期刊
ADVANCED ENERGY MATERIALS
卷 8, 期 21, 页码 -出版社
WILEY-V C H VERLAG GMBH
DOI: 10.1002/aenm.201800538
关键词
dopant-free hole-transporting materials; large-area perovskite solar cells; low-cost; N,N '-bicarbazole
类别
资金
- National Key Research and Development Program of China [2017YFB0404500]
- National Basic Research Program of China Fundamental Studies of Perovskite Solar Cells [2015CB932200]
- National Natural Science Foundation of China [21404057, 51672202, 61405091, 61634001, 11474146]
- Natural Science Foundation of Jiangsu Province [BK20140948, BK20140952, BK20150043]
- Natural Science Fund for Colleges and Universities in Jiangsu Province [14KJB430016]
- Innovative Research Funds of SKLWUT [2016IVA088]
- Synergetic Innovation Center for Organic Electronics and Information Displays
- Australian Centre for Advanced Photovoltaics (ACAP)
- ARC Centre of Excellence in Exciton Science
Despite the recent unprecedented development of efficient dopant-free hole transporting materials (HTMs) for high-performance perovskite solar cells (PSCs) on small-area devices (<= 0.1 cm(2)), low-cost dopant-free HTMs for large-area PSCs (<= 1 cm(2)) with high power conversion efficiencies (PCEs) have rarely been reported. Herein, two novel HTMs, 3,3', 6,6' (or 2,2', 7,7')-tetrakis(N, N'-di-p-methoxyphenylamine)-N, N'-bicarbazole (3,6 BCz-OMeTAD or 2,7 BCz-OMeTAD), are synthesized via an extremely simple route from very cheap raw materials. Owing to their excellent film-forming abilities and matching energy levels, 3,6 BCz-OMeTAD and 2,7 BCz-OMeTAD can be successfully employed as a perfect ultrathin (approximate to 30 nm) hole transporting layer in large-area PSCs up to 1 cm(2). The 3,6 BCz-OMeTAD and 2,7 BCz-OMeTAD based large-area PSCs show highest PCEs up to 17.0% and 17.6%, respectively. More importantly, high performance large-area PSCs based on 2,7 BCz-OMeTAD retain 90% of the initial efficiency after 2000 h storage in an ambient environment without encapsulation.
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