Researchers at Chongqing Normal University and Monash University recently developed a new type of perovskite material - by assembling cesium lead bromide (CsPbBr₃) nanocrystals into highly ordered “supercrystals,” the team harnessed collective excitonic effects that overcome a key limitation of conventional perovskite nanocrystals - biexciton Auger recombination.

In traditional colloidal perovskite nanocrystals (NCs), lasing efficiency is limited by the rapid nonradiative decay of biexcitons, which restricts optical gain and shortens emission lifetimes. The new supercrystal architecture tackles this problem at the structural level rather than by changing chemical composition. Within the dense and periodic superlattice, excitons - bound electron–hole pairs generated by light - interact cooperatively across multiple nanocrystals. This collective behavior allows excitations to delocalize, suppressing energy losses and enabling far more efficient light amplification.

Researchers from India's CSIR-Central Scientific Instruments Organization have developed a predominantly dry, low-temperature fabrication process for flexible all-inorganic perovskite solar cells, combining material sustainability with high device performance.

The device structure - PET/ITO/rGO–SnO₂ (or rGO–TiO₂)/CsSn₁‑yGeᵧI₃/MoOₓ/Carbon - integrates lead-free CsSn₁‑yGeᵧI₃ absorbers and graphene-modified electron transport layers, enabling a power conversion efficiency of 19.2% with enhanced operational and mechanical stability. The architecture employs MoOₓ as a dopant-free hole transport layer with favorable energy-level alignment, while minimizing solvent use throughout fabrication.

Researchers from the Chinese Academy of Sciences (CAS), KTH Royal Institute of Technology, Xián Polytechnic University, Northwestern Polytechnical University, Qingdao University of Science and Technology and King Abdullah University of Science and Technology (KAUST) have designed a 2D perovskite layer, integrated at the buried interface of 3D perovskite solar cells (PSCs) to boost device performance and operational stability. The method improves the crystallization quality of perovskite films and reduces defect concentrations at the buried interfaces by more than 90%.

A major bottleneck limiting the photovoltaic performance and stability of PSCs is the presence of numerous defects on the devices' top and bottom surfaces. While incorporating long-chain ammonium salts into the bulk perovskite can form 2D perovskite phases both in the bulk and at the buried interfaces of the film, fabricating 2D structures exclusively at buried interfaces has been a challenge. To address this problem, the research team sequentially grafted thioglycolic acid (TGA) and oleylamine (OAm) onto the surface of tin dioxide (SnO₂) nanoparticles, yielding the modified material SnO₂-TGA-OAm. Strong chemical bonding between TGA and OAm ensures that cation exchange with formamidinium iodide (FAI) occurs only during the thermal annealing of perovskite films, enabling the spontaneous formation of a 2D/3D perovskite heterostructure solely at the film's bottom interface.

Researchers from Hebei University of Technology, Kunming University of Science and Technology, Macau University of Science and Technology and CNRS have reported a new stabilization approach for perovskite solar cells. The team demonstrates that incorporating a hindered amine light stabilizer into inverted perovskite solar cells effectively blocks photo-induced decomposition pathways. 

Using this approach, the researchers fabricated devices that achieved a certified power conversion efficiency exceeding 26% while maintaining performance under prolonged light exposure - offering a promising route toward durable, high-performance perovskite photovoltaics.

While formamidinium lead iodide (FAPbI₃) displays favorable optoelectronic properties, its photoactive black phase is thermodynamically unstable at room temperature and prone to transformation into non-functional phases under light, heat, or moisture. Existing stabilization strategies, including compositional mixing and surface passivation, often introduce new degradation pathways, including interfacial strain and accelerated ion migration. 

To address this issue, researchers from Huazhong University of Science and Technology, Hainan University, Shantou University, Chinese Academy of Sciences and Wuhan University of Technology have developed a stabilization strategy based on co-evaporated cesium lead iodide (CsPbI₃) capping layers. The team developed a 3D/3D bilayer perovskite structure, in which an ultrathin (~5 nm) cesium lead iodide (CsPbI₃) layer is deposited on top of a formamidinium-based perovskite absorber using a vapor-phase co-evaporation process. Unlike conventional low-dimensional surface treatments, both layers retain a three-dimensional perovskite framework, enabling robust structural coupling across the interface.

