Millisecond-pulsed photonically-annealed tin oxide electron transport layers for efficient perovskite solar cells

Menghua Zhu, Weiwei Liu, Weijun Ke, Sarah Clark, Ethan B. Secor, Tze Bin Song, Mercouri G Kanatzidis, Xin Li, Mark C Hersam

Research output: Contribution to journalArticle

13 Citations (Scopus)

Abstract

In recent years, hybrid organic-inorganic halide perovskite solar cells (PVSCs) have emerged as leading candidates for next-generation photovoltaic technologies. The architecture of PVSCs rely on charge transport layers to enable optimal efficiency and stability. In particular, tin oxide (SnO2) has been shown to be an effective electron transport layer (ETL) due to favorable energy level alignment, relatively wide band gap, and high environmental and thermal stability. However, traditional processing of SnO2 necessitates a high-temperature and/or long-duration sintering step that limits substrate choice and introduces manufacturing challenges. To overcome this limitation, we present here a rapid, low-temperature, solution-based method for SnO2 film fabrication based on intense pulsed photonic annealing. Following a comprehensive survey of the precursor solution and photonic annealing conditions, light exposure as short as 20 milliseconds is shown to provide a high-quality nanocrystalline SnO2 film at room temperature, enabling PVSCs with low hysteresis and high power conversion efficiencies exceeding 15%. Overall, this work establishes a processing pathway for SnO2-based PVSCs that is compatible with flexible substrates and high-throughput, roll-to-roll manufacturing.

Original languageEnglish
Pages (from-to)24110-24115
Number of pages6
JournalJournal of Materials Chemistry A
Volume5
Issue number46
DOIs
Publication statusPublished - Jan 1 2017

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Tin oxides
Photonics
Annealing
Substrates
Processing
Temperature
Electron energy levels
Conversion efficiency
Hysteresis
Charge transfer
Energy gap
Thermodynamic stability
Sintering
Throughput
Fabrication
Electron Transport
Perovskite solar cells
stannic oxide

ASJC Scopus subject areas

  • Chemistry(all)
  • Renewable Energy, Sustainability and the Environment
  • Materials Science(all)

Cite this

Millisecond-pulsed photonically-annealed tin oxide electron transport layers for efficient perovskite solar cells. / Zhu, Menghua; Liu, Weiwei; Ke, Weijun; Clark, Sarah; Secor, Ethan B.; Song, Tze Bin; Kanatzidis, Mercouri G; Li, Xin; Hersam, Mark C.

In: Journal of Materials Chemistry A, Vol. 5, No. 46, 01.01.2017, p. 24110-24115.

Research output: Contribution to journalArticle

Zhu, Menghua ; Liu, Weiwei ; Ke, Weijun ; Clark, Sarah ; Secor, Ethan B. ; Song, Tze Bin ; Kanatzidis, Mercouri G ; Li, Xin ; Hersam, Mark C. / Millisecond-pulsed photonically-annealed tin oxide electron transport layers for efficient perovskite solar cells. In: Journal of Materials Chemistry A. 2017 ; Vol. 5, No. 46. pp. 24110-24115.
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