Highly Efficient Perovskite Solar Cells Employing an Easily Attainable Bifluorenylidene-Based Hole-Transporting Material

Kasparas Rakstys; Michael Saliba; Peng Gao; Paul Gratia; Egidijus Kamarauskas; Sanghyun Paek; Vygintas Jankauskas; Mohammad Khaja Nazeeruddin

doi:10.1002/anie.201602545

Highly Efficient Perovskite Solar Cells Employing an Easily Attainable Bifluorenylidene-Based Hole-Transporting Material

Angew Chem Int Ed Engl. 2016 Jun 20;55(26):7464-8. doi: 10.1002/anie.201602545. Epub 2016 May 9.

Authors

Kasparas Rakstys¹, Michael Saliba¹, Peng Gao¹, Paul Gratia¹, Egidijus Kamarauskas², Sanghyun Paek¹, Vygintas Jankauskas², Mohammad Khaja Nazeeruddin^{3

4}

Affiliations

¹ Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland.
² Department of Solid State Electronics, Vilnius University, Sauletekio 9, Vilnius, 10222, Lithuania.
³ Group for Molecular Engineering of Functional Materials, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland. mdkhaja.nazzeruddin@epfl.ch.
⁴ Center of Excellence for Advanced Materials Research, King Abdulaziz University, Jeddah, Saudi Arabia. mdkhaja.nazzeruddin@epfl.ch.

PMID: 27158924
DOI: 10.1002/anie.201602545

Abstract

The 4,4'-dimethoxydiphenylamine-substituted 9,9'-bifluorenylidene (KR216) hole transporting material has been synthesized using a straightforward two-step procedure from commercially available and inexpensive starting reagents, mimicking the synthetically challenging 9,9'-spirobifluorene moiety of the well-studied spiro-OMeTAD. A power conversion efficiency of 17.8 % has been reached employing a novel HTM in a perovskite solar cells.

Keywords: bifluorenylidene; electrochemistry; hole-transporting materials; photovoltaics; solar cells.

Publication types

Research Support, Non-U.S. Gov't