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Scientists at Japan’s National Institute of Advanced Industrial Science and Technology have recorded a power conversion efficiency of 12.28% in a solar cell using a copper gallium selenide absorber. According to a report from pv magazine, the result is noted as the highest for indium-free wide-bandgap chalcogenide solar cells within a specific energy range.
The copper gallium selenide material is a direct bandgap semiconductor with properties suitable for absorbing sunlight. It has a high absorption coefficient and exhibits tolerance to defects, which helps maintain performance.
The device is an advancement on a cell design from 2024. It incorporates aluminum in the backside region of the absorber films to create a back-surface field, which improves voltage and carrier collection. The cell structure includes a molybdenum back contact on a glass substrate, the absorber layer, a cadmium sulfide buffer, a zinc oxide window layer, and a front electrode.
Fabrication involves sputtering, high-temperature deposition, selenization, and chemical bath deposition. Adjustments to the aluminum distribution and buffer layer thickness contributed to the performance increase. The cell’s certified metrics include an open-circuit voltage of 0.996 volts and a short-circuit current of 17.90 milliamps per square centimeter.
The previous iteration from 2024 achieved an efficiency of 12.25%. The research, detailed in the journal ScienceAdvances, is described as fundamental work focused on developing wide-bandgap devices for potential use in tandem solar cell structures. The team states that the technology is not yet at a stage for mass production or detailed cost analysis.
This report provides a comprehensive view of the solar cells and light-emitting diodes industry in Japan, 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 Japan.
The report combines market sizing with trade intelligence and price analytics for Japan. 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 Japan. 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 Japan.
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 Japan.
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 Japan.
Yes, it highlights demand hotspots, trade routes, pricing trends, and competitive context.
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