A Low-Temperature, Solution Processable Tin Oxide Electron-Transporting Layer Prepared by the Dual-Fuel Combustion Method for Efficient Perovskite Solar Cells

Journal Article · Sat Apr 09 00:00:00 EDT 2016 · Advanced Materials Interfaces

DOI:https://doi.org/10.1002/admi.201600122· OSTI ID:1343578

Liu, Xiao ^[1]; Tsai, Kai-Wei ^[1]; Zhu, Zonglong ^[1]; Sun, Ye ^[2]; Chueh, Chu-Chen ^[1]; Jen, Alex K.-Y. ^[1]

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1. Univ. of Washington, Seattle, WA (United States). Dept. of Materials Science and Engineering
2. Harbin Inst. of Technology (China). Condensed Matter Science and Technology Inst., School of Science

Although tin oxide (SnO₂) has been employed recently as an efficient electron-transporter to realize highly efficient organometal halide perovskite solar cells (PVSCs), it is still quite challenging to apply it through facile solution-based synthesis at low enough temperature (<150 °C) to be compatible with the roll-to-roll printing on polymer substrates. In this work, a dual-fuel combustion method has been successfully adapted to modulate the exothermic characteristics and processing temperature (140 °C) of SnO₂ to achieve homogeneous and crystalline thin film as efficient electron-transporting layer for PVSCs. The fabricated SnO₂ film not only has high transparency (from 350 nm to near-infrared region) but also possesses good electron extraction ability, as evidenced by the efficient PL quenching in bilayered SnO₂/CH₃NH₃PbI₃ film. By passivating SnO₂ surface with a C₆₀-containing self-assembled monolayer (C₆₀-SAM), a high power conversion efficiency (PCE_max) of >15% with negligible hysteresis can be achieved in PVSC. This demonstrates the great potential of applying this dual-fuel combustion process to improve processability and charge-transporting properties of metal oxides for organic electronics applications.

• Research Organization: Univ. of Washington, Seattle, WA (United States)
• Sponsoring Organization: USDOE Office of Energy Efficiency and Renewable Energy (EERE); US Department of the Navy, Office of Naval Research (ONR); Asian Office of Aerospace R&D; Boeing–Johnson Foundation; China Scholarship Council (CSC)
• DOE Contract Number: EE0006710; N00014-14-1-0246; FA2386-15-1-4106
• OSTI ID: 1343578
• Report Number(s): DOE-UW-Jen-12
• Journal Information: Advanced Materials Interfaces, Vol. 3, Issue 13; ISSN 2196-7350
• Publisher: Wiley-VCH
• Country of Publication: United States
• Language: English

Related Subjects

14 SOLAR ENERGY
combustion method
electron-transporting materials
perovskite solar cell
self-assembly monolayer
tin oxide