What is it about?
We report here about a continuous and compact hole-blocking layer to prevent photocurrent recombination at the photoanode/electrode interface to eable a high-performance mesostructure perovskite-based solar cell.
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Why is it important?
A continuous and compact hole-blocking layer is crucial to prevent photocurrent recombination at the photoanode/electrode interface of high-performance mesostructure perovskite-based solar cells. Novel TiO2/ZnO/TiO2 sandwich multi-layer compact film prepared as hole-blocking layer for perovskite solar cell. Herein, TiO2, ZnO, and TiO2 layers were successfully deposited by spin-coating onto FTO glass substrate in sequence. The fill factor and power conversion efficiency of the perovskite solar cell are remarkably improved by the employment of a TiO2/ZnO/TiO2 sandwich compact layer. Perovskite solar cell based on TiO2/ZnO/TiO2 sandwich film has been observed to exhibit maximum incident-photon-to-current conversion efficiency in the visible region (400–780 nm) and reach a power conversion efficiency of 12.8% under AM1.5G illumination.
Perspectives
We report here close to 13% efficient perovskite solar cells with a a novel sandwich film.
Professor Peter D. Lund
Aalto University
Read the Original
This page is a summary of: TiO2/ZnO/TiO2sandwich multi-layer films as a hole-blocking layer for efficient perovskite solar cells, International Journal of Energy Research, January 2016, Wiley,
DOI: 10.1002/er.3485.
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