Influence of Alkoxy Chain Length on the Properties of Two-Dimensionally Expanded Azulene-Core-Based Hole-Transporting Materials for Efficient Perovskite Solar Cells

Chemistry : a European Journal
Minh Anh TruongAtsushi Wakamiya

Abstract

A series of two-dimensionally expanded azulene-core-based π systems have been synthesized with different alkyl chain lengths in the alkoxy moieties connected to the partially oxygen-bridged triarylamine skeletons. The thermal, photophysical, and electronic properties of each compound were evaluated to determine the influence of the alkyl chain length on their effectiveness as hole-transporting materials (HTMs) in perovskite solar cells (PSCs). All the synthesized molecules showed promising material properties, including high solubility, the formation of flat and amorphous films, and optimal alignment of energy levels with perovskites. In particular, the derivatives with methyl and n-butyl in the side chains retained amorphous stability up to 233 and 159 °C, respectively. Such short alkoxy chains also resulted in improved electrical device properties. The PSC device fabricated with the HTM with n-butyl side chains showed the best performance with a power conversion efficiency of 18.9 %, which compares favorably with that of spiro-OMeTAD-based PSCs (spiro-OMeTAD=2,2',7,7'-tetrakis[N,N-bis(p-methoxyphenyl)amino]-9,9'-spirobifluorene).

References

Oct 1, 1987·Applied Biochemistry and Biotechnology·R J Linhardt
Apr 16, 2009·Journal of the American Chemical Society·Akihiro KojimaTsutomu Miyasaka
Feb 13, 2014·Angewandte Chemie·Samrana KazimShahzada Ahmad
Apr 9, 2014·Nature Communications·Valerio D'InnocenzoAnnamaria Petrozza
Aug 19, 2015·Journal of the American Chemical Society·Jing CaoNanfeng Zheng
Dec 3, 2015·Journal of the American Chemical Society·Kasparas RakstysMohammad Khaja Nazeeruddin
Dec 15, 2015·Journal of the American Chemical Society·Hidetaka NishimuraYasujiro Murata
Jan 23, 2016·Accounts of Chemical Research·Jin-Wook LeeNam-Gyu Park
Feb 16, 2016·Journal of the American Chemical Society·Chuyi HuangHongzheng Chen
Apr 12, 2016·Angewandte Chemie·Agustín Molina-OntoriaNazario Martín
Oct 16, 2016·Angewandte Chemie·Laura CalióShahzada Ahmad
Apr 22, 2017·The Journal of Organic Chemistry·Hidetaka NishimuraYasujiro Murata
Jun 2, 2017·Nature Communications·G GranciniMohammad Khaja Nazeeruddin
Dec 7, 2017·Journal of the American Chemical Society·Weijun KeMercouri G Kanatzidis
May 4, 2018·Advanced Science·Šarūnė Daškevičiū TėVytautas Getautis
Oct 5, 2018·Chemical Society Reviews·Javier Urieta-MoraNazario Martín

❮ Previous
Next ❯

Citations

Sep 4, 2021·Chemistry of Materials : a Publication of the American Chemical Society·Deimante VaitukaityteMohammad Khaja Nazeeruddin

❮ Previous
Next ❯

Related Concepts

Related Feeds

Adult Stem Cells

Adult stem cells reside in unique niches that provide vital cues for their survival, self-renewal, and differentiation. They hold great promise for use in tissue repair and regeneration as a novel therapeutic strategies. Here is the latest research.