Low thermal budget, photonic-cured compact TiO2 layers for high-efficiency perovskite solar cells

Sanjib Das; Gong Gu; Pooran C. Joshi; Bin Yang; Tolga Aytug; Christopher M. Rouleau; David B. Geohegan; Kai Xiao

doi:10.1039/c6ta02105k

Low thermal budget, photonic-cured compact TiO₂ layers for high-efficiency perovskite solar cells

Sanjib Das, Gong Gu, Pooran C. Joshi, Bin Yang, Tolga Aytug, Christopher M. Rouleau, David B. Geohegan, Kai Xiao

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

48 Scopus citations

Abstract

Rapid advances in organometallic trihalide perovskite solar cells (PSCs) have positioned them to be one of the leading next generation photovoltaic technologies. However, most of the high-performance PSCs, particularly those using compact TiO₂ as an electron transport layer, require a high-temperature sintering step, which is not compatible with flexible polymer-based substrates. Considering the materials of interest for PSCs and corresponding device configurations, it is technologically imperative to fabricate high-efficiency cells at low thermal budget so that they can be realized on low-temperature plastic substrates. We report on a new photonic curing technique that produces crystalline anatase-phase TiO₂ films on indium tin oxide-coated glass and flexible polyethylene terephthalate (PET) substrates. The planar PSCs, using photonic-cured TiO₂ films, exhibit PCEs as high as 15.0% and 11.2% on glass and flexible PET substrates, respectively, comparable to the device performance of PSCs incorporating furnace annealed TiO₂ films.

Original language	English
Pages (from-to)	9685-9690
Number of pages	6
Journal	Journal of Materials Chemistry A
Volume	4
Issue number	24
DOIs	https://doi.org/10.1039/c6ta02105k
State	Published - 2016

Funding

This research was conducted at the Center for Nanophase Materials Sciences (CNMS), which is a DOE Office of Science User Facility. S. D., P. J., and T. A. acknowledge support provided by a Laboratory Directed Research and Development award from Oak Ridge National Laboratory.

Funders	Funder number
Office of Science
Oak Ridge National Laboratory

UN SDGs

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

Access to Document

10.1039/c6ta02105k

Cite this

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title = "Low thermal budget, photonic-cured compact TiO2 layers for high-efficiency perovskite solar cells",

abstract = "Rapid advances in organometallic trihalide perovskite solar cells (PSCs) have positioned them to be one of the leading next generation photovoltaic technologies. However, most of the high-performance PSCs, particularly those using compact TiO2 as an electron transport layer, require a high-temperature sintering step, which is not compatible with flexible polymer-based substrates. Considering the materials of interest for PSCs and corresponding device configurations, it is technologically imperative to fabricate high-efficiency cells at low thermal budget so that they can be realized on low-temperature plastic substrates. We report on a new photonic curing technique that produces crystalline anatase-phase TiO2 films on indium tin oxide-coated glass and flexible polyethylene terephthalate (PET) substrates. The planar PSCs, using photonic-cured TiO2 films, exhibit PCEs as high as 15.0% and 11.2% on glass and flexible PET substrates, respectively, comparable to the device performance of PSCs incorporating furnace annealed TiO2 films.",

author = "Sanjib Das and Gong Gu and Joshi, {Pooran C.} and Bin Yang and Tolga Aytug and Rouleau, {Christopher M.} and Geohegan, {David B.} and Kai Xiao",

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AU - Das, Sanjib

AU - Gu, Gong

AU - Joshi, Pooran C.

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AU - Aytug, Tolga

AU - Rouleau, Christopher M.

AU - Geohegan, David B.

AU - Xiao, Kai

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AB - Rapid advances in organometallic trihalide perovskite solar cells (PSCs) have positioned them to be one of the leading next generation photovoltaic technologies. However, most of the high-performance PSCs, particularly those using compact TiO2 as an electron transport layer, require a high-temperature sintering step, which is not compatible with flexible polymer-based substrates. Considering the materials of interest for PSCs and corresponding device configurations, it is technologically imperative to fabricate high-efficiency cells at low thermal budget so that they can be realized on low-temperature plastic substrates. We report on a new photonic curing technique that produces crystalline anatase-phase TiO2 films on indium tin oxide-coated glass and flexible polyethylene terephthalate (PET) substrates. The planar PSCs, using photonic-cured TiO2 films, exhibit PCEs as high as 15.0% and 11.2% on glass and flexible PET substrates, respectively, comparable to the device performance of PSCs incorporating furnace annealed TiO2 films.

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