease of handling And more power-based three-phase inverter long-term and so on. At the same time, we are also committed to this new discovery of the energy conversion process for other technologies.
Unfortunately, the organic hole transport material and the gold counter electrode used in the solar power batteries obtained this efficiency are not only expensive, and it is reported that the organic hole transport material spiro-OMeTAD is 10 times as expensive as gold or platinum and requires high vacuum Equal energy consumption process. Therefore, how to achieve high efficiency and stability in low-cost all-solid-state mesoscopic solar cells is still the key to large-scale application of solar energy.
Most of today's solar panels are made of energy-intensive materials, such as silicon, which means that the energy required to produce such materials is high. In contrast, the production energy required to use the perovskite material is much lower. By using an intensive spray process, the group expects to be able to further reduce costs. And is applied to a printable mesoscopic solar power batteries having no hole transporting material. The method is characterized in that titanium dioxide nanocrystalline film, zirconium oxide insulating layer and carbon counter electrode layer are coated on a single conductive substrate by a layer-by-layer printing method, followed by filling the perovskite material. This key technology to achieve a low-cost mesoscopic solar power batteries and continuous production process the perfect combination.
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