Inverted Perovskite Photovoltaics Using Flame Spray Pyrolysis Solution Based CuAlO2/Cu-O Hole-Selective Contact

Achilleas Savva; Ioannis T Papadas; Dimitris Tsikritzis; Apostolos Ioakeimidis; Fedros Galatopoulos; Konstantinos Kapnisis; Roland Fuhrer; Benjamin Hartmeier; Marek F Oszajca; Norman A Luechinger; Stella Kennou; Gerasimos S Armatas; Stelios A Choulis

doi:10.1021/acsaem.9b00070

Inverted Perovskite Photovoltaics Using Flame Spray Pyrolysis Solution Based CuAlO₂/Cu-O Hole-Selective Contact

ACS Appl Energy Mater. 2019 Mar 25;2(3):2276-2287. doi: 10.1021/acsaem.9b00070. Epub 2019 Feb 25.

Affiliations

¹ Molecular Electronics and Photonics Research Unit, Department of Mechanical Engineering and Materials Science and Engineering, Cyprus University of Technology, Limassol, 3603, Cyprus.
² Avantama, Ltd., Laubisrutistrasse 50, CH-8712 Staefa, Switzerland.
³ Department of Chemical Engineering, University of Patras, 26504, Patras, Greece.
⁴ Department of Materials Science and Technology, University of Crete, Heraklion 71003, Greece.

Abstract

We present the functionalization process of a conductive and transparent CuAlO₂/Cu-O hole-transporting layer (HTL). The CuAlO₂/Cu-O powders were developed by flame spray pyrolysis and their stabilized dispersions were treated by sonication and centrifugation methods. We show that when the supernatant part of the treated CuAlO₂/Cu-O dispersions is used for the development of CuAlO₂/Cu-O HTLs the corresponding inverted perovskite-based solar cells show improved functionality and power conversion efficiency of up to 16.3% with negligible hysteresis effect.