Solar-Tectic granted a patent for tin-perovskite thin film tandem solar cells

Apr 11, 2017

Solar-Tectic has recently been granted a patent titled "Tin Perovskite/Silicon Thin-Film Tandem Solar Cell" as part of a "Tandem Series" of high efficiency and cost effective solar cells by Solar-Tectic, with the potential to surpass the efficiencies of thin-film solar cell technologies such as CdTe, CIGS, and a-Si and replace the current silicon technology.

The patent is reportedly the first for a perovskite layer on crystalline silicon thin-film (tandem), and covers all non-toxic perovskites and inorganic materials.

Hybrid perovskite material could double the efficiency of solar cells

Apr 09, 2017

Researchers at Purdue University and the National Renewable Energy Laboratory have found that certain hybrid perovskites could double the amount of electricity produced without a significant cost increase. This could help in creating efficient solar cells thinner than conventional silicon solar cells, that are also flexible, cheap and easy to make.

Hybrid perovskite material could double the efficiency of solar cells image

The material, a crystalline structure that contains both inorganic materials (iodine and lead) and an organic material (methyl-ammonium), boosts the efficiency so that it can carry two-thirds of the energy from light without losing as much energy to heat.

Korean researchers develop a method to produce perovskite solar cells with impressive efficiency and stability

Apr 05, 2017

Researchers at the Korea-based Ulsan Institute of Science and Technology (UNIST) have announced the development of a method to produce perovskite solar cells, demonstrating hybrid organic/inorganic perovskite solar cells of 21.2% efficiency, with good stability – retaining 93% of the initial performance after 1,000 hours of light exposure.

The study, a collaboration between UNIST and the Korea Institute of Chemical Technology (KRICT), proposes a new manufacturing method for perovskites - the ‘hot-pressing method’. The University says that this method allows the production of stable, low cost-high efficiency perovskite solar cells.

Australian team reports "new world efficiency record" with perovskite solar cells

Apr 05, 2017

Researchers at the Australian National University (ANU) have reportedly achieved a new world record in the development of perovskite-based solar cells - 26% efficiency in converting sunlight into energy.

ANU team reports ''new world efficiency record'' with perovskite solar cells

The ANU team has been experimenting with perovskite solar cells placed on top of silicon solar cells. The researchers say that the perovskite cells are much better than silicon ones at absorbing blue light, so it is possible to get a much higher voltage out of them. This can be used to circumvent silicon solar cells' efficiency limit, and the ANU team states that it is "... a step closer to a low-cost alternative".

Researchers use carbon nanotubes to improve the stability of perovskite-based solar cells

Mar 19, 2017

Researchers from Aalto University, Uppsala University and École polytechnique fédérale de Lausanne (EPFL) in Switzerland have managed to improve the long term stability of perovskite-based solar cells by using a carbon nanotube film to replace the gold used as the back contact and the organic material in the hole conductor.

Crbon nanotubes used to improve the stability of perovskite solar cells image

To conduct the study, thick black films with high conductivity were used in the back contact of the solar cell where light does not need to get through. Nanotube films can also be made transparent and thin, which would make it possible to use them as the front contact of the cell. The solar cells were prepared in Uppsala and the long-term stability measurement was carried out at EPFL.

Microquanta reports 15.24% efficiency perovskite-based PV modules

Mar 14, 2017

Microquanta Semiconductor, a China-based thin-film PV firm, has announced a new efficiency record for perovskite mini-modules: 15.24%, certified by Newport PV Lab in Montana, US. The tested mini-module has an aperture size of more than 16 cm2.

Microquanta reports record efficiency perovskite modules image

Microquanta said that by passing the 15% efficiency milestone for the first time, it has moved significantly closer towards commercialization of perovskite solar cells. It also claimed that perovskite mini-modules are desirable since they can reduce the manufacturing cost of current c-Si based solar cells by between 60-80%.

2D layered perovskite materials poised to improve optoelectronic devices

Mar 14, 2017

Researchers at Los Alamos National Laboratory and their partners are creating innovative 2D layered hybrid perovskites that they say can allow greater freedom in designing and fabricating efficient optoelectronic devices. Industrial and consumer applications could include low cost solar cells, LEDs, laser diodes, detectors, and other nano-optoelectronic devices.

Perovskite edges tuned for optoelectronic performance image

They explain that these materials are layered compounds, or a stack of 2D layers of perovskites with nanometer thickness (like a stack of sheets), and the 2D perovskite layers are separated by thin organic layers. "This work could overturn conventional wisdom on the limitations of device designs based on layered perovskites", the team says.