Newest technology solar panels - Perovskite and Metal Wrap

Newest technology solar panels - Sun energy production. New types of solar photovoltaic cell on the market at the end of 2018. The use of the material perovskite (calcium titanium oxide, CaTiO) in the conversion of light into electrical energy has undergone rapid development in recent years, as it turns out.

According to researchers and market parties, Perovskite solar cells can turn the photovoltaic panel market with a magnitude of 42 billion dollars upside down. That writes the Bloomberg news service.

Newest technology solar panels - Perovskite and Metal Wrap

You can sometimes get a little nervous when you read technology blogs about solar panels. Every week there is a new groundbreaking technology, from extremely cheap perovskite cells to aerosol cells. Even with silicon panels, the market-dominant technology that has been running for more than 70 years, efficiency improvements seem to be continually accumulating.

Is it not better to postpone the purchase of PV panels until the innovation curve has flattened out? We delved into the world of photovoltaic cell developments and researched it.

Cells as a coating:

Perovskites can be mixed with liquids and applied to a wide range of materials. Bloomberg sketches a future, cells as a coating - sprayed or printed - on windows, buildings and vehicles. And that cost of solar could be much lower than the current solutions for Sun power.

A perovskite cell is a type of cell which includes a perovskite structured compound, most commonly a hybrid organic-inorganic lead or tin halide-based material, as the light-harvesting active layer.[1][2] Perovskite materials such as methylammonium lead halides are cheap to produce and simple to manufacture

Newest technology PV systems - Perovskite promising.

The Perovskite material is ranking seventh in the top 10 of promising cell technologies by the World Economic Forum in 2016.

Universities and companies around the world are exploring the possibilities of applying perovskite in cells and panels. "The road 'from lab to fab to the roof' is, however, long and full of stumbling blocks.

Efficiency of perovskite.

In 2006 it became clear that perovskite is useful for converting sunlight into electrical energy source. A breakthrough came in 2012 when the return was above 10 percent. In the lab, yields exceed 28%. With this, the yield of silicon cells is slowly approaching, which is around 25 percent and hardly makes any progress.

Newest technology photovoltaic panels - Metal Wrap Through

Metal Wrap Through

The Newest technology solar energy cells generate sustainable energy using sunlight. With new generation techniques come improvements that generate more electricity. It is recognizable that the solar power (wattpeak) and a panel efficiency of solar increase.

The next step for large-scale production of photovoltaic modules in the solar industrie are technologies where the power through contacts is made, at the back of the cell, which connects to a conductive substrate. Such cells are also called backside-contacted cells, in short, 'back contact'. The most promising back-contact technique is 'Metal Wrap Through', or MWT. The thin film ( cadmium telluride ) solar PV panel have a lot lower power output then the Metal Wrap Through.

Three important advantages

  1. Because ribbons no longer needed, a vital stress factor on cells has disappeared. As a result of which prevent microcracks in cells. MWT also makes approximately 1% of the area available for the sun. Three ribbons less saves so soon three percent production of renewable energy.
  2. 25 contact points per cell (instead of 3 busbars) is a considerable improvement of the reliability of the panel and contributes to a lower NOCT with a lower serial resistance.
  3. MWT cells have a more attractive design

Newest technology photovoltaic panels - Perovskite and Metal Wrap

Hybrid PV cell

A cell is a hybrid photovoltaics pv cell that combines ultra-thin amorphous silicon and high-quality monocrystalline silicon into a layered construction that is developed using Panasonic's proprietary technology. With a hybrid, they place the layers with i-type amorphous silicon in the HIT cell.

Between the crystalline silicon wafer and the layers p- and n-type amorphous silicon. They compare the HIT against conventional crystalline silicon cells structure. They defective minimize surface area in photovoltaic modules, which significantly reduces energy loss.

In the next years to come the panel manufactures have to change fast in there product line. Solar thermal energy storage and photovoltaic technology are changing fast.

Most so-called thin-film cells are far behind silicon in terms of efficiency and reliability and, moreover, are often made of rare and expensive material. Silicon, or sand, has a significant advantage that it is present virtually unlimited. These factors ensure that silicon cells, even though they are not the most beautiful and you cannot wrap them around a lamppost, are the undisturbed market leader.

The efficiency of commercial silicon cells varies between 14% and 22%. Silicon cells come in two flavours, poly and monocrystalline cells. But the effectiveness of polycrystalline is at the bottom of the bandwidth although the market share of this type has grown considerably in recent years.

This is because polycrystalline cells are a lot cheaper to produce. So especially for people with a big roof, this type of panel is an excellent option to shorten the payback time of their system. For people with a small roof, monocrystalline panels are another superb way to get a nice power output.

Newest technology solar panels - Perovskite and Metal Wrap

Development of the yield: the theoretical maximum is in sight.

Despite the flow of innovations, PV panels are reasonably stable. How come? Firstly, because there is no substitute in sight for the stable, practically maintenance-free and mass-produced silicon panels. 95% of all solar panels produced in 2019 made of this material.

What about innovations in silicon technology?

They measured efficiency by the amount of sunlight that they convert into electricity. With the first silicon cell in 1953, that percentage was around 4.5%. In the meantime, the most advanced silicon cells convert 26% of the sunlight that falls on them into electricity.

However, this does not mean that the conversion rate of silicon cells can still be turned over four times. The theoretical maximum for photovoltaic cells is around 33%. Because every material that they use to make a cell can only convert part of the light spectrum into electricity. That silicon cells have now achieved a conversion of 26% is quite an achievement and experts do not expect that there is much elongation.