Influence of TiO2 compact layer precursor on the performance of perovskite solar cells

Paola Vivo; Anniina Ojanperä; Jan-Henrik Smått; Simon Sánden; Syed Ghufran Hashmi; Kimmo Kaunisto; Petri Ihalainen; Muhammad Talha Masood; Ronald Österbacka; Peter D.  Lund; Helge Lemmetyinen

doi:10.1016/j.orgel.2016.11.017

Influence of TiO₂ compact layer precursor on the performance of perovskite solar cells

Paola Vivo, Anniina Ojanperä, Jan-Henrik Smått, Simon Sánden, Syed Ghufran Hashmi, Kimmo Kaunisto, Petri Ihalainen, Muhammad Talha Masood, Ronald Österbacka, Peter D. Lund, Helge Lemmetyinen

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

35 Citations (Scopus)

Abstract

The optimization of the hole-blocking layer in perovskite solar cells (PSC), typically based on TiO₂, is crucial, as it strongly affects the device performance. In this work, we thoroughly characterize the thickness, roughness, and crystal structure of a set of TiO₂ compact layers produced by spin coating of different precursor sols and correlate the choice of the TiO₂ precursor to the photovoltaic performance of the PSC. By replacing the commonly used titanium isopropoxide (TTIP) blocking layer precursor with titanium tetrachloride (TiCl₄), a clear enhancement in the PSC performance was observed, particularly in the hysteresis behavior and stability. The results from the morphological/structural analysis and transient photoluminescence studies clarify the different behavior of the compact layers in PSCs.

Original language	English
Pages (from-to)	287-293
Journal	Organic Electronics
Volume	41
Early online date	17 Nov 2016
DOIs	https://doi.org/10.1016/j.orgel.2016.11.017
Publication status	Published - 2017
Publication type	A1 Journal article-refereed

Publication forum classification

Publication forum level 1

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This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1016/j.orgel.2016.11.017

Cite this

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title = "Influence of TiO2 compact layer precursor on the performance of perovskite solar cells",

abstract = "The optimization of the hole-blocking layer in perovskite solar cells (PSC), typically based on TiO2, is crucial, as it strongly affects the device performance. In this work, we thoroughly characterize the thickness, roughness, and crystal structure of a set of TiO2 compact layers produced by spin coating of different precursor sols and correlate the choice of the TiO2 precursor to the photovoltaic performance of the PSC. By replacing the commonly used titanium isopropoxide (TTIP) blocking layer precursor with titanium tetrachloride (TiCl4), a clear enhancement in the PSC performance was observed, particularly in the hysteresis behavior and stability. The results from the morphological/structural analysis and transient photoluminescence studies clarify the different behavior of the compact layers in PSCs.",

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AU - Vivo, Paola

AU - Ojanperä, Anniina

AU - Smått, Jan-Henrik

AU - Sánden, Simon

AU - Hashmi, Syed Ghufran

AU - Kaunisto, Kimmo

AU - Ihalainen, Petri

AU - Masood, Muhammad Talha

AU - Österbacka, Ronald

AU - Lund, Peter D.

AU - Lemmetyinen, Helge

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AB - The optimization of the hole-blocking layer in perovskite solar cells (PSC), typically based on TiO2, is crucial, as it strongly affects the device performance. In this work, we thoroughly characterize the thickness, roughness, and crystal structure of a set of TiO2 compact layers produced by spin coating of different precursor sols and correlate the choice of the TiO2 precursor to the photovoltaic performance of the PSC. By replacing the commonly used titanium isopropoxide (TTIP) blocking layer precursor with titanium tetrachloride (TiCl4), a clear enhancement in the PSC performance was observed, particularly in the hysteresis behavior and stability. The results from the morphological/structural analysis and transient photoluminescence studies clarify the different behavior of the compact layers in PSCs.

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