Huarou PV has reported a conversion efficiency of 27.98% for its self-developed single-junction perovskite solar cell, certified by the National PV Industry Measurement and Testing Center (NPVM). The test device has an area of 0.051 m² and was measured under standard illumination conditions.

According to shareholder Ouhai Sci-tech Group, the result represents the first time a perovskite solar cell has exceeded the laboratory efficiency of all single-junction crystalline silicon cells. For comparison, the previous record of 27.9% was achieved by LONGi in 2025 using its HTBC structure and verified by Germany’s Institute for Solar Energy Research Hamelin (ISFH), later included in the Solar Cell Efficiency Tables (Version 67).

Researchers from the Indian Institute of Technology Bombay and Linköping University have reported a four‑terminal (4T) silicon-perovskite tandem solar cell with a power conversion efficiency of 30.2%. The device combines an optimized transparent perovskite top cell with a monocrystalline n‑type TOPCon silicon bottom cell that delivers 25.5% efficiency on its own.

Efficient spectral utilization in tandem architectures requires careful bandgap tuning of the perovskite absorber. However, shifting the bandgap up or down often introduces open‑circuit voltage (VOC) losses, which are commonly attributed to misalignment at the charge‑transport interfaces. The study investigates whether this conventional explanation fully accounts for the observed voltage deficits.

Researchers from Henan University, The University of Sydney, Forschungszentrum Jülich (IMD-3 Photovoltaics), University of Glasgow, University of New South Wales (UNSW), Westlake University and University of South Australia have developed a pH-modulated co-SAM (self-assembled monolayer) strategy that improves the performance and robustness of wide-band-gap perovskite and perovskite-silicon tandem solar cells. Their approach centers on suppressing aggregation in SAM precursor solutions, a common bottleneck that limits film quality and device stability.

The team discovered that aggregation in standard SAM precursor molecules can be effectively mitigated by controlling the solution’s pH. To achieve this, they synthesized a new compound - 6-aminohexylphosphonic acid hydrochloride (6AHPACl) - and introduced it to the widely used (4-(3,6-dimethyl-9H-carbazol-9-yl)butyl)phosphonic acid (Me-4PACz) solution. The resulting co-SAM formulation not only stabilizes the pH but also enhances surface chemistry at the SAM/perovskite interface.

Reports suggest that wind and solar manufacturer Mingyang Smart Energy Group plans to invest more than RMB 3.5 billion (over US$508 million) in Zhongshan, Guangdong Province, to develop 6 clean energy-related projects.

Among these is a GW-scale building-integrated photovoltaics (BIPV) perovskite production line, which the company states would be the first GW-class project of its kind globally. 

Researchers from Central South University, Imperial College London and City University of Hong Kong have reported a new class of tailored ferrocenium oxidants that function as highly efficient dopants for Spiro-OMeTAD in perovskite solar cells (PSCs). By tuning the reduction potential of ferrocenium species, the team achieved near-quantitative conversion of Spiro-OMeTAD to its oxidized form (Spiro-OMeTAD⁺), delivering optimal charge transport and energy-level alignment without the drawbacks of conventional lithium-based schemes.

Conventional PSCs relying on LiTFSI and 4-tert-butylpyridine (TBP) co-doping routinely suffer from hygroscopicity, volatility, and poor long-term reliability. To overcome these limitations, the researchers developed a one-step route to redox-tunable ferrocenium salts with specific anion selectivity. Among these, the dibromo-ferrocenium bis(trifluoromethylsulfonyl)imide (FcBr₂TFSI) compound proved particularly effective, offering strong oxidative power and enabling full Spiro-OMeTAD doping at ultra-low concentrations - just 5 mol%.

Motech Industries, a leading Taiwanese solar manufacturer, has announced the launch of a pilot production line for high-efficiency perovskite-silicon tandem solar panels. 

Located in Taoyuan, Taiwan, the new facility has an initial annual capacity of 10–20 MW and is backed by an investment of around NT$500 million (over US$15 million). While not yet focused on mass production (but rather on research, development, and process validation), the pilot line aims to refine tandem cell processes, improve manufacturing yields, and validate scalability.

Sungkyunkwan University (SKKU) researchers have developed an indium-free transparent electrode technology for perovskite light-emitting diodes (PeLEDs), achieving high performance, chemical robustness, and improved device stability. The work, led by Professors Han-Ki Kim and Bo Ram Lee, introduces nitrogen-doped tin oxide (NTO) as a cost-effective, sustainable alternative to conventional indium tin oxide (ITO).

Image from: Materials Today

Perovskite LEDs are recognized for their exceptional color purity and processing flexibility, but the reliance on ITO remains a bottleneck due to indium’s rarity, high cost, and poor chemical compatibility with acidic hole transport layers such as PEDOT:PSS. Over time, indium diffusion and electrode corrosion can degrade device performance and shorten operational lifetime.

Researchers from Henan University, Southeast University, HZB, EPFL, Queen Mary University of London, Chinese Academy of Sciences, University of Stuttgart, Cardiff University, University of the Basque Country UPV/EHU, University of Cambridge, Xiamen University and The Hong Kong Polytechnic University have developed a method for enhancing both the efficiency and environmental resilience of perovskite solar cells.

"We have recently achieved significant advances in protecting perovskite solar cells against light, heat, moisture, and mechanical stress. But operating them reliably under changing environmental conditions is still a challenge," says Prof. Michael Saliba, head of the Institute for Photovoltaics (IPV) at the University of Stuttgart.

SPS has announced the launch of its first-phase public tender for core process equipment used in perovskite solar cell manufacturing.

In recent years, SPS has built its competitive advantage around its “core trio” of slot-die coating, vacuum drying equipment (VCD), and hot plate (HP) technologies, which together represent about 70% market share. By integrating additional key equipment from leading perovskite equipment manufacturers, SPS has delivered more than ten complete perovskite solar cell production lines / turnkey solutions across the industry. All projects have successfully passed final acceptance testing (FAT), establishing SPS’s position as a cost-competitive global supplier of perovskite manufacturing equipment and production lines.

Researchers from the National University of Singapore and AGH University of Krakow have developed a novel fabrication strategy for double-sided tunnel oxide passivated contact (DS-TOPCon) silicon bottom cells, designed for use in perovskite/silicon tandem (PST) solar cells. The team demonstrated that carefully controlled heated indium tin oxide (ITO) deposition can significantly reduce sputtering-induced damage while enhancing conductivity and transparency - two critical requirements for efficient tandem integration.

In DS-TOPCon architectures, both the front and rear surfaces of the silicon wafer feature passivating silicon oxide (SiOx)/polycrystalline silicon (poly-Si) stacks, replacing the conventional single-sided (SS-TOPCon) structure. The result is a fully passivated, symmetric cell that minimizes recombination losses and raises the open-circuit voltage. This approach also provides improved carrier selectivity and mechanical stability - qualities that make DS-TOPCon particularly well suited to high-efficiency, monolithic tandem devices.