Journal
ADVANCED MATERIALS INTERFACES
Volume 3, Issue 13, Pages -Publisher
WILEY
DOI: 10.1002/admi.201600122
Keywords
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Funding
- Office of Naval Research [N00014-14-1-0246]
- Asian Office of Aerospace RD [FA2386-15-1-4106]
- Department of Energy SunShot [DE-EE0006710]
- Boeing-Johnson Foundation
- China Scholarship Council
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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 degrees 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 degrees 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 C-60-containing self-assembled monolayer (C-60-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.
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