Chinese Academy of Sciences researchers boost large scale perovskite solar module efficiency to twenty three percent using nanoseed technology

Chinese Academy of Sciences researchers use crystal-solvate nanoseeds to improve inverted perovskite solar cells, reaching 23.15% efficiency in large modules.

By: AXL Media

Published: Mar 2, 2026, 10:50 AM EST

Source: The information in this article was sourced from ScienceDaily

Advantages of Inverted Perovskite Architecture

Perovskite solar cells (PSCs) have gained international attention as a low-cost, highly efficient alternative to traditional silicon photovoltaics. Researchers are increasingly focusing on the "inverted" structure, which swaps the electron and hole transport layers to improve compatibility with scalable, solution-based manufacturing. While the conventional layout has performed well in laboratory settings, the inverted architecture is better suited for the large-area production required for commercial solar panels.

The Challenge of the Buried Interface

Despite the potential of inverted PSCs, their performance has long been hindered by defects at the "buried interface"—the hidden junction where the perovskite light-absorbing layer meets the hole transport layer. During the fabrication process, microscopic irregularities and electronic voids often form at this contact point, leading to significant losses in efficiency and long-term durability. These defects act as traps for electrical charges, reducing the overall power output of the device.

Crystal-Solvate Nanoseeding Technique

To address these interfacial issues, a research team from the Qingdao Institute of Bioenergy and Bioprocess Technology introduced a technique using crystal-solvate (CSV) nanoseeds. The process involves depositing engineered nanocrystals (PDPbI4·DMSO) onto the substrate before the perovskite layer is formed. These rod-shaped seeds serve as a structural template, guiding the growth of the perovskite crystals and ensuring a smoother, more uniform material distribution across the surface.