期刊
ACS APPLIED MATERIALS & INTERFACES
卷 12, 期 25, 页码 28246-28252出版社
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c06318
关键词
perovskite solar cell; hole-transporting material; carbazole-based spiro[fluorene-9, 9 '-xanthene]
资金
- Global Frontier R&D and the climate change Program [NRF-2012M3A6A7054861, NRF-2015M1A2A2056542]
- National Research Foundation of Korea (NRF) - Ministry of Science, ICT & Future Planning (MSIP) [NRF-2017R1D1A1B03029832]
- Department of Science and Technology (DST-SERI) [DST/TMD/SERI/D05(C)]
- Science and Engineering Research Board (SERB Project) [CRG/2018/000032]
- Department of Science and Technology-Science and Engineering Research Board (DST-SERB), India [PDF/2016/001918]
- National Research Foundation of Korea [2012M3A6A7054861] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
For the practical application of perovskite solar cells (PSC), it is desirable to have high efficiency, long-term stability, and low manufacturing cost. Therefore, it is required to develop inexpensive and well-performing hole-transporting materials (HTMs). In this study, we synthesized SFXDAnCBZ, which is a new carbazole-based spiro[fluorene-9,9'-xanthene] (SFX) derivative, where the central core and end-cap units consist of SFX and N3,N6-bis(di-4-anisylamino)-9H-carbazole (DAnCBZ), respectively, as an efficient and low-cost HTM for PSCs. Photoluminescence quenching at the SFXDAnCBZ/perovskite interface was more effective than at the perovskite/Spiro-OMeTAD (2,2',7,7'-tetrakis-(N,N-di-p-methoxyphenyl-amine) 9,9'spiro-bifluorene) interface. We fabricated a PSC with a power conversion efficiency (PCE) of 20.87% under 1 sun illumination (100 mW cm(-2)) using SFXDAnCBZ as an HTM. This value is comparable to that measured for the benchmark Spiro-OMeTAD. Thus, this result confirms that SFX core-based materials can be a new kind of HTMs for high-efficiency and low-cost PSCs.
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