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Laser-Assisted Ultrafast Fabrication of Crystalline Ta-Doped TiO(2) for High-Humidity-Processed Perovskite Solar Cells

[Image: see text] A titanium dioxide (TiO(2)) compact film is a widely used electron transport layer (ETL) for n–i–p planar perovskite solar cells (PSCs). However, TiO(2) sufferers from poor electrical conductivity, leading to high energy loss at the perovskite/ETL/transparent conductive oxide inter...

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Autores principales: Mo, Hongbo, Wang, Dong, Chen, Qian, Guo, Wei, Maniyarasu, Suresh, Thomas, Andrew G., Curry, Richard J., Li, Lin, Liu, Zhu
Formato: Online Artículo Texto
Lenguaje:English
Publicado: American Chemical Society 2022
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9098116/
https://www.ncbi.nlm.nih.gov/pubmed/35330992
http://dx.doi.org/10.1021/acsami.1c24225
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author Mo, Hongbo
Wang, Dong
Chen, Qian
Guo, Wei
Maniyarasu, Suresh
Thomas, Andrew G.
Curry, Richard J.
Li, Lin
Liu, Zhu
author_facet Mo, Hongbo
Wang, Dong
Chen, Qian
Guo, Wei
Maniyarasu, Suresh
Thomas, Andrew G.
Curry, Richard J.
Li, Lin
Liu, Zhu
author_sort Mo, Hongbo
collection PubMed
description [Image: see text] A titanium dioxide (TiO(2)) compact film is a widely used electron transport layer (ETL) for n–i–p planar perovskite solar cells (PSCs). However, TiO(2) sufferers from poor electrical conductivity, leading to high energy loss at the perovskite/ETL/transparent conductive oxide interface. Doping the TiO(2) film with alkali- and transition-metal elements is an effective way to improve its electrical conductivity. The conventional method to prepare these metal-doped TiO(2) films commonly requires time-consuming furnace treatments at 450–600 °C for 30 min to 3 h. Herein, a rapid one-step laser treatment is developed to enable doping of tantalum (Ta) in TiO(2) (Ta-TiO(2)) and to simultaneously induce the crystallization of TiO(2) films from its amorphous precursor to an anatase phase. The PSCs based on the Ta-TiO(2) films treated with the optimized fiber laser (1070 nm) processing parameters (21 s with a peak processing temperature of 800–850 °C) show enhanced photovoltaic performance in comparison to that of the device fabricated using furnace-treated films at 500 °C for 30 min. The ambient-processed planar PSCs fabricated under high relative humidity (RH) of 50–70% display power conversion efficiencies (PCEs) of 18.34% and 16.04% for devices based on Cs(0.1)FA(0.9)PbI(3) and CH(3)NH(3)PbI(3) absorbers, respectively. These results are due to the improved physical and chemical properties of the Ta-TiO(2) films treated by the optimal laser process in comparison to those for the furnace process. The laser process is rapid, simple, and potentially scalable to produce metal-doped TiO(2) films for efficient PSCs.
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spelling pubmed-90981162022-05-13 Laser-Assisted Ultrafast Fabrication of Crystalline Ta-Doped TiO(2) for High-Humidity-Processed Perovskite Solar Cells Mo, Hongbo Wang, Dong Chen, Qian Guo, Wei Maniyarasu, Suresh Thomas, Andrew G. Curry, Richard J. Li, Lin Liu, Zhu ACS Appl Mater Interfaces [Image: see text] A titanium dioxide (TiO(2)) compact film is a widely used electron transport layer (ETL) for n–i–p planar perovskite solar cells (PSCs). However, TiO(2) sufferers from poor electrical conductivity, leading to high energy loss at the perovskite/ETL/transparent conductive oxide interface. Doping the TiO(2) film with alkali- and transition-metal elements is an effective way to improve its electrical conductivity. The conventional method to prepare these metal-doped TiO(2) films commonly requires time-consuming furnace treatments at 450–600 °C for 30 min to 3 h. Herein, a rapid one-step laser treatment is developed to enable doping of tantalum (Ta) in TiO(2) (Ta-TiO(2)) and to simultaneously induce the crystallization of TiO(2) films from its amorphous precursor to an anatase phase. The PSCs based on the Ta-TiO(2) films treated with the optimized fiber laser (1070 nm) processing parameters (21 s with a peak processing temperature of 800–850 °C) show enhanced photovoltaic performance in comparison to that of the device fabricated using furnace-treated films at 500 °C for 30 min. The ambient-processed planar PSCs fabricated under high relative humidity (RH) of 50–70% display power conversion efficiencies (PCEs) of 18.34% and 16.04% for devices based on Cs(0.1)FA(0.9)PbI(3) and CH(3)NH(3)PbI(3) absorbers, respectively. These results are due to the improved physical and chemical properties of the Ta-TiO(2) films treated by the optimal laser process in comparison to those for the furnace process. The laser process is rapid, simple, and potentially scalable to produce metal-doped TiO(2) films for efficient PSCs. American Chemical Society 2022-03-25 2022-04-06 /pmc/articles/PMC9098116/ /pubmed/35330992 http://dx.doi.org/10.1021/acsami.1c24225 Text en © 2022 American Chemical Society https://creativecommons.org/licenses/by/4.0/Permits the broadest form of re-use including for commercial purposes, provided that author attribution and integrity are maintained (https://creativecommons.org/licenses/by/4.0/).
spellingShingle Mo, Hongbo
Wang, Dong
Chen, Qian
Guo, Wei
Maniyarasu, Suresh
Thomas, Andrew G.
Curry, Richard J.
Li, Lin
Liu, Zhu
Laser-Assisted Ultrafast Fabrication of Crystalline Ta-Doped TiO(2) for High-Humidity-Processed Perovskite Solar Cells
title Laser-Assisted Ultrafast Fabrication of Crystalline Ta-Doped TiO(2) for High-Humidity-Processed Perovskite Solar Cells
title_full Laser-Assisted Ultrafast Fabrication of Crystalline Ta-Doped TiO(2) for High-Humidity-Processed Perovskite Solar Cells
title_fullStr Laser-Assisted Ultrafast Fabrication of Crystalline Ta-Doped TiO(2) for High-Humidity-Processed Perovskite Solar Cells
title_full_unstemmed Laser-Assisted Ultrafast Fabrication of Crystalline Ta-Doped TiO(2) for High-Humidity-Processed Perovskite Solar Cells
title_short Laser-Assisted Ultrafast Fabrication of Crystalline Ta-Doped TiO(2) for High-Humidity-Processed Perovskite Solar Cells
title_sort laser-assisted ultrafast fabrication of crystalline ta-doped tio(2) for high-humidity-processed perovskite solar cells
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9098116/
https://www.ncbi.nlm.nih.gov/pubmed/35330992
http://dx.doi.org/10.1021/acsami.1c24225
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