Regensburg 2022 – scientific programme
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CPP: Fachverband Chemische Physik und Polymerphysik
CPP 12: Poster 1
CPP 12.67: Poster
Monday, September 5, 2022, 18:00–20:00, P1
PbS quantum dot solar cells with a IZO buffer layer at quantum dot/ZnO interface — •Huaying Zhong1, Wei Chen1,2, Lukas V. Spanier1, Christopher R. Everett1, Manuel A. Reus1, Xinyu Jiang1, Shanshan Yin1, Marlene Sophie Härtel3, Jiahuan Zhang3, Bertwin Bilgrim Otto Seibertz4, Matthias Schwartzkopf5, Stephan V. Roth5, and Peter Müller-Buschbaum1,6 — 1TU München, Physik-Department, 85748 Garching, Germany — 2James-Franck-Straße 1 — 3HZB, Solar Energy, 14109 Berlin — 4TU Berlin, Department of Technology for Thin-film Components, 10623 Berlin — 5DESY, 22607 Hamburg — 6MLZ, TU München, 85748 Garching
Colloidal quantum dots (CQDs) have generated great interests in various optoelectronic devices due to their size-tunable bandgap, low-temperature solution processability. Lead sulfide (PbS) CQDs with large Bohr radius enable solar cells to harvest infrared photons of the solar spectrum beyond the absorption edge of crystalline silicon and perovskites. Interface engineering, as one of strategies to improve device performance, is designed to form an energy cascade to enable an efficient charge transfer and promote exciton dissociation. Moreover, it can also offer good interfacial contact and improve device air stability by selecting appropriate materials. Here, we sputter the indium zinc oxide (IZO) as the interlayer between PbS QDs absorption layer and ZnO nanoparticle (NP) electron transport layer (ETL), to fabricate PbS QD solar cells and study the trap densities and charge transport process at QDs interfaces.