@article{9a0fcd1feeb14b0a817eab1304ae9a8f,
title = "A novel perylene diimide-based zwitterion as the cathode interlayer for high-performance perovskite solar cells",
abstract = "Perovskite solar cells (PSCs) have attracted widespread and intense interest because of their excellent device performance. However, the existence of poor interface contacts and energy losses in the device are key challenges for the development of PSCs in the future. In this work, we developed a novel perylene diimide-based zwitterion (QAPDI) as a cathode interlayer to improve the device performance of inverted PSCs. QAPDI exhibits excellent solubility, appropriate energy levels, and high electron mobility, suggesting that it is a suitable interlayer engineering material in inverted PSCs. The use of QAPDI as a cathode interlayer between the PCBM layer and metal electrode could improve the interface contact and reduce the energy level barrier, thus facilitating efficient electron injection and transport. Moreover, the application of QAPDI could obstruct the permeation of moisture into the perovskite film to reform the device stability. As a consequence, the optimal QAPDI-based device efficiency reached 20.55% together with enhanced device stability compared with that of the control device (18.6%). This work provides an excellent alternative cathode interlayer material for high-performance inverted PSCs.",
author = "Helin Wang and Jun Song and Junle Qu and Jiarong Lian and Qian, {Peng Cheng} and Wong, {Wai Yeung}",
note = "Funding Information: W.-Y. W. would like to thank the Science, Technology and Innovation Committee of Shenzhen Municipality (JCYJ20180507183413211); the National Natural Science Foundation of China (51873176); the Hong Kong Research Grants Council (PolyU 123384/16P, C5037-18G); the Hong Kong Polytechnic University (1-ZE1C); and the Endowed Professorship in Energy from Ms Clarea Au (847S) for the nancial support. This work was partially supported by the National Key R&D Program of China (2018YFC0910602); the National Natural Science Foundation of China (61775145, 61525503, 61620106016, and 61835009); the China Postdoctoral Science Foundation Funded Project (2018M643147); the (Key) Project of Department of Education of Guangdong Province (2016KCXTD007); the Natural Science Foundation of Guangdong Province (2019A1515011125); the Science and Technology Project of Shenzhen City (JCYJ20190808173813204). P.-C. Q. thanks the Foundation of Wenzhou Science & Technology Bureau (No. W20170003) and the National Natural Science Foundation of China (No. 21828102) for the support. Funding Information: W.-Y. W. would like to thank the Science, Technology and Innovation Committee of Shenzhen Municipality (JCYJ20180507183413211); the National Natural Science Foundation of China (51873176); the Hong Kong Research Grants Council (PolyU 123384/16P, C5037-18G); the Hong Kong Polytechnic University (1-ZE1C); and the Endowed Professorship in Energy from Ms Clarea Au (847S) for the financial support. This work was partially supported by the National Key R&D Program of China (2018YFC0910602); the National Natural Science Foundation of China (61775145, 61525503, 61620106016, and 61835009); the China Postdoctoral Science Foundation Funded Project (2018M643147); the (Key) Project of Department of Education of Guangdong Province (2016KCXTD007); the Natural Science Foundation of Guangdong Province (2019A1515011125); the Science and Technology Project of Shenzhen City (JCYJ20190808173813204). P.-C. Q. thanks the Foundation of Wenzhou Science & Technology Bureau (No. W20170003) and the National Natural Science Foundation of China (No. 21828102) for the support. Publisher Copyright: {\textcopyright} The Royal Society of Chemistry 2020.",
year = "2020",
month = sep,
day = "21",
doi = "10.1039/d0ta06006b",
language = "English",
volume = "8",
pages = "18117--18124",
journal = "Journal of Materials Chemistry A",
issn = "2050-7488",
publisher = "Royal Society of Chemistry",
number = "35",
}
