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lead-free

First attempt to build antimony photovoltaic modules

An Italian research team claims a first for solar modules based on air stable lead-free and tin-free antimony-based light absorber, a perovskite-inspired material. The mini modules have a 1.2% power conversion efficiency over a 2.52 cm2 active area.

An environmental failsafe for lead-based perovskites

Scientists in Switzerland discovered that certain types of phosphate salt react with lead only in the presence of moisture, to form non-water-soluble phosphates. Incorporating these salts into the architecture of a lead-based perovskite solar cell could greatly reduce the risk of lead seeping into the environment should the cells be damaged, without incurring significant costs or negatively affecting the cell’s performance.

Paving the way for lead-free perovskites

Scientists in Germany and China have developed an additive which greatly improved the performance of a tin-based perovskite solar cell. Cells fabricated with the additive reached 9.1% efficiency, and the researchers say their work opens up many new possibilities to improve the performance of lead-free perovskites.

Harmful lead in photovoltaics – are there sustainable alternatives?

Without globally unified standards in waste management, the risk from toxic materials such as lead will become increasingly important.

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The weekend read: A lead-free future for solar PV

Lead plays an important role in crystalline silicon module manufacturing when it comes to cell interconnection. But even in small amounts, the presence of this toxic material in a PV module could be viewed as a black mark against the industry’s sustainable credentials. Alternatives are available, but it seems the price is not yet right for broader uptake.

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Korean researchers propose new material for stable, lead free perovskite

A team of scientists from the Korea Advanced Institute of Science and Technology (KAIST) has proposed a gold-based halide perovskite as a material for high efficiency solar cells, which it says could be both more stable and more environmentally friendly to produce than many existing perovskites which scientists are investigating to boost solar efficiency.

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US researchers get the lead out of perovskites

Scientists led by Brown University have developed perovskite solar cells, which replace the toxic lead common to many of these material structures with titanium. The researchers say that with further optimization, the material could eventually be ideal for use as a tandem cell layer.

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Teamtechnik & research partners develop award winning lead-free PV system

A joint project conducted by the Carinthian Tech Research Center and the Austrian Institute of Technology, in conjunction with German equipment manufacturer teamtechnik has developed a lead-free PV system using glued ribbon technology.

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