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Clean interface without any intermixed state between ultra-thin P3 polymer and CHNHPbI hybrid perovskite thin film.

08:00 EDT 26th July 2019 | BioPortfolio

Summary of "Clean interface without any intermixed state between ultra-thin P3 polymer and CHNHPbI hybrid perovskite thin film."

Hole transport layers (HTL) are crucial materials to improve the power conversion efficiency in organohalide hybrid perovskite-based solar-cell applications. Two important physical properties are required in HTL materials: good hole mobility and air-protection. After HTL solution-based deposition, an intermixed chemical state at the interface between HTL and hybrid perovskite is key to confirming the physical property of HTL. We performed high-resolution x-ray photoelectron spectroscopy to investigate the chemical states at the interface between an ultra-thin P3 polymer and CHNHPbI hybrid perovskite thin film. At the interface, we found no apparent intermixed chemical state. Furthermore, we confirmed that the P3 HTL with the ultra-thin layer (7 nm) protected the hybrid perovskite material against air-exposure for 2 weeks.

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This article was published in the following journal.

Name: Scientific reports
ISSN: 2045-2322
Pages: 10853

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