Journal
NANOSCALE
Volume 10, Issue 27, Pages 13187-13193Publisher
ROYAL SOC CHEMISTRY
DOI: 10.1039/c8nr02903b
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Funding
- National Research Foundation of Korea [NRF-2015R1C1A1A02036599, 2014R1A4A1071686]
- Technology Development Program to Solve Climate Changes of the National Research Foundation (NRF) - Ministry of Science, ICT & Future Planning [NRF-2016M1A2A2940914]
- Samsung Research Funding Center of Samsung Electronics [SRFC-MA1501-06]
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We demonstrated a water-resistant PEDOT:PSS HTL by incorporating a photo-crosslinking agent into a PEDOT:PSS film. A crosslinking system was successfully formed inside the PEDOT:PSS film by simple and fast photo-polymerization of PCDSA monomers. Combination of the crosslinking system and MeOH surface treatment simultaneously improved the device efficiency and stability of both perovskite and polymer solar cells. The crosslinking system inside PEDOT:PSS changed its intrinsic water-soluble characteristic into a water-resistant property, thus preventing water penetration into the PEDOT:PSS film. In addition, MeOH treatment improved the surface conductivity and reduced the surface roughness of the PEDOT:PSS film by removing surface residues of PDAs and insulating PSS parts.
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