Enhancing Efficiency of Perovskite Solar Cells via N-doped Graphene: Crystal Modification and Surface Passivation

Mahboubeh Hadadian; Juan-Pablo Correa-Baena; Elaheh K Goharshadi; Amita Ummadisingu; Ji-Youn Seo; Jingshan Luo; Somayeh Gholipour; Shaik M Zakeeruddin; Michael Saliba; Antonio Abate; Michael Grätzel; Anders Hagfeldt

doi:10.1002/adma.201602785

Enhancing Efficiency of Perovskite Solar Cells via N-doped Graphene: Crystal Modification and Surface Passivation

Adv Mater. 2016 Oct;28(39):8681-8686. doi: 10.1002/adma.201602785. Epub 2016 Aug 12.

Authors

Mahboubeh Hadadian^{1

2}, Juan-Pablo Correa-Baena³, Elaheh K Goharshadi^{4

5}, Amita Ummadisingu⁶, Ji-Youn Seo⁶, Jingshan Luo⁶, Somayeh Gholipour^{1

7}, Shaik M Zakeeruddin⁶, Michael Saliba⁶, Antonio Abate^{6

8}, Michael Grätzel⁶, Anders Hagfeldt⁹

Affiliations

¹ Laboratory of Photomolecular Science, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland.
² Department of Chemistry, Ferdowsi University of Mashhad, Mashhad, 91779, Iran.
³ Laboratory of Photomolecular Science, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland. juan.correa@epfl.ch.
⁴ Department of Chemistry, Ferdowsi University of Mashhad, Mashhad, 91779, Iran. gohari@um.ac.ir.
⁵ Center of Nano Research, Ferdowsi University of Mashhad, Mashhad, 91779, Iran. gohari@um.ac.ir.
⁶ Laboratory of Photonics and Interfaces, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland.
⁷ Faculty of Physics and Chemistry, Alzahra University, Tehran, 1993893973, Iran.
⁸ Adolphe Merkle Institute, University of Fribourg Ch. du. Musée 3, CH-1700, Fribourg, Switzerland.
⁹ Laboratory of Photomolecular Science, Institute of Chemical Sciences and Engineering, École Polytechnique Fédérale de Lausanne, 1015, Lausanne, Switzerland. anders.hagfeldt@epfl.ch.

PMID: 27515231
DOI: 10.1002/adma.201602785

Abstract

Controlling the morphology and surface passivation in perovskite solar cells is paramount in obtaining optimal optoelectronic properties. This study incorporates N-doped graphene nanosheets in the perovskite layer, which simultaneously induces an improved morphology and surface passivation at the perovskite/spiro interface, resulting in enhancement in all photovoltaic parameters.

Keywords: crystal growth; nitrogen-doped reduced graphene oxides; perovskite solar cells; photovoltage.