Solar Cells

Scientists at Germany’s Fraunhofer ISE developed a model to simulate different setups for screen printing in solar cell metallization. The model provides a comparable ‘screen utility index’ value that can predict the usefulness of different architectures in the printing equipment in relation to the properties of a given silver paste. The approach, says Fraunhofer, will assist the PV industry in reducing the amounts of silver needed in silicon cell manufacturing.

The US Solar Energy Industry Association in late 2020 launched a campaign against forced labor and said it was “strongly encouraging” member companies to adjust their supply chains by June. Here is what will likely happen.

According to JinkoSolar vice president Dany Qian, PV panel prices rose significantly since the second quarter of last year due to an increasing shortage of polysilicon, glass, silver, and module frames. She also stated that rushing demand cannot stop prices from rising for at least the next six months or longer, until sufficient capacity ramps up.

Goodwe and Irico have both announced rising revenue and profits for the fiscal year 2020. Zhonghuan Semiconductor intends to produce thinner wafers to respond to increasing polyisilicon prices. The southwestern province of Yunnan wants to add another 15 GW of clean energy to its power generation mix.

A numerical study by researchers at India’s Chitkara University has shown enhanced charge extraction in metal-perovskite-metal back-contact solar cell structure through electrostatic doping. The proposed design yielded a 59.4% improvement in power conversion efficiency over previously reported structures.

The mini panel has a surface of 10 cm². It was built with a manufacturing technique that is claimed to be compatible with the integration of perovskite into heterojunction silicon solar cells in tandem architecture.

The US researchers claim to have achieved the remarkable result by adding a special conductive layer of tin dioxide bonded between the conductive layer and the perovskite material. They also improved the perovskite layer special additives that do not alter the material’s bandgap.

According to German scientists, the quality of the photoluminescence quantum yield of the perovskite layers can be reliably and precisely determined for the first time. It shows that the promising material has more potential for optimization than previously assumed.

Dutch scientist Bonna Newmann spoke with pv magazine about the present and future of vehicle-integrated PV from a technological and economic perspective. Solar panels installed on cars could have a payback time of only three or four years and ensure 10,000 km of pure PV-generated road travel per year, she said. Furthermore, if you live in a sunny place, you can drive an electric car with solar panels for weeks during summertime, without the need for recharging, she pointed out.

Jinko Solar secured another 338 million square meters of PV glass from Flat Glass. Tongwei and Trina Solar have left the monocrystalline wafer production joint venture they set up with Longi.