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Issue 6, 2018
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A one-step laser process for rapid manufacture of mesoscopic perovskite solar cells prepared under high relative humidity

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Abstract

Mesoscopic perovskite solar cells (PSCs) containing a TiO2 mesoporous structure and a compact TiO2 film have reached the highest power conversion efficiency (PCE) and excellent stability among various PSC structures. However, conventional fabrication of the mesoscopic structure requires high-temperature heating processes that are considerably time-consuming. Current methods also make it difficult to fabricate integrated or multifunctional devices on the same substrate. Laser processing offers an opportunity to develop a rapid, localized and precise treatment without damaging the substrate or surrounding materials. Here, we demonstrate a rapid and localized one-step fiber laser process to generate both mesoporous and compact TiO2 films on tin-doped indium oxide (ITO) glass. The average PCE obtained for the PSCs by laser irradiation for 1 min, prepared under a high relative humidity of around 60% by a one-step deposition method, is equivalent to that by furnace treatment for 2 h. A fundamental understanding of the laser sintering mechanism using a fiber laser with a wavelength of 1070 nm has also been established. The use of the fiber laser with a wall-plug efficiency of over 40% offers an economically feasible, industrially viable solution to the challenge of rapid fabrication of mesoscopic PSCs and integration of multifunctional devices. In addition, it opens a novel route to manufacture tandem, patterned or aesthetic solar cells in the future.

Graphical abstract: A one-step laser process for rapid manufacture of mesoscopic perovskite solar cells prepared under high relative humidity

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Publication details

The article was received on 28 Jan 2018, accepted on 28 Mar 2018 and first published on 29 Mar 2018


Article type: Paper
DOI: 10.1039/C8SE00043C
Citation: Sustainable Energy Fuels, 2018,2, 1216-1224
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    A one-step laser process for rapid manufacture of mesoscopic perovskite solar cells prepared under high relative humidity

    Q. Chen, M. Z. Mokhtar, J. C. Ke, A. G. Thomas, A. Hadi, E. Whittaker, M. Curioni and Z. Liu, Sustainable Energy Fuels, 2018, 2, 1216
    DOI: 10.1039/C8SE00043C

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