The Perovskite-Info newsletter (October 26, 2021)

Unlike the narrow band emission based on free excitons in lead-perovskite nanocrystals (NCs), the low electronic dimensionality in lead-free double perovskite NCs can lead to self-trapped excitons (STEs), generating a broadband emission. To date, how the singlet/triplet STEs influence the photoluminescence properties and whether triplet STEs can generate efficient emission in double-perovskite NCs has been unclear.

A research team, led by Prof. Han Keli and Yang Bin from the Dalian Institute of Chemical Physics (DICP) of the Chinese Academy of Sciences, recently synthesized double perovskite nanocrystals with bright photoluminescence emission based on triplet STEs.

At a recent CEATEC event, Toshiba presented a film-based perovskite photovoltaic module, and won the Minister of Economy, Trade and Industry Award at the event. The module was a double winner, also awarded the Grand Prix in the Carbon Neutral category.

Toshiba's solar module is light and flexible and can be installed in various places, including curved surfaces and windows. The lightweight and flexible solar cells made from perovskite film have achieved an energy conversion efficiency of 15.1%.

The US Department of Energy (DoE) awarded nearly $40 Million for grid-decarbonizing solar technologies projects. The DoE awarded the funds to 40 research projects, several of which are perovskite related. We'll list the perovskite projects (which were awarded a total of $1.25 million) below.

The DoE also issued a request for information (RFI) to gather input on efficiency, stability and replicability performance targets for perovskite photovoltaic devices that could be utilized to demonstrate technical and commercial readiness for future funding programs.

Researchers at the Indian Institute of Technology Madras (IIT-M) have developed a perovskite-based white light emitter for use in energy-efficient Light Emitting Diodes or LEDs.

As conventional LED materials cannot emit white light, to produce white light, specialized techniques such as coating blue LED with yellow phosphor and combining blue, green, and red LEDs have been used, along with a worldwide search for materials that can directly emit white light.

A recent study by Lawrence Berkeley National Laboratory (Berkeley Lab), Technische Universität München, EPFL and The Pennsylvania State University has found that solar materials manufacturing could be aided by a new instrument that uses two types of light – invisible X-ray light and visible laser light – to probe a perovskite material’s crystal structure and optical properties as it is synthesized.

“When people make solar thin films, they typically have a dedicated synthesis lab and need to go to another lab to characterize it. With our development, you can fully synthesize and characterize a material at the same time, at the same place”, said Carolin Sutter-Fella, a scientist at Berkeley Lab's Molecular Foundry.

Metalgrass (Perovskite-Info) is now offering a new subscription service for enterprises that want access to our complete collection of market reports.

For $3,500 per year, you will get an Enterprise License to all of our market reports. Metalgrass currently offers 12 market reports, plus 4 handbook guides, and all of these are included in the subscription (bought separately, these will cost over $10,000!). You will also have access to all new reports, updates and guides released in the future (during the yearly subscription period).

Our Enterprise License gives access to your entire organization: you can share the report with all the company employees via mail, shared server or any other digital way.

Researchers from Florida State University and Washington University in St. Louis have developed a new material for displays and a novel way to fabricate it—using an inkjet printer. The team used organometal halide perovskites — with a novel twist.

The traditional way to create a thin layer of perovskites, which is in liquid form, is to drip it onto a flat, spinning substrate, in a process known as spin coating. As the substrate spins, the liquid spreads out, eventually covering it in a thin layer. From there, it can be recovered and made into perovskite LEDs, or PeLEDs. A lot of material, however, is wasted in that process—as the substrate spins at several thousand RPM, some of the dripping perovskite splatters and flies away, not sticking to the substrate. The researchers substituted this process with one based on an inkjet printer.

Saule Technologies, developer and manufacturer of perovskite solar cells, recently announced that it is 'making good progress towards getting listed on the NewConnect Alternative Trading System'.

Saule and its shareholders, including the majority holder, Columbus Elite Global S.A. (formerly Blumerang Investors S.A.), have signed an investment agreement, setting the rules for Columbus Elite Global (CEG) to acquire Saule’s shares. With this transaction, Saule will become part of the CEG capital group, which is listed on NewConnect. In return for transferring their shares to Columbus Elite Global, Saule’s shareholders will get shares in the higher share capital of CEG.

Researchers at South Korea’s Ulsan National Institute of Science and Technology (UNIST) and Pohang University of Science and Technology report a power conversion efficiency of 25.8% for a single junction perovskite solar cell, by forming a coherent interlayer between electron-transporting and perovskite layers to reduce interfacial defects.

The cell was built with an interlayer between a tin(IV) oxide (SnO₂) electron-transporting layer and a layer made of a halide perovskite layer by coupling chlorine-bonded SnO₂ with a perovskite precursor containing chlorine. “This interlayer has atomically coherent features which enhance charge extraction and transport from the perovskite layer; and fewer interfacial defects,” the academics explained.