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Scalable fabrication of methylammonium‑free wide‑bandgap perovskite solar cells by blade coating in ambient air

09.11.25 | Shanghai Jiao Tong University Journal Center

RbI is the most effective in mitigate PbI2precipitation caused by Pb(SCN)2while maintaining large grains.Rb is kept at the grain boundaries during crystallization and Ostwald ripening, contributes to a slow growth of the grains.Wide-bandgap perovskite solar cells with blade-coated perovskite in air achieved a certified power conversion efficiency of 23%, among the highest values reported. Credit: Jianbo Liu, Meng Zhang, Xiaoran Sun, Linhu Xiang, Xiangyu Yang, Xin Hu, Zhicheng Wang, Tian Hou, Jinzhao Qin, Yuelong Huang, Mojtaba Abdi-Jalebi, Xiaojing Hao.

Wide-band-gap perovskites are the key top-cell for >30 % tandem modules, yet spin-coating and methylammonium (MA) instability block factory-scale production. Now researchers from Southwest Petroleum University, UNSW and UCL have formulated an MA-free ink that can be blade-coated in ambient air and delivers certified 23 % efficiency—one of the highest values ever reported for a 1.69 eV MA-free film.

Why This Matters

Innovative Design & Features

Applications & Future Outlook

This work offers a clear, additive-guided pathway to print stable, high-performance wide-band-gap layers under factory air—bringing low-cost, high-efficiency tandem photovoltaics one step closer to market deployment.

Nano-Micro Letters

10.1007/s40820-025-01838-6

Experimental study

Scalable Fabrication of Methylammonium‑Free Wide‑Bandgap Perovskite Solar Cells by Blade Coating in Ambient Air

1-Jul-2025

Keywords

Fabrication

Article Information

Journal

Nano-Micro Letters

DOI

10.1007/s40820-025-01838-6

Method of Research

Experimental study

Article Publication Date

2025-07-01

Article Title

Scalable Fabrication of Methylammonium‑Free Wide‑Bandgap Perovskite Solar Cells by Blade Coating in Ambient Air

Contact Information

Bowen Li

Shanghai Jiao Tong University Journal Center

qkzx@sjtu.edu.cn

Source

Original Source

https://link.springer.com/article/10.1007/s40820-025-01838-6

How to Cite This Article

APA:

Shanghai Jiao Tong University Journal Center. (2025, September 11). Scalable fabrication of methylammonium‑free wide‑bandgap perovskite solar cells by blade coating in ambient air. Brightsurf News. https://www.brightsurf.com/news/LN2WWMM1/scalable-fabrication-of-methylammoniumfree-widebandgap-perovskite-solar-cells-by-blade-coating-in-ambient-air.html

MLA:

"Scalable fabrication of methylammonium‑free wide‑bandgap perovskite solar cells by blade coating in ambient air." Brightsurf News, Sep. 11 2025, https://www.brightsurf.com/news/LN2WWMM1/scalable-fabrication-of-methylammoniumfree-widebandgap-perovskite-solar-cells-by-blade-coating-in-ambient-air.html.