Universität zu Köln

Irfan, Muhammad, Uenlue, Feray, Le, Khan ORCID: 0000-0001-7945-0319, Fischer, Thomas, Ullah, Hameed ORCID: 0000-0001-6669-6619 and Mathur, Sanjay (2022). Electrospun Networks of ZnO-SnO2 Composite Nanowires as Electron Transport Materials for Perovskite Solar Cells. J. Nanomater., 2022. LONDON: HINDAWI LTD. ISSN 1687-4129

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Abstract

Here, we report on the fabrication of one-dimensional (1D) zinc oxide-tin oxide (ZnO-SnO2, ZTO) hollow nanostructures by coaxial electrospinning followed by investigations of their electron transport properties in regular perovskite solar cells (PSCs). The as-electrospun nanowires (NWs) were obtained as core-shell nanostructures comprised of polymeric core and metal oxide precursors-polymer shell. Thermal analysis studies of the as-electrospun NWs revealed the optimum calcination temperature for complete removal of the polymer and formation of phase pure ZTO. The obtained nanostructured ZTO materials revealed a porous morphology with tubular nanostructures, i.e., NTs. The porous structure of nanoparticles, i.e., NTs in this case, is of particular interest due to the following reasons: (a) structure, particularly 1D, has a profound influence on the electron transport properties, and (b) suitable porosity helps in effective infiltration of perovskite material and hence supports better charge transport at the ZTO-perovskite interface. The nanomaterials were characterized by Fourier transform infrared (FTIR), diffuse reflectance spectroscopy (DRS), and energy dispersive X-ray spectroscopy (EDX) to confirm the presence/absence of functional groups, establish band gap energies (E-g), and determine the elemental compositions, respectively. The ZTO NTs were used as electron transport media in the fabrication of perovskite solar cells (PSCs) and established the structure-property (electron transport) relationships. The highest solar to power conversion efficiency (PCE) of 13.0% (average: 11.90%) was measured for the PSCs based on ZTO NTs obtained by calcination of as-electrospun NWs at 800 degrees C. It indicates the fact that the calcination temperature influenced the structure which as a result influenced the electron transport property of the material used as ETL in PSCs.

Item Type:	Journal Article
Creators:	Creators Email ORCID ORCID Put Code Irfan, Muhammad UNSPECIFIED UNSPECIFIED UNSPECIFIED Uenlue, Feray UNSPECIFIED UNSPECIFIED UNSPECIFIED Le, Khan UNSPECIFIED orcid.org/0000-0001-7945-0319 UNSPECIFIED Fischer, Thomas UNSPECIFIED UNSPECIFIED UNSPECIFIED Ullah, Hameed UNSPECIFIED orcid.org/0000-0001-6669-6619 UNSPECIFIED Mathur, Sanjay UNSPECIFIED UNSPECIFIED UNSPECIFIED
URN:	urn:nbn:de:hbz:38-671250
DOI:	10.1155/2022/6043406
Journal or Publication Title:	J. Nanomater.
Volume:	2022
Date:	2022
Publisher:	HINDAWI LTD
Place of Publication:	LONDON
ISSN:	1687-4129
Language:	English
Faculty:	Unspecified
Divisions:	Unspecified
Subjects:	no entry
Uncontrolled Keywords:	Keywords Language ENHANCED CHARGE-COLLECTION; THIN-FILMS; THERMAL-STABILITY; EFFICIENT; TIO2; PERFORMANCE; PHOTOANODE; LAYERS; SNO2; ZNO Multiple languages Nanoscience & Nanotechnology; Materials Science, Multidisciplinary Multiple languages
URI:	http://kups.ub.uni-koeln.de/id/eprint/67125