@article{2676e82eda9f4d928cfb4c00cffa2d7f,
title = "Dopant-free novel hole-transporting materials based on quinacridone dye for high-performance and humidity-stable mesoporous perovskite solar cells",
abstract = "This study reports three newly developed dopant-free hole-transporting materials (HTMs) for perovskite solar cells. The design is based on a quinacridone (QA) dye as the core with three different extended end-capping moieties, namely, acenaphthylene (ACE), triphenylamine (TPA) and diphenylamine (DPA), attached to the QA core. These HTMs were synthesized and used to successfully fabricate in mesoscopic TiO2/CH3NH3PbI3/HTM perovskite devices. Under AM 1.5G illumination at 100 mW cm-2, the devices achieved a maximum efficiency of 18.2% for ACE-QA-ACE, 16.6% for TPA-QA-TPA and 15.5% for DPA-QA-DPA without any additives, whereas reference devices with doped spiro-OMeTAD as the HTM achieved a PCE of 15.2%. Notably, the unencapsulated devices based on the novel dopant-free HTMs exhibited impressive stability in comparison with the devices based on doped spiro-OMeTAD under a relative humidity of 75% for 30 days. These linear symmetrical HTMs pave the way to a new class of organic hole-transporting materials for cost-efficient and large-area applications of printed perovskite solar cells.",
author = "Pham, {Hong Duc} and Jain, {Sagar M.} and Meng Li and Sergei Manzhos and Krishna Feron and Sudhagar Pitchaimuthu and Zhiyong Liu and Nunzio Motta and Hongxia Wang and Durrant, {James R.} and Prashant Sonar",
note = "Funding Information: H. D. P. and S. M. J. contributed equally to this study. H. D. P. is thankful to QUT for offering the QUTPRA scholarship to conduct his research work. Some of the data reported in this study were obtained from the Central Analytical Research Facility operated by the Institute for Future Environments (QUT). Access to the CARF was supported by generous funding from the Science and Engineering Faculty (QUT). The author S. M. J. is thankful to the Welsh Assembly Government-funded S{\^e}r Cymru Solar project, the EPSRC grants EPSRC Supergen SuperSolar Hub for an International and Industrial Engagement Award (Supergen Solar Challenge) and the Marie Curie COFUND fellowship for nancial support. The UKRI Global Challenge Research Fund project SUNRISE (EP/P032591/1). S. M. is supported by the Ministry of Education of Singapore. In addition, this project has received funding from the European Union's Horizon 2020 Research and Innovation Programme under the Marie Sk{\l}odowska-Curie grant agreement No. 663830. N. M. acknowledges the support of the Queensland government via the Q-CAS funding scheme. P. S. is thankful to QUT for nancial support and to the Australian Research Council for the Future Fellowship grant FT130101337. Publisher Copyright: {\textcopyright} 2019 The Royal Society of Chemistry.",
year = "2019",
month = mar,
day = "14",
doi = "10.1039/c8ta11361k",
language = "English",
volume = "7",
pages = "5315--5323",
journal = "Journal of Materials Chemistry A",
issn = "2050-7488",
publisher = "Royal Society of Chemistry",
number = "10",
}