Influence of Thiazole-Modified Carbon Nitride Nanosheets with Feasible Electronic Properties on Inverted Perovskite Solar Cells

Daniel Cruz; Jose Garcia Cerrillo; Baris Kumru; Ning Li; Jose Dario Perea; Bernhard V K J Schmidt; Iver Lauermann; Christoph J Brabec; Markus Antonietti

doi:10.1021/jacs.9b03639

Influence of Thiazole-Modified Carbon Nitride Nanosheets with Feasible Electronic Properties on Inverted Perovskite Solar Cells

J Am Chem Soc. 2019 Aug 7;141(31):12322-12328. doi: 10.1021/jacs.9b03639. Epub 2019 Jul 30.

Authors

Daniel Cruz¹, Jose Garcia Cerrillo², Baris Kumru¹, Ning Li^{2

3}, Jose Dario Perea^{2

4}, Bernhard V K J Schmidt¹, Iver Lauermann⁵, Christoph J Brabec^{2

6}, Markus Antonietti¹

Affiliations

¹ Department of Colloid Chemistry , Max-Planck-Institute of Colloids and Interfaces , Am Mühlenberg 1 , 14476 Potsdam , Germany.
² Institute of Materials for Electronics and Energy Technology (i-MEET) , Friedrich-Alexander University Erlangen-Nürnberg , Martensstraße 7 , 91058 Erlangen , Germany.
³ National Engineering Research Center for Advanced Polymer Processing Technology , Zhengzhou University , Zhengzhou 450002 , China.
⁴ Photovoltaic Research Laboratory , Massachusetts Institute of Technology (MIT) , Cambridge , Massachusetts 02139 , United States.
⁵ Kompetenzzentrum Dünnschicht- und Nanotechnologie für Photovoltaik Berlin (PVcomB) , Helmholtz-Zentrum Berlin für Materialien und Energie GmbH , Schwarzschildstraße 3 , D-12489 Berlin , Germany.
⁶ Helmholtz-Institute Erlangen-Nürnberg for Renewable Energy (HI-ErN) , Immerwahrstraße 2 , 91058 Erlangen , Germany.

PMID: 31310113
DOI: 10.1021/jacs.9b03639

Abstract

Effective, solution-processable designs of interfacial electron-transporting layers (ETLs) or hole-blocking layers are promising tools in modern electronic devices, e.g., to improve the performance, cost, and stability of perovskite-based solar cells. Herein, we introduce a facile synthetic route of thiazole-modified carbon nitride with 1.5 nm thick nanosheets which can be processed to a homogeneous, metal-free ETL for inverted perovskite solar cells. We show that thiazole-modified carbon nitride enables electronic interface enhancement via suppression of charge recombination, achieving 1.09 V in V_oc and a rise to 20.17 mA/cm² in J_sc. Hence, this report presents the successful implementation of a carbon-nitride-based structure to boost charge extraction from the perovskite absorber toward the electron transport layer in p-i-n devices.