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PyDANCBZ_HTM.pdf (1.39 MB)

Pyridine Bridging Diphenylamine-Carbazole with Linking Topology as Rational Hole Transporter for Perovskite Solar Cells Fabrication

preprint
submitted on 15.04.2020 and posted on 20.04.2020 by Peng Huang, Manju -, Samrana Kazim, Gangala Sivakumar, Manuel Salado, Rajneesh Misra, Shahzada Ahmad

Developing cost-effective and rational hole transporting materials is critical for fabricating high-performance perovskite solar cells (PSCs) and to promote their commercial endeavor. We have designed and developed pyridine (core) bridging diphenylamine-substituted carbazole (arm) small molecules, named as 2,6PyDANCBZ and 3,5PyDANCBZ. The linking topology of core and arm on their photophysical, thermal, semiconducting and photovoltaic properties were probed systematically. We found that the 2,6PyDANCBZ shows higher mobility and conductivity along with uniform film-forming ability as compared to 3,5PyDANCBZ. The PSCs fabricated with 2,6PyDANCBZ supersede the performance delivered by Spiro-OMeTAD, and importantly also gave improved long-term stability. Our findings put forward small molecules based on core-arm linking topology for cost-effective hole selective layers designing.

Funding

H2020-European Research Council

History

Email Address of Submitting Author

shahzada.ahmad@bcmaterials.net

Institution

BCMaterials-Basque Center for materials, Applications & Nanostructures

Country

Spain

ORCID For Submitting Author

0000-0002-1218-2556

Declaration of Conflict of Interest

no conflict of interest to declare

Version Notes

Submitted version

Exports