Preparation of compact TiO2 thin film by artist spray gun-assisted pyrolysis method for lead-free perovskite solar cell

Pratheep Panneerselvam; Vignesh Murugadoss; Tae Geun Kim; Subramania Angaiah

doi:10.1007/s10854-021-05697-w

Preparation of compact TiO₂ thin film by artist spray gun-assisted pyrolysis method for lead-free perovskite solar cell

Pratheep Panneerselvam, Vignesh Murugadoss, Tae Geun Kim, Subramania Angaiah

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

In the present investigation, compact TiO₂ thin film was prepared by using an artist spray gun (ASG)-assisted pyrolysis method to use as an electron transport layer (ETL) for perovskite solar cell (PSC). The influence of the distance between the spray gun nozzle and the substrate was studied to get quality TiO₂ thin film onto FTO substrate among three different distantly deposited TiO₂ thin films. The formation of anatase TiO₂ thin film was confirmed by XRD and Raman spectroscopy studies. The bandgap of this thin film was measured by UV–Vis analysis and it was found to be 3.19 eV. The emission spectrum and charge separation of TiO₂ thin film were analysed by photoluminescence studies. The emission spectrum of TiO₂ thin film exhibited at 380 nm confirmed the indirect transition from the conduction band to the valence band. The FE-SEM image confirmed that the prepared TiO₂ thin film was uniformly deposited over the substrate without any pinhole, which shows a good agreement with the Raman mapping analysis. A power conversion efficiency (PCE) of 2.69% has been achieved with Pb-free PSC fabricated from uniformly deposited TiO₂ ETL.

Original language	English
Pages (from-to)	10412-10423
Number of pages	12
Journal	Journal of Materials Science: Materials in Electronics
Volume	32
Issue number	8
DOIs	https://doi.org/10.1007/s10854-021-05697-w
Publication status	Published - 2021 Apr

Bibliographical note

Funding Information:
Dr. AS gratefully acknowledges the Council of Scientific and Industrial Research (CSIR) New Delhi (Ref. No. 01(2810)14/EMR-II, dt. 26/04/2017) and UGC-BSR-Mid Career Award (No. F.19-214/2018(BSR)) for their financial supports. The authors also acknowledge the Central Instrumentation Facility, Pondicherry University for extending their instrumentation facilities.

Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Atomic and Molecular Physics, and Optics
Condensed Matter Physics
Electrical and Electronic Engineering

Access to Document

10.1007/s10854-021-05697-w

Cite this

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title = "Preparation of compact TiO2 thin film by artist spray gun-assisted pyrolysis method for lead-free perovskite solar cell",

abstract = "In the present investigation, compact TiO2 thin film was prepared by using an artist spray gun (ASG)-assisted pyrolysis method to use as an electron transport layer (ETL) for perovskite solar cell (PSC). The influence of the distance between the spray gun nozzle and the substrate was studied to get quality TiO2 thin film onto FTO substrate among three different distantly deposited TiO2 thin films. The formation of anatase TiO2 thin film was confirmed by XRD and Raman spectroscopy studies. The bandgap of this thin film was measured by UV–Vis analysis and it was found to be 3.19 eV. The emission spectrum and charge separation of TiO2 thin film were analysed by photoluminescence studies. The emission spectrum of TiO2 thin film exhibited at 380 nm confirmed the indirect transition from the conduction band to the valence band. The FE-SEM image confirmed that the prepared TiO2 thin film was uniformly deposited over the substrate without any pinhole, which shows a good agreement with the Raman mapping analysis. A power conversion efficiency (PCE) of 2.69% has been achieved with Pb-free PSC fabricated from uniformly deposited TiO2 ETL.",

author = "Pratheep Panneerselvam and Vignesh Murugadoss and Kim, {Tae Geun} and Subramania Angaiah",

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