Trinasolar, leading the way in smart photovoltaic technology and energy storage solutions, focusing on R&D, manufacturing, and sales, achieves a new milestone with promising results regarding a new industrial-built format of solar panel using advanced light-absorbing materials.Teaming up with the Huairou Laboratory, a national research institution in Beijing, China, within the energy sector, which aims to achieve ‘carbon peak and neutrality’, Trinasolar showed the promising results of altering the usual challenges of solar PVs in terms of robustness and assimilation.

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Usage of Perovskite, a highly efficient, flexible, and cost-effective semiconductor with exceptional light absorption capacity (90 per cent) on top of the PV panels, commonly known as a tandem solar stack (two different light-absorbing semiconductor layers wired together), gave positive outcomes to the experiment.

Dr Yifen Chen, research leader of this project, stated, “We are pleased to announce two new world records in perovskite/crystalline silicon tandem solar technology through the effective collaboration.” He further explained that the light energy lost by turning into heat became significantly lower.

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Aluminium is an indispensable material in the solar photovoltaic (PV) industry, with the need for lightweight, durable, and cost-effective materials for solar infrastructure. For the solar energy generating structure, photovoltaic technologies are commonly evaluated based on watts per module, as each additional panel increases costs associated with transportation, wiring, and installation labour. 

As solar panels became more powerful, energy losses in metal connections became more noticeable. Designers reduced these losses by shortening current paths, using thicker conductors, and adopting half-cut cells that lowered current and heat buildup. 

At the same time, larger panels faced tighter limits on weight, wind resistance, and shipping damage, making mechanical design just as important as electrical improvements in high-power solar modules.

Efficiency records relied on careful testing, since small temperature changes or uneven lighting could affect results. Recognised test centres such as German laboratory Fraunhofer ISE CalLab, tested devices for many organisations and issued trusted certificates. Certification made results comparable across companies, but did not indicate long-term outdoor performance.

Coating a smooth perovskite layer over large silicon wafers required precise control of materials, temperature, and drying. Small defects such as pinholes caused charge losses, reducing voltage and power. As coating areas increased, defects became more likely, lowering factory yield and raising costs. Without high and consistent yield, strong lab results could fail to meet practical cost targets in real manufacturing.

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The interface between perovskite and silicon determined how much charge was lost before reaching contacts. Passivation (a process of enhancing corrosion resistance) and transport layers reduced leakage, but they had to remain stable under light and heat and fit existing manufacturing processes, requiring tight control during large-scale production.

Outdoor durability was critical because perovskite layers could degrade under heat, moisture, and strong sunlight despite high initial efficiency. Ion migration under stress distorted internal electric fields, reducing reliability. A 2024 review highlighted these risks, emphasising that improved sealing, careful material selection and extended field testing were required before large-scale deployment.

Solar panel manufacturers sought record efficiencies as leading silicon designs neared practical limits and higher efficiency offered potential cost advantages. Many teams relied on the National Renewable Energy Laboratory (NREL) efficiency chart, which included only independently verified results. In April 2025, Longi, one of the global leaders in solar technology and a rival of Trinasolar, reported a 34.85 per cent perovskite-silicon tandem cell, highlighting rapid progress in laboratory performance. However, this competition risked diverting attention from durability testing and large-scale manufacturing challenges.

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Utilities and large buyers require long warranties, predictable degradation, and reliable supply plans before adopting new solar panel designs. Strict quality control is essential, as small defects can expand under stress and reduce performance. 

Long-term success also depends on effective encapsulation and flexible adhesives that block moisture and oxygen while withstanding heat.

Taken as a whole, certified results and supporting research suggested a practical path to increasing power output without additional sunlight. However, the key remaining challenge was demonstrating that stacked devices could remain stable, affordable, and manufacturable across different factories, operating conditions, and decades of service life.