In Pulan County, Tibet, at an average altitude of 3,900 meters, a new off-grid power supply system developed and implemented by Shenzhen Guangyi Technology has entered its trial operation phase. Unlike the previous grid-dependent power supply model, this system uses perovskite solar panels to generate electricity, showcasing Baoan District’s cutting-edge photovoltaic technology. This innovation not only addresses the challenge of providing power for local public services but also represents a significant real-world application of perovskite photovoltaic technology in outdoor public service scenarios.

“The power grid coverage is limited on the plateau, but there is plenty of sunshine, which perfectly leverages the advantages of perovskite's lightweight nature and good performance in low light”, explained Wen Yanjie, founder of Shenzhen Guangyi Technology. He added that the project is a high-altitude off-grid power supply pilot jointly developed along with Microspace, with a core focus on improving daily life: “Specifically, it's used to power portable toilets, effectively solving the problem of tourists having difficulty finding restrooms ”.

It was reported that Singapore's Nanyang Technological University (NTU) has launched three new space projects under Singapore's Space Technology Development Program, a national initiative to accelerate the commercialization of space technologies. The projects are among the first supported under this program, which targets annual launches in 2026, 2027 and 2028 to give local researchers and companies faster, more cost effective access to space for in orbit testing and validation.

One of the new projects will see scientists from NTU's Satellite Research Centre integrate an edge computing artificial intelligence payload into a nanosatellite built by space technology firm Satoro Space. The 3U nanosatellite, measuring 30 centimeters by 10 centimeters by 10 centimeters, will process images directly on board using small AI models and an edge engine. The same satellite will also test next generation perovskite solar cells in space. These lightweight solar panels are being developed by researchers from NTU's School of Electrical and Electronic Engineering, School of Materials Science and Engineering, and local technology start up Singfilm. In orbit demonstration of the devices will provide critical data on their performance and durability in the harsh space environment.

Jilin University researchers have developed a multifunctional molecular strategy to improve the phase purity and defect passivation of quasi‑two‑dimensional (quasi‑2D) perovskite films, addressing long‑standing challenges of uneven phase distribution and excessive non‑radiative recombination. Conventional quasi‑2D perovskites often suffer from random crystallization caused by long‑chain organic cations, which results in incomplete energy transfer and severely limits device efficiency.

To overcome this, the team introduced a methoxy‑methyl (diphenyl) phosphine oxide (MDPO) molecule as a bifunctional additive. Density functional theory (DFT) simulations revealed that the strong electron‑donating P = O group in MDPO coordinates with under‑coordinated Pb²⁺ ions, effectively passivating trap states, while simultaneously controlling crystallization. This coordination inhibits the formation of small‑n phases and promotes the growth of large‑n ones, resulting in a more uniform perovskite layer with fewer defects.

Researchers from KAIST and Seoul National University have developed a new strategy to enhance both the efficiency and stability of Sn–Pb perovskite solar cells (PSCs). Sn–Pb PSCs are regarded as promising candidates for the bottom subcell in all‑perovskite tandem architectures due to their optimal low bandgap and potential to approach the Shockley–Queisser limit. However, their practical implementation remains constrained by the facile oxidation of Sn²⁺ ions and high defect densities.

To address these challenges, the research team incorporated FA₂SnI₆ vacancy‑ordered double perovskite (FADP) - a stable n-type semiconductor - at the interface between the Sn–Pb perovskite and the electron transport layer (ETL). This integration establishes a heterodimensional interface that effectively passivates interfacial defects, suppresses non‑radiative recombination, and promotes favorable band alignment between the perovskite absorber and ETL.

Researchers from China's Shanghai Jiao Tong University, Fujian Science & Technology Innovation Laboratory for Energy Devices of China (CATL 21C Lab) and Shanghai Non-carbon Energy Conversion and Utilization Institute have developed an in situ dual‑interface modification strategy to enhance the performance and durability of large‑area perovskite solar modules.

The team addresses a critical challenge in p–i–n‑type perovskite solar cells: the simultaneous optimization of the two key interfaces - particularly between the perovskite layer and self‑assembled monolayers (SAMs). These interfaces largely determine device efficiency and stability, yet their regulation has remained difficult to achieve in scalable, large‑area module fabrication.