Nanjing University and Renshine Solar Certify 22.0% Efficiency in 0.72 m² Perovskite Module, Advancing Mass Production Scale

August 23, 2026

XenoSpectrum China

Overview

Researchers from Nanjing University and Renshine Solar have reported a third-party certified power conversion efficiency of 22.0% for a large-area, 0.72 square meter (1.2m × 0.6m) single-junction perovskite solar module. This work, published as “Lead carboxylates passivation for meter-scale perovskite solar modules,” demonstrates a significant reduction in efficiency loss during large-area scaling. The module also underwent 1,300 hours of damp heat testing and a three-month outdoor comparative test, providing critical reliability data for the commercialization of large-scale perovskite solar cells.

In Depth

Key Findings

A research collaboration between Nanjing University and Renshine Solar in China has reported a third-party certified power conversion efficiency of 22.0% for an exceptionally large single-junction perovskite solar module, measuring 0.72 square meters (1.2m × 0.6m). This achievement represents a groundbreaking advance in significantly mitigating efficiency loss during module scale-up, marking a crucial step towards the commercial mass production of perovskite solar cells.

Technical / Clinical Details

This high efficiency is based on technology detailed in their study, “Lead carboxylates passivation for meter-scale perovskite solar modules.” Specifically, lead carboxylate passivation contributed to reducing defect density and optimizing charge transport pathways in large-area devices, thereby suppressing efficiency degradation. This technique is vital for enhancing reproducibility and uniformity in the manufacturing process.

Certified Efficiency: Achieved 22.0% power conversion efficiency for a 0.72 square meter (120 cm × 60 cm) single-junction perovskite solar module, certified by an independent third party.
Stability Testing: As part of rigorous reliability evaluation, 1,300 hours of damp heat testing (85°C, 85% relative humidity) were conducted, confirming the module’s robustness.
Real-World Assessment: Furthermore, a three-month outdoor comparative test was performed, collecting valuable data on performance and durability under actual operating conditions. This demonstrated the potential for laboratory-level performance to be maintained in real-world environments.

Background & Context

Perovskite solar cells hold immense promise as a next-generation photovoltaic technology due to their theoretically high conversion efficiency and potential for low-cost manufacturing. However, a longstanding challenge has been the decline in efficiency when scaling from high-performing small-area cells to larger modules. This research is profoundly significant for the industry, as it overcomes this “large-area efficiency loss” barrier to commercialization with concrete technological solutions and rigorous validation data.

Strategic Significance & Outlook

Achieving 22.0% efficiency at a practical scale of 0.72 square meters, coupled with successful reliability testing, strongly indicates that perovskite solar cells can become a formidable alternative, or even superior, to existing silicon-based solar cells in a wide range of markets, including residential rooftops and large-scale solar farms. This advancement will accelerate the commercialization of perovskite technology through improved manufacturing processes and enhanced reliability, contributing significantly to global renewable energy targets.

Source: https://xenospectrum.com/en/meter-scale-perovskite-module/

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