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Toshiba claims that the power conversion efficiency of perovskite solar cell modules is 15.1% – pv Magazine USA

The company claims that this result is the highest efficiency ever reported for a large polymer film-based perovskite PV module.

From Solar Power Magazine Global

Japanese electronic equipment manufacturer Toshiba Announced 15.1% 703 cm power conversion efficiency2 Polymer film-based perovskite solar cell module. The company claims that the result is the highest efficiency ever reported. Large polymer film-based perovskite photovoltaic module.

The device is A one-step coating method that uses improved ink, film drying processes, and manufacturing equipment to form a uniform perovskite layer. This process is said to halve the deposition steps. MAPbI3 Perovskite layer.Coating speeds are said to reach 6 meters per minute 5 x 5 cm2 module, The company has defined it as a rate that meets the requirements for mass production.

Toshiba previously developed 2 stages Coating process with a layer of lead iodide (PbI) first applied2) Ink on the substrate, followed by a layer of methiammonium iodide (MAI) forming MAPbI3 layer. “However, this multi-step approach often resulted in low coating rates, leaving unreacted sections in the perovskite layer,” he added. “The alternative is a one-step process of applying MAPbI.3 Direct ink. “

Toshiba’s printing technology for manufacturing film-based perovskite solar cell modules involves forming substrates with resin films such as polyethylene terephthalate. The cell structure adopts a plane inversion structure that can be manufactured at a temperature of 150 degrees Celsius or less.

The company has succeeded in forming a uniform thin layer of lead iodomethylammonium using the meniscus printing technology developed in the research of organic thin-film solar cells. This will reduce cell variability and improve panel efficiency.

The flexible and lightweight panel is shown by Toshiba as follows: Suitable for places where conventional crystalline silicon modules are difficult to install, such as low load capacity roofs and office windows.

“Toshiba estimates that installing a new perovskite PV module on a roof area of ​​164.9 km will generate two-thirds of the annual power consumption of a home in Tokyo.2, Approximately equal to the surface area of ​​the roofs of all buildings in Tokyo, “said the manufacturer.

In the future, the company said it would like to expand its modular area as follows: 900cm2 Achieves efficiencies close to 20%.Achieving these goals said it would reduce The manufacturing cost of a perovskite photovoltaic module is approximately $ 0.14 / W.

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