Haddad, Jinane ORCID: 0000-0003-3747-0412, Krogmeier, Benedikt, Klingebiel, Benjamin, Krueckemeier, Lisa, Melhem, Stephanie, Liu, Zhifa, Huepkes, Juergen, Mathur, Sanjay and Kirchartz, Thomas (2020). Analyzing Interface Recombination in Lead-Halide Perovskite Solar Cells with Organic and Inorganic Hole-Transport Layers. Adv. Mater. Interfaces, 7 (16). HOBOKEN: WILEY. ISSN 2196-7350

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Abstract

The interfaces between absorber and transport layers are shown to be critical for perovskite device performance. However, quantitative characterization of interface recombination has so far proven to be highly challenging in working perovskite solar cells. Here, methylammonium lead halide (CH3NH3PbI3) perovskite solar cells are studied based on a range of different hole-transport layers, namely, an inorganic hole-transport layer CuOx, an organic hole-transport layer poly(triarylamine) (PTAA), and a bilayer of CuOx/PTAA. The cells are completed by a [6,6]-phenyl-C-61-butyric acid methyl ester (PCBM)/bathocuproine/Ag electron contact. Energy levels are characterized using photoelectron spectroscopy and recombination dynamics by combining steady-state photoluminescence and transient photoluminescence with numerical simulations. While the PTAA-based devices hardly show any interface recombination losses and open-circuit voltages >1.2 V, substantial losses are observed for the samples with a direct CuOx/perovskite interface. These losses are assigned to a combination of energetic misalignment at the CuOx/perovskite interface coupled with increased interface recombination velocities at the perovskite/PCBM interface.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Haddad, JinaneUNSPECIFIEDorcid.org/0000-0003-3747-0412UNSPECIFIED
Krogmeier, BenediktUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Klingebiel, BenjaminUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Krueckemeier, LisaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Melhem, StephanieUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Liu, ZhifaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Huepkes, JuergenUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Mathur, SanjayUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Kirchartz, ThomasUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
URN: urn:nbn:de:hbz:38-328983
DOI: 10.1002/admi.202000366
Journal or Publication Title: Adv. Mater. Interfaces
Volume: 7
Number: 16
Date: 2020
Publisher: WILEY
Place of Publication: HOBOKEN
ISSN: 2196-7350
Language: English
Faculty: Faculty of Mathematics and Natural Sciences
Divisions: Faculty of Mathematics and Natural Sciences > Department of Chemistry > Institute of Inorganic Chemistry
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
RAY PHOTOELECTRON-SPECTROSCOPY; LIGHT-EMITTING-DIODES; OPEN-CIRCUIT VOLTAGES; OPTOELECTRONIC PROPERTIES; THIN-FILMS; LOW-COST; EFFICIENCY; OXIDE; PERFORMANCE; CU2OMultiple languages
Chemistry, Multidisciplinary; Materials Science, MultidisciplinaryMultiple languages
Refereed: Yes
URI: http://kups.ub.uni-koeln.de/id/eprint/32898

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