Perovskite Solar - Page 65

Researchers from the University of Rome Tor Vergata's Centre for Hybrid and Organic Solar Energy (CHOSE), IMEC and EPFL have reported on a solar module with an efficiency of 20.72%, based on tin oxide (SnO₂) as an electron transport layer, an organometal halide perovskite layer, organic halide salt phenethylammonium iodide (PEAI) as a passivation agent, and Spiro-OMeTAD as the hole transport layer (HTL).

The international research team presented its low-temperature planar perovskite module with an n'i'p architecture, an aperture area of 11'cm², and a geometrical fill factor of 91%.

Chinese company Golden Solar has signed an agreement with two partners to pursue commercial production of perovskite tandem solar cells with 'more than 28%' conversion efficiency.

The Chinese company, which has extremely varied areas of business, is focusing on HJT manufacturing and will combine its solar wafer and HJT technology with the HJT expertise of solar manufacturer Gold Stone (Fujian) Energy Co. Ltd. It will also draw upon the perovskite and tandem knowledge of the National University of Singapore's Solar Energy Research Institute of Singapore.

Researchers from the University of Toronto and their international collaborators have leveraged quantum mechanics to optimize the active layer within an inverted perovskite solar cell.

"Perovskite crystals are made from a liquid ink and coated onto surfaces using technology that is already well-established in industry such as roll-to-roll printing," says Hao Chen, a post-doctoral researcher in Sargent's lab and one of four co-lead authors of a new paper published in Nature Photonics. "Because of this, perovskite solar cells have the potential to be mass produced at much lower energy cost than silicon. The challenge is that right now perovskite solar cells lag traditional silicon cells in stability. In this study, we aimed to close that gap."

Researchers from Soochow University, Xi'an Jiaotong-Liverpool University and Egypt's National Research Centre have developed a novel approach for making an all-weather solar cell that is triggered by both sunlight and falling raindrops.

They designed the solar cell by integrating a triboelectric nanogenerator (TENG) and perovskite solar cells to harvest raindrop energy and solar energy efficiently to provide a distributed energy source.

Japan-based EneCoat Technologies, developer of materials for perovskite solar cells, has received an investment from SPARX Group's Mirai Creation Fund III.

EneCoat intends to use this fundraising round to strengthen its R&D capabilities to help realize carbon neutrality. Its efforts include installing pilot equipment for next-gen perovskite solar cells and accelerating the development of IoT sensors and wearable devices.

Researchers at the UCLA Samueli School of Engineering, along with colleagues from five other universities around the world, have discovered a major reason why perovskite solar cells degrade in sunlight, causing their performance to suffer over time.

The team demonstrated a simple manufacturing adjustment to fix the cause of the degradation, addressing one of the biggest hurdles toward the commercialization of the perovskite-based solar cell technology.

Researchers from solar manufacturer Hanwha Q CELLS and research institute Helmholtz-Zentrum Berlin (HZB) have announced a power conversion efficiency of 28.7% for a two-terminal perovskite-silicon tandem solar cell.

The device is based on a silicon bottom cell relying on Hanwha Q CELLS' monocrystalline Q.antum half cell technology and a perovskite-based top cell.

A new study by HZB, Delft University of Technology, University of Potsdam, Yale University, Czech Academy of Sciences, NIST, University of Würzburg, Nihon University, Oregon State University, University of Warwick, Drexel University and University of California Irvine shows how terahertz (TRTS) and microwave spectroscopy (TRMC) can be used to reliably determine the mobility and lifetime of the charge carriers in semiconducting materials.

Using these measurement data it is possible to predict the potential efficiency of the solar cell in advance and to classify the losses in the finished cell.

An international research group has designed a semi-transparent perovskite solar cell that reportedly shows an improved open-circuit voltage and fill factor thanks to plasmonic enhancement.

The technique is based on the enhancement of the cell's electromagnetic field through metal nanostructures, which improves the device's low optical absorption in the visible spectrum. The research team designed the tech with applications in building-integrated photovoltaics (BIPV) in mind, but it can also be suitable for automotive and smart glasses.

Researchers from France's Institut Photovoltaïque d'Île-de-France (IPVF), EDF R&D and C2N have fabricated a mini perovskite solar module, via deposition of tin oxide as an electron extraction layer using chemical bath deposition (CBD), a low-cost and solution-based fabrication process.

Using this simple low-temperature deposition method, highly homogeneous SnO₂ films can reportedly be made in a reproducible manner. In addition, the perovskite layer was prepared by sequentially slot-die coating on top of the n-type contact. The symbiosis of these two industrially relevant deposition techniques can allow for the growth of high-quality dense perovskite layers with large grains.