期刊
MATERIALS
卷 10, 期 9, 页码 -出版社
MDPI
DOI: 10.3390/ma10091087
关键词
perovskite solar cells; hole-transporting material; printable; small-molecule; polymer; inorganic; hybrid
类别
资金
- Academy of Finland [268672]
- Fortum Foundation
- Academy of Finland (AKA) [268672, 268672] Funding Source: Academy of Finland (AKA)
Perovskite solar cells (PSCs) represent undoubtedly the most significant breakthrough in photovoltaic technology since the 1970s, with an increase in their power conversion efficiency from less than 5% to over 22% in just a few years. Hole-transporting materials (HTMs) are an essential building block of PSC architectures. Currently, 2,2',7,7'-tetrakis-(N,N'-di-p-methoxyphenylamine)9,9'-spirobifluorene), better known as spiro-OMeTAD, is the most widely-used HTM to obtain high-efficiency devices. However, it is a tremendously expensive material with mediocre hole carrier mobility. To ensure wide-scale application of PSC-based technologies, alternative HTMs are being proposed. Solution-processable HTMs are crucial to develop inexpensive, high-throughput and printable large-area PSCs. In this review, we present the most recent advances in the design and development of different types of HTMs, with a particular focus on mesoscopic PSCs. Finally, we outline possible future research directions for further optimization of the HTMs to achieve low-cost, stable and large-area PSCs.
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