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Researchers at Nankai University in China have developed a new interface engineering method for producing copper-metallized heterojunction solar cells, according to a report published by pv magazine. The technique focuses on improving the properties of the indium tin oxide (ITO) layer, which is essential for forming an ohmic contact between the amorphous silicon layers and metal electrodes, protecting passivation layers, and enhancing optical performance by reducing reflection.
The team created a plasma interface engineering strategy using an argon-hydrogen mixture to treat the ITO. This approach addresses key challenges in electroplated metallization, including poor adhesion, high contact resistance, and limited stability. The process introduces interstitial hydrogen into the ITO lattice and increases oxygen-vacancy concentration while making the surface superhydrophilic, enabling uniform copper electroplating.
To understand the underlying mechanisms, the researchers used density functional theory calculations, finite element method simulations, and quantitative image analysis. The simulations showed that plasma-induced improvements in ITO’s electrical properties lead to a more uniform surface current distribution during electroplating, preventing uneven plating. The analysis also confirmed that ITO hydroxylation strengthens nickel ion adsorption, improving the formation of a dense and uniform nickel seed layer.
The scientists deposited ITO films on glass substrates using physical vapor deposition, then applied plasma treatment in a plasma-enhanced chemical vapor deposition system. The treatment was found to enhance electrical conductivity, reduce the work function, and improve interfacial properties, while also removing surface carbon contamination. The optimized process was integrated into a heterojunction solar cell with bifacial copper-electroplated metallization, using a sequential nickel/copper/tin electroplating process.
Tested under standard illumination, the cell achieved a power conversion efficiency of 25.2%, an open-circuit voltage of 742.1 mV, a short-circuit current density of 40.49 mA/cm², and a fill factor of 83.86%. A reference device made without the plasma treatment reached an efficiency of only 21.10%, with an open-circuit voltage of 724.1 mV and a fill factor of 71.5%.
The researchers noted that the performance gains could be scaled to larger devices, with initial samples achieving efficiencies above 24%. They indicated that this approach offers a pathway to reduce reliance on low-temperature silver pastes and address cost and supply risks linked to global silver scarcity. The findings were published in the Journal of Energy Chemistry.
Interactive table based on the Store Companies dataset for this report.
This report provides a comprehensive view of the solar cells and light-emitting diodes industry in China, tracking demand, supply, and trade flows across the national value chain. It explains how demand across key channels and end-use segments shapes consumption patterns, while also mapping the role of input availability, production efficiency, and regulatory standards on supply.
Beyond headline metrics, the study benchmarks prices, margins, and trade routes so you can see where value is created and how it moves between domestic suppliers and international partners. The analysis is designed to support strategic planning, market entry, portfolio prioritization, and risk management in the solar cells and light-emitting diodes landscape in China.
The report combines market sizing with trade intelligence and price analytics for China. It covers both historical performance and the forward outlook to 2035, allowing you to compare cycles, structural shifts, and policy impacts.
This report provides a consistent view of market size, trade balance, prices, and per-capita indicators for China. The profile highlights demand structure and trade position, enabling benchmarking against regional and global peers.
The analysis is built on a multi-source framework that combines official statistics, trade records, company disclosures, and expert validation. Data are standardized, reconciled, and cross-checked to ensure consistency across time series.
All data are normalized to a common product definition and mapped to a consistent set of codes. This ensures that comparisons across time are aligned and actionable.
The forecast horizon extends to 2035 and is based on a structured model that links solar cells and light-emitting diodes demand and supply to macroeconomic indicators, trade patterns, and sector-specific drivers. The model captures both cyclical and structural factors and reflects known policy and technology shifts in China.
Each projection is built from national historical patterns and the broader regional context, allowing the report to show where growth is concentrated and where risks are elevated.
Prices are analyzed in detail, including export and import unit values, regional spreads, and changes in trade costs. The report highlights how seasonality, freight rates, exchange rates, and supply disruptions influence pricing and margins.
Key producers, exporters, and distributors are profiled with a focus on their operational scale, geographic footprint, product mix, and market positioning. This helps identify competitive pressure points, partnership opportunities, and routes to differentiation.
This report is designed for manufacturers, distributors, importers, wholesalers, investors, and advisors who need a clear, data-driven picture of solar cells and light-emitting diodes dynamics in China.
The market size aggregates consumption and trade data, presented in both value and volume terms.
The projections combine historical trends with macroeconomic indicators, trade dynamics, and sector-specific drivers.
Yes, it includes export and import unit values, regional spreads, and a pricing outlook to 2035.
The report benchmarks market size, trade balance, prices, and per-capita indicators for China.
Yes, it highlights demand hotspots, trade routes, pricing trends, and competitive context.
Report Scope and Analytical Framing
Concise View of Market Direction
Market Size, Growth and Scenario Framing
Commercial and Technical Scope
How the Market Splits Into Decision-Relevant Buckets
Where Demand Comes From and How It Behaves
Supply Footprint and Value Capture
Trade Flows and External Dependence
Price Formation and Revenue Logic
Who Wins and Why
How the Domestic Market Works
Commercial Entry and Scaling Priorities
Where the Best Expansion Logic Sits
Leading Players and Strategic Archetypes
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World's largest monocrystalline silicon producer
Major PV manufacturer, high-efficiency cells
One of world's largest solar module producers
Leading PV module and cell manufacturer
Major LED chip and compound semiconductor producer
Global HQ in Canada, major ops in China
Major PV product manufacturer
Solar cell and module division
HJT solar cell specialist
Solar cell manufacturer
Major polysilicon and solar cell producer
Solar cell and module manufacturer
Solar cell and module producer
LED packaging and components
LED chip manufacturer
LED packaging and lighting solutions
LED packaging and components
Solar cell and module manufacturer
Solar cell producer
Crystal growth equipment and materials
Integrated circuits and LED chips
LED packaging and lighting
LED packaging and components
LED packaging and smart lighting
LED packaging and display products
LED chip technology company
LED packaging
PV manufacturing equipment
LED driver ICs and chips
LED packaging and components
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