Perovskite-Silicon Tandem Commercialization Key to N-Type Solar Module Market Growth; LONGi Initiates Pilot Production

June 20, 2026

SolarQuarter International

Overview

The commercialization of perovskite-silicon tandem cells is identified as the most critical long-term development for the N-type solar module market. LONGi achieved a 33.9% efficiency record for perovskite-silicon tandem research cells in 2023 and commenced pilot production of tandem modules at its Xi’an R&D facility in November 2025. Silicon heterojunction (HJT) cells are noted as the optimal bottom cell architecture for 2-terminal perovskite-silicon tandem structures, already exceeding 33% certified cell efficiency at the research level. This technological trajectory is crucial for establishing the future market dominance of N-type modules.

In Depth

Key Findings

The commercialization of perovskite-silicon tandem cells has been identified as the most significant long-term development for the N-type solar module market. The report highlights LONGi’s achievement of a 33.9% efficiency record for its perovskite-silicon tandem research cells in 2023, followed by the initiation of pilot production for tandem modules at its Xi’an R&D facility in November 2025. This indicates that tandem technology is poised to play a central role in the N-type market’s pursuit of higher efficiencies.

Technical and Market Details

The market analysis firmly places the commercialization of perovskite-silicon tandem cells as the paramount long-term advancement within the N-type solar module sector. LONGi, a prominent industry player, demonstrated a significant breakthrough by achieving a 33.9% efficiency record for its perovskite-silicon tandem research cell in 2023. Further solidifying its commitment to this technology, LONGi commenced pilot production of tandem modules at its Xi’an R&D facility in November 2025, a critical step towards large-scale deployment. Silicon Heterojunction (HJT) cells are specifically identified as the optimal bottom cell architecture for 2-terminal perovskite-silicon tandem structures, due to their excellent surface passivation and high open-circuit voltage characteristics. These HJT cells have already achieved certified efficiencies exceeding 33% at the research level, making the perovskite-HJT combination a powerful synergy for developing next-generation ultra-high-efficiency solar cells.

Background & Context

The photovoltaic industry relentlessly pursues cost reduction and efficiency enhancement. N-type technology is progressively becoming dominant over P-type due to its superior efficiency and better performance stability. Within N-type, new cell technologies like TOPCon and HJT are competing fiercely. However, as single-junction silicon solar cells approach their theoretical efficiency limits, perovskite-silicon tandem technology stands out as the most promising approach to further boost efficiency. This tandem structure allows the perovskite layer to absorb shorter-wavelength light and the silicon layer to absorb longer-wavelength light, enabling more efficient utilization of the entire solar spectrum. The initiation of pilot production by major manufacturers like LONGi signals a steady transition of this technology from the research phase to commercialization. This shift is expected to have a profound impact on the entire market, potentially restructuring supply chains and creating new investment opportunities.

Strategic Significance & Outlook

The full-scale commercialization of perovskite-silicon tandem cells is anticipated to be the primary driver of growth in the N-type solar module market from 2026 to 2035. The 2-terminal tandem structure, particularly when utilizing HJT cells as the bottom layer, holds significant potential to establish market dominance due to its exceptional efficiency. The widespread adoption of this technology will further enhance the cost-effectiveness of solar power, accelerating the global transition to renewable energy. Investors should closely monitor advancements in this field and the expansion of production capacities, while engineers will find critical demand for skills related to the design and manufacturing of these next-generation high-efficiency modules. The market outlook clearly indicates a future shaped by the innovation in high-efficiency tandem technology.

Source: https://solarquarter.com/2026/06/19/n-type-solar-module-market-share-outlook-2026-2035/

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