Perovskite applications

Researchers from Singapore's Nanyang Technological University and France's University of Lille (CNRS) have developed a biomass-derived furan-based conjugated polymer, PBDF-DFC, enabling a simplified direct precursor integration fabrication method for hybrid perovskite solar cells (HPSCs). 

Unlike traditional thiophene-based polymers, PBDF-DFC reportedly exhibits high solubility in perovskite precursor solvents, allowing direct incorporation into the precursor solution. This direct precursor integration approach could significantly streamline the fabrication process, reducing steps and potentially lowering production costs. 

Toyoda Gosei, part of the Toyota Group, has announced its plans to start a trial of smartwear fitted with perovskite solar cells, as clothing that can generate power.

Toyoda Gosei has been conducting joint development with Enecoat Technologies, a startup specializing in perovskite technology, since investing in the company in 2023. Now, as a product application of perovskite solar cells, the companies have made prototype smartwear that can be fitted with these solar cells manufactured by Enecoat Technologies for functions such as health management with various sensors and heating/cooling, using the generated power.

A Japanese consortium that includes three companies is testing the durability and performance of lightweight, flexible perovskite solar modules at Osanbashi Pier, Yokohama City in windy and salt-air conditions. The outdoor trial is part of a larger 3-year perovskite solar technology research collaboration.

Demonstration location: Large Pier (owned and designated by Yokohama City Port Bureau). Image credit: Macnica

The three-month 1 kW perovskite solar module trial on Osanbashi Pier began in November 2024. The three Japan-based companies that are participating in the outdoor seaport demonstration are: Macnica, a technology and electronics supplier, Reiko, a thin film product manufacturer, and perovskite solar cell specialist Peccell Technologies, which was founded in 2004 as a Toin University of Yokohama spin-off by perovskite solar cell pioneer Tsutomu Miyasaka.

Halide perovskite single crystals have demonstrated enormous potential for next-generation integrated optoelectronic devices. However, there is a lack of
a facile method to realize the controllable growth of large-scale, high-quality, and high-resolution perovskite single crystal arrays on diverse types of
substrates, which hinders their application in practical scenarios. 

 Schematic illustration of the method to prepare perovskite single crystal arrays. Image from: Advanced Science

Now, researchers from the University of Hong Kong, Nankai University and Korea Advanced Institute of Science and Technology (KAIST) have developed a one-step wettability-guided blade coating approach for the rapid in situ crystallization of large-scale, multicolor, and sub-100 nm perovskite single-crystal arrays in ambient conditions.

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Researchers from the University of Cambridge, Lawrence Berkeley National Laboratory and the University of California, Berkeley, have developed a novel way to make hydrocarbons – powered solely by the sun.

a) Architecture of the tandem PEC device. b) A schematic illustration of the nanoporous electrode. Image credit: Nature Catalysis

The device they developed combines a light absorbing ‘leaf’ made from a perovskite solar cell, with a copper nanoflower catalyst, to convert carbon dioxide into useful molecules. Unlike most metal catalysts, which can only convert CO₂ into single-carbon molecules, the copper flowers enable the formation of more complex hydrocarbons with two carbon atoms, such as ethane and ethylene — key building blocks for liquid fuels, chemicals and plastics.

The controlled growth of two-dimensional (2D) perovskites on top of three-dimensional (3D) perovskite films can improve the performance and stability of perovskite solar cells (PSCs) by reducing interfacial recombination and impeding ion migration. However, the random orientation of the spontaneously formed 2D phase atop the pre-deposited 3D perovskite film can deteriorate charge extraction owing to energetic disorder, limiting the maximum attainable efficiency and long-term stability of the PSCs. 

Schematic illustrating the reorientation of the 2D-MAP perovskite during and after the post-dripping process. Image credit: Nature Communications

Recently, an international team of scientists, including ones from Saudi Arabia’s KAUST, Korea University and the Chinese Academy of Science, developed a meta-amidinopyridine ligand and the solvent post-dripping step to generate a highly ordered 2D perovskite phase on the surface of a 3D perovskite film. 

Researchers from the Chinese Academy of Sciences (CAS), Hebei University of Science and Technology, Hebei University of Engineering, North China Electric Power University, Anhui Institute of Innovation for Industrial Technology, University of Science and Technology of China, Hefei University of Technology and Liaocheng University have used Lauramide (LA) molecules on perovskite films as a surface modification layer. As a result, the team demonstrated a multifunctional surface molecular modification strategy to develop high-efficiency perovskite solar cells. 

By depositing the layer of LA molecule, the defects on the perovskite surface were successfully passivated. LA can form hydrogen bonds with iodide ions (I⁻) and promote anchoring to impede the migration of I⁻ inside the crystal structure. The lone electron pair of the carbonyl (C=O) functional group in LA can also coordinate with the uncoordinated lead ions (Pb²⁺) or lead clusters (Pb0), which effectively reduces the non-radiative recombination caused by surface defects. 

While quasi-2D perovskites made with organic spacers co-crystallized with inorganic cesium lead bromide can enable near unity photoluminescence quantum yield at room temperature, LEDs made with such quasi-2D perovskites tend to degrade rapidly - which remains a major bottleneck in this field.

Now, researchers from SUNY University at Buffalo, Texas A&M University, Brookhaven National Laboratory, Missouri University of Science and Technology, National Taiwan University and Yonsei University have shown that the bright emission originates from finely tuned multi-component 2D nano-crystalline phases that are thermodynamically unstable.

Researchers from the Indian Institute of Technology Guwahati have reportedly developed a perovskite-based approach to detecting harmful metals like mercury in living cells and the environment.

The team relied on perovskites' unique interaction with light, which enables them to serve as fluorescent probes inside living cells. However, their quick degradation in water has previously limited their applications. To address this, the researchers encapsulated the perovskite nanocrystals in silica and polymer coatings, significantly enhancing their stability and luminescent intensity in water. This modification ensures the nanocrystals maintain their functionality over extended periods, making them highly effective for practical use.