Journal
ADVANCED SCIENCE
Volume 5, Issue 4, Pages -Publisher
WILEY
DOI: 10.1002/advs.201700811
Keywords
fluorene; materials science; organic conductor; perovskite; solar cells
Categories
Funding
- European Union [604032]
- Research Council of Lithuania [LAT-07/2016]
- EPSRC [EP/M015254/1, EP/M024881/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/M015254/1, EP/M024881/1] Funding Source: researchfish
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Novel nonspiro, fluorene-based, small-molecule hole transporting materials (HTMs) V1050 and V1061 are designed and synthesized using a facile three-step synthetic route. The synthesized compounds exhibit amorphous nature with a high glass transition temperature, a good solubility, and decent thermal stability. The planar perovskite solar cells (PSCs) employing V1050 generated an excellent power conversion efficiency of 18.3%, which is comparable to 18.9% obtained with the state-of-the-art Spiro-OMeTAD. Importantly, the devices based on V1050 and V1061 show better stability compared to devices based on Spiro-OMeTAD when aged without any encapsulation under uncontrolled humidity conditions (relative humidity around 60%) in the dark and under continuous full sun illumination.
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