A Low-Temperature, Solution Processable Tin Oxide Electron-Transporting Layer Prepared by the Dual-Fuel Combustion Method for Efficient Perovskite Solar Cells
- Univ. of Washington, Seattle, WA (United States). Dept. of Materials Science and Engineering
- 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 (PCEmax) 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
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