Polaris solar PV net news: recently, the Institute of electrical compound thin film solar cell research group in soda-lime glass preparation of ferroelectric-coupled semiconductor photovoltaic devices, by the Chinese Academy of Sciences, solar photovoltaic systems and wind power generation system for quality inspection Center for certification, the conversion efficiency can reach 11.3%.
Ferroelectric-semiconductor coupled Nano dipole photovoltaic devices, also known as solar cells, belong to the third generation solar cells. Unlike traditional PN junction is this photovoltaic devices are made with ferroelectric properties of Nano-particle matrix built within the poling electric field to generate an electric field and filled with Nano-semiconductor media between the dipole particles play the role of light-absorbing materials.
In light conditions, the photoexcited semiconductor absorption material to absorb visible light, these photo-generated carrier under the polarization field separation, and moving toward the poles of the batteries, external circuit for output power, thus completing two necessary current and voltage of the photovoltaic device output.
This new type of traditional PN junction devices and photovoltaic devices, an important difference is that these nanoparticles in thin films under the polarization effect of an external electric field will form a polarization field, allowing battery preparation preparation is completed, affected by the electric field deflects the output voltage of the battery, thus improving efficiency.
In 2013, the Group found this particular phenomenon, and published in Prog.Photovolt:Res.Appl. (“ACdSNano-dipoleSolarCell”, ProgressinPhotovoltaics:ResearchandApplications.DOI:10.1002/pip.2432)
According to reports, the team led by Liu Xiangxin researcher at Institute of electrical, using CdS nanoparticles as a piezoelectric material, CdTe as a light-absorbing material, not only proved by various micro-and macro-technologies Nano dipole mechanism of the solar cells and successfully to have this new type of photovoltaic conversion efficiency 11.3%. Compared to conventional PN junction solar cell Nano dipole of thin film solar cell manufacturing process is simple, only need to deposit a thin film.
The above work has been the Chinese Academy of Sciences, national natural science foundation of support.
Original title: electrician developed the first breakthrough by Chinese Academy of Sciences 11% of new ferroelectric-coupled semiconductor photovoltaic devices