Perovskite applications - Page 2

A research team, led by Professor Yong-Young Noh and Dr. Youjin Reo from the Department of Chemical Engineering at POSTECH (Pohang University of Science and Technology), has developed p-channel Sn²⁺-halide perovskite TFTs using a thermal evaporation approach with inorganic caesium tin iodide (CsSnI₃). 

The project was a collaborative effort with Professors Ao Liu and Huihui Zhu from the University of Electronic Science and Technology of China (UESTC) and resulted in the development of high-performance, stable p-channel CsSnI₃-based TFTs using a commercially compatible vapor-deposition approach with PbCl₂ as an additive. The volatile chloride triggers solid-state reactions and the conversion of as-evaporated precursor compounds. This facilitates the formation of high-quality and uniform perovskite films, and also modulates the high hole density, making them suitable for use as channel layers. The optimized CsSnI₃:PbCl₂ TFTs delivered average µFE of around 34 cm2 V⁻¹ s⁻¹, on/off ratio of around 10⁸ and storage stability of more than 150 days. The team also demonstrated a large-scale Sn²⁺-halide perovskite TFT array that overcomes the technical challenges faced in the solution process. The vapor-deposited TFTs could be used in backplanes for organic light-emitting diode displays, or in logic devices and circuits for monolithic three-dimensional integration, where low process temperatures are required.

A research team led by Professor In Soo-il from the Daegu Gyeongbuk Institute of Science and Technology (DGIST) recently developed a beta battery that directly consolidates radioactive isotope electrodes and perovskite absorption layers.

As the miniaturization of electronic devices accelerates, the demand for new power supply technologies that can minimize charging cycles surges. However, lithium and nickel-based batteries currently in widespread use have short lifespans and are vulnerable to heat and humidity, showing limitations in extreme environments. As an alternative to overcome these limitations, the technology of "betavoltaic cells," which can provide stable power for years to decades, is gaining attention.

Ultraviolet (UV)-induced damage and limited solar spectrum utilization can hinder the performance of perovskite solar cells (PSCs). In a recent study, researchers from Fuzhou University and Chinese Academy of Sciences developed a thermally activated delayed fluorescent (TADF) molecule, 4CzIPN, to address these challenges. 

Acting as a down-conversion agent, 4CzIPN can convert UV light to visible light via Förster energy transfer, enhancing light absorption and reducing photon loss. Additionally, it can bind Pb²⁺ defects and prevents organic cation degradation through cationic π-effects, stabilizing the perovskite structure. By serving as a crystal growth site, 4CzIPN can promote intermediate phase formation and delay the crystallization process, and improve film quality while mitigating residual stress due to its high thermal expansion coefficient. Furthermore, its UV filtration and hydrophobic properties would reduce perovskite decomposition and device degradation.

Researchers from Daegu Gyeongbuk Institute of Science and Technology (DGIST), Lawrence Berkeley National Laboratory, University of California and Pohang University of Science and Technology (POSTECH) have observed and identified the water-induced degradation mechanism of perovskite in real time at the atomic scale. 

Image from: Matter

This recent study presents key strategies for enhancing the stability of perovskite materials and could accelerate their commercialization. 

AISIN Corporation launched an in-house demonstration of perovskite solar cells at its Anjo Plant in March 2025. AISIN is an automotive component supplier, and part of a public-private group launched by the Japanese Government with the aim of commercializing flexible perovskite solar cells, that includes around 150 public and private entities working together to accelerate the adoption of such cells.

Completed installation visual. Image credit: AISIN

AISIN’s perovskite solar cells are said to feature high power efficiency, which is realized through more than 20 years of R&D on solar cells, and high durability, which is derived from a proprietary film structure using thin glass by leveraging the manufacturing capabilities cultivated in the manufacture of automotive components.

Researchers from the University of North Carolina at Chapel Hill and Hong Kong Polytechnic University have addressed the challenges hindering the reception of wide-bandgap (WBG) perovskite solar cells, which are expected to play a key role in next-generation multi-junction solar cells but suffer from large photovoltage loss, poor stability and scalable fabrication in ambient air.

The team incorporated a reductive methylhydrazinium cation into WBG perovskites, which not only reduced defect density but also suppressed iodide oxidation and halide demixing, enabling scalable fabrication of efficient and stable WBG solar cells and modules in ambient air. 

At the recent MWC 2025 exhibition, Anker Solix presented a raincoat with perovskite solar panels for charging electronic devices outdoors. The wearable charging prototype resembles a rain jacket with a slippery surface.

The jacket, which Anker Solix calls a cloak, is covered in about two dozen sewn-on flexible perovskite solar cells. An attached cable with a 30-watt USB-C output connects to a power bank or directly into your device, so you can charge your electronics as you walk around or relax outdoors.

Researchers from the Indian Institute of Technology Roorkee, CSIR-National Physical Laboratory and Academy of Scientific and Innovative Research (AcSIR) have designed a solution-based fabrication approach involving a high-performance semi-transparent perovskite cell (ST-PSC) stacked in tandem with a hybrid heterojunction silicon solar cell (HHSC). 

The hybrid heterojunction solar cell was embedded as a bottom device in a four-terminal perovskite-silicon solar cell using the new solution processing technique. The novel cell architecture, according to the team, could be produced at significantly lower costs compared to conventional perovskite-silicon tandem designs.

Mobile tech brand Infinix is to unveil two innovations at ShowStoppers MWC 2025, and one of which is a new concept designed to optimize smartphone battery life by capturing ambient light from both indoor and outdoor environments. By integrating perovskite photovoltaic materials with AI-powered energy management, Infinix aims to create devices that charge passively from everyday light sources, reducing reliance on conventional charging methods. 

The system uses a custom smartphone case embedded with photovoltaic cells that absorb light and convert it into electricity. This energy is then transferred to the phone through discreet contact points, ensuring seamless power delivery. AI algorithms continuously monitor light levels, adjusting the power collection process in real time to maximize efficiency and prevent overheating or energy loss.

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.