Trina Solar Achieves New World Record with 907W Perovskite/Silicon Tandem Module, 29.2% Efficiency on Industry Standard Size for Mass Application

EnergyTrend China

Overview

Trina Solar announced a new world record with its self-developed perovskite/crystalline silicon tandem solar module, achieving a peak power output of 907W and a full-area module efficiency of 29.2% on an industry-standard 3.1 square meter size. This breakthrough, validated by TÜV SÜD, is attributed to the company’s 210mm large-size tandem cell technology system, which involved enhancing perovskite film uniformity, innovating interface passivation solutions, and fine-tuning tandem spectral absorption adaptability. The standardized industrial size design indicates strong feasibility for large-scale industrial applications.

In Depth

Key Findings

Trina Solar, a leading Chinese photovoltaic manufacturer, has announced a new world record for its perovskite/crystalline silicon tandem solar module, achieving a peak power output of 907W and a full-area module conversion efficiency of 29.2% on an industry-standard 3.1 square meter size. This groundbreaking achievement, validated by TÜV SÜD in Germany, marks a crucial milestone towards the large-scale commercialization of perovskite solar cells. The fact that this module achieves high efficiency in a standard industrial size significantly shortens its path to practical application.

Technical Details

This record was made possible by multiple technological innovations within Trina Solar’s 210mm large-size tandem cell technology system. Key advancements include:

• Improved Perovskite Film Uniformity: Establishment of a uniform perovskite layer deposition technique over large-area substrates, ensuring high efficiency and reproducibility.
• Innovative Interface Passivation Solutions: Introduction of advanced passivation technologies to minimize recombination losses at the interface between the perovskite and silicon layers.
• Fine-Tuning of Tandem Spectral Absorption Adaptability: Optimization of the spectral response to allow the top perovskite layer and bottom silicon layer to absorb different wavelengths of sunlight with maximum efficiency.
• Large-Area Perovskite Film Deposition: Enhanced process control in large-scale production through roll-to-roll slot-die coating, vapor-assisted crystallization, and integration of an ITO tunneling layer.

These technologies suppress efficiency degradation at the module level and, combined with high-reliability encapsulation, contribute to long-term performance stability.

Background & Context

As the efficiency limits of conventional silicon solar cells are approached, perovskite-silicon tandem technology is considered the most promising approach for achieving even higher conversion efficiencies. Trina Solar’s achievement is particularly significant because it is not merely a laboratory record but a record for an industrially applicable, large-scale module. This clearly indicates that perovskite technology is transitioning to the next phase of commercialization, intensifying competition in the global solar market. China leads the world in perovskite solar cell R&D and manufacturing, and this announcement further solidifies its position.

Strategic Significance & Outlook

With this world record, Trina Solar aims to play a leading role in the commercialization of next-generation solar cell technology. The adoption of a standardized industrial size design will facilitate integration into existing solar power systems and promote adoption across a wide range of applications, including Building-Integrated Photovoltaics (BIPV) and utility-scale power plants. The company is expected to continue accelerating the market introduction of high-efficiency, low-cost perovskite tandem modules through ongoing R&D and technological innovation, thereby making a significant contribution to the global renewable energy transition.