期刊
CHEMICAL ENGINEERING JOURNAL
卷 427, 期 -, 页码 -出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.cej.2021.131609
关键词
Dopant-free hole-transporting material; Cyclopenta[2,1-b;3,4-b '] dithiophene; Fully printed perovskite solar cell; Thermal-assisted blade-coating
资金
- Ministry of Science and Technology, Taiwan [MOST 108-2628-E-182-003-MY3, MOST 109-2113-M-031-007-]
- Chang Gung University [QZRPD181]
- Chang Gung Memorial Hospital, Linkou, Taiwan [CMRPD2J0041]
A new donor-acceptor-donor type hole-transporting material CB was synthesized and used in fully printed PSCs, achieving an impressive power conversion efficiency of up to 21.09% with improved long-term stability. The CB-based devices showed better performance compared to those using doped spiro-OMeTAD under the same conditions, demonstrating CB's potential as a promising candidate for high-performance fully printable PSCs.
As the performance in terms of efficiency and device stability of perovskite solar cells (PSCs) has made rapid progress in a short period of time, the upscaling of PSCs becomes an important issue for massive commercial applications, where the cost of device manufacturing is a determining factor for wide spread uses. Device fabrication by printing technique is one such low-cost process for large scale preparation. However, one of the reasons limiting the progress of a fully printed PSCs is the lack of appropriate hole-transporting materials (HTMs) that can be printed. Herein, a new donor-acceptor-donor (D-A-D) type hole-transporting material with 4-dicyanomethylene-4H-cyclopenta[2,1-b;3,4-b']dithiophene (diCN-CPDT) core tethered with two bis(alkoxy) diphenylaminocarbazole periphery groups, namely CB, was synthesized and applied as dopant-free HTM in fully printed PSCs by thermal-assisted blade-coating (TABC) method. The PSCs fabricated by fully scalable processes based on dopant-free CB as HTM exhibited an impressive power conversion efficiency (PCE) up to 21.09%, which is higher than that of devices with doped 2,2',7,7'-tetrakis-(N,N-di-p-methoxyphenylamine)9,9'-spirobifluorene (spiro-OMeTAD) (14.28%) under the same fabricating condition. Furthermore, the all TABC process is demonstrated to produce an area of 10 cm x 10 cm for the devices except for electrode with an average PCE of 19.68%. Additionally, the TABC-based dopant-free CB-based PSCs exhibited significantly improved long-term stability, retaining more than 94% PCE after 500 h compared to that using doped spiro-OMeTAD under a relative humidity of similar to 50%. This result demonstrated that the newly developed CB is a promising candidate HTM for high-performance fully printable PSCs.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据