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A Novel Multi‐Functional Thiophene‐Based Organic Cation as Passivation, Crystalline Orientation, and Organic Spacer Agent for Low‐Dimensional 3D/1D Perovskite Solar Cells

Semerci, Ali ; Buyruk, Ali ; Emin, Saim ; Hooijer, Rik ; Kovacheva, Daniela ; Mayer, Peter ; Reus, Manuel A. ; Blätte, Dominic ; Günther, Marcella ; Hartmann, Nicolai F. ; Lotfi, Soroush ; Hofmann, Jan P. ; Müller‐Buschbaum, Peter ; Bein, Thomas ; Ameri, Tayebeh (2024)
A Novel Multi‐Functional Thiophene‐Based Organic Cation as Passivation, Crystalline Orientation, and Organic Spacer Agent for Low‐Dimensional 3D/1D Perovskite Solar Cells.
In: Advanced Optical Materials, 2023, 11 (16)
doi: 10.26083/tuprints-00024676
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Item Type: Article
Type of entry: Secondary publication
Title: A Novel Multi‐Functional Thiophene‐Based Organic Cation as Passivation, Crystalline Orientation, and Organic Spacer Agent for Low‐Dimensional 3D/1D Perovskite Solar Cells
Language: English
Date: 9 February 2024
Place of Publication: Darmstadt
Year of primary publication: 2023
Place of primary publication: Weinheim
Publisher: Wiley-VCH
Journal or Publication Title: Advanced Optical Materials
Volume of the journal: 11
Issue Number: 16
Collation: 13 Seiten
DOI: 10.26083/tuprints-00024676
Corresponding Links:
Origin: Secondary publication DeepGreen
Abstract:

Recently, the mixed‐dimensional (3D/2D or 3D/1D) perovskite solar cells using small organic spacers have attracted interest due to their outstanding long‐term stability. Here, a new type of thiophene‐based organic cation 2‐(thiophene‐2yl‐)pyridine‐1‐ium iodide (ThPyI), which is used to fabricate mixed‐dimensional 3D/1D perovskite solar cells, is presented. The ThPyI‐based 1D perovskitoid is applied as a passivator on top of a 3D methyl ammonium lead iodide (MAPI) to fabricate surface‐passivated 3D/1D perovskite films or added alone into the 3D perovskite precursor to generate bulk‐passivated 3D MAPI. The 1D perovskitoid acts as a passivating agent at the grain boundaries of surface‐passivated 3D/1D, which improves the power conversion efficiency (PCE) of the solar cells. Grazing incidence wide‐angle X‐ray scattering (GIWAXS) studies confirm that ThPyI triggers the preferential orientation of the bulk MAPI slabs, which is essential to enhance charge transport. Champion bulk‐passivated 3D and surface‐passivated 3D/1D devices yield 14.10% and 19.60% PCE, respectively. The bulk‐passivated 3D offers favorable stability, with 84% PCE retained after 2000 h without encapsulation. This study brings a new perspective to the design of organic spacers having a different binding motif and a passivation strategy to mitigate the impact of defects in hybrid 3D/1D perovskite solar cells.

Uncontrolled Keywords: 1D perovskite, 3D/1D perovskite, bulk‐passivated 3D perovskite, crystalline orientation promoter, passivation, solar cell
Identification Number: Artikel-ID: 2300267
Status: Publisher's Version
URN: urn:nbn:de:tuda-tuprints-246761
Classification DDC: 600 Technology, medicine, applied sciences > 660 Chemical engineering
Divisions: 11 Department of Materials and Earth Sciences > Material Science > Surface Science
Date Deposited: 09 Feb 2024 13:58
Last Modified: 09 Feb 2024 13:58
SWORD Depositor: Deep Green
URI: https://tuprints.ulb.tu-darmstadt.de/id/eprint/24676
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