Optimization of SnO2 electron transport layer for efficient planar perovskite solar cells with very low hysteresis

Author:

Eliwi Abed Alrhman1,Malekshahi Byranvand Mahdi1234ORCID,Fassl Paul12ORCID,Khan Motiur Rahman1ORCID,Hossain Ihteaz Muhaimeen12,Frericks Markus56ORCID,Ternes Simon12,Abzieher Tobias1,Schwenzer Jonas A.1ORCID,Mayer Thomas5ORCID,Hofmann Jan P.5ORCID,Richards Bryce S.12ORCID,Lemmer Uli12,Saliba Michael34ORCID,Paetzold Ulrich W.12ORCID

Affiliation:

1. Light Technology Institute, Karlsruhe Institute of Technology, Engesserstrasse 13, 76131 Karlsruhe, Germany

2. Institute of Microstructure Technology, Karlsruhe Institute of Technology, Hermann-von-Helmholtz-Platz 1, 76344 Eggenstein-Leopoldshafen, Germany

3. Institute for Photovoltaics (IPV), University of Stuttgart, Stuttgart, Germany

4. IEK-5 Photovoltaik, Forschungszentrum Jülich, Jülich, Germany

5. Surface Science Laboratory, Department of Materials and Earth Sciences, Technical University of Darmstadt, Otto-Berndt-Straße 3, 64287 Darmstadt, Germany

6. InnovationLab GmbH, Speyerer Straße 4, 69115 Heidelberg, Germany

Abstract

In this work, we introduce a bilayer ETL composed of lithium (Li)-doped compact SnO2 (c-SnO2) and potassium-capped SnO2 nanoparticle layers (NP-SnO2) to enhance the electron extraction and charge transport properties in perovskite solar cells, resulting in an improved PCE and a strongly reduced JV hysteresis.

Funder

Bundesministerium für Bildung und Forschung

Bundesministerium für Wirtschaft und Energie

Helmholtz Association

Deutsche Forschungsgemeinschaft

Publisher

Royal Society of Chemistry (RSC)

Subject

General Materials Science,Chemistry (miscellaneous)

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