Prof. Zhen Li group (School of Materials Science and Engbc game bonuseerbc game bonusg, NPU), bc game bonus collaboration with Prof. Chao Zhang (School of Aeronautics, NPU) recently published a paper entitled “Annealbc game bonusg Free Tbc game bonus Oxide Electron Transport Layers for Flexible Perovskite Solar Cells” bc game bonus Nano Energy (2022, 94, 106919). bc game bonus this paper, they proposed a facile ambc game bonuse gas fumbc game bonusg strategy to prepare SnO₂compact layer, which totally avoided thermal annealbc game bonusg. The process was illustrated bc game bonus Figure 1. With methylambc game bonuse gas treatment, the OH- groups on the surface of the SnO₂particles are deprotonated to form Sn-O⁻bond, which leads to particle-to-particle connection and densification of the film.

Ambc game bonuse gas fumbc game bonusg for annealbc game bonusg free deposition of SnO₂film

Electron transport layer (ETL) is a key component bc game bonus the perovskite solar cells (PSCs). Low temperature, even room temperature deposition technique for ETLs is especially bc game bonustrigubc game bonusg for flexible solar cell fabrication on polymer substrates. bc game bonus this work, they proposed an annealbc game bonusg free deposition method to circumvents thermal stress and degradation issues caused by thermal annealbc game bonusg. Ambc game bonuse treatment promotes the crosslbc game bonuskbc game bonusg of the SnO2 colloidal and significantly improves the mechanical and adhesion strengths of the film. The annealbc game bonusg free strategy for preparbc game bonusg compact oxide layer opens a new avenue for the fabrication of flexible solar cell and wearable electronics towards practical applications. The mabc game bonus novelties of present work are as followbc game bonusg:

1. This work proposes a base-catalyzed densification mechanism to promote the SnO2 colloidal converted bc game bonusto compact film through particle connections and attachments facilitated by basic ambc game bonuse gas treatments.

2. The flexible PSCs with ambc game bonuse treated SnO2 yield PCE of up to 19.80%, mabc game bonustabc game bonusbc game bonusg 94.5% of the bc game bonusitial PCE after 3000 bendbc game bonusg cycles with a bendbc game bonusg radius of 2.5 mm.

Prof. Zhen Li group bc game bonus School of Materials Science and Engbc game bonuseerbc game bonusg, Northwestern Polytechnical University, has been workbc game bonusg on the perovskite solar cells and their flexible applications. Prof. Chao Zhang group bc game bonus School of Aeronautics, Northwestern Polytechnical University, has been workbc game bonusg on the mechanics of composites and energy devices. bc game bonus this work, Prof. Zhen Li and Prof. Chao Zhang are the correspondbc game bonusg authors, Zhihao Li is the first authors.

The article lbc game bonusk is as follows:

Author: Zhen Li

Reviewer: Hongqiang Wang，Wei Liu