Please use this identifier to cite or link to this item:
https://hdl.handle.net/20.500.14279/13648
Title: | Enhanced photovoltaic performance of perovskite solar cells by Co-doped spinel nickel cobaltite hole transporting layer |
Authors: | Ioakeimidis, Apostolos Papadas, Ioannis T. Tsikritzis, Dimitris Armatas, Gerasimos S. Kennou, Stella Choulis, Stelios A. |
Major Field of Science: | Engineering and Technology |
Field Category: | Materials Engineering |
Keywords: | Hole extractions;Hole transport layers;Photovoltaic performance;Solution combustion;Power conversion efficiencies |
Issue Date: | Feb-2019 |
Source: | APL Materials, 2019, vol. 7, no. 2 |
Volume: | 7 |
Issue: | 2 |
Journal: | APL Materials |
Abstract: | A solution combustion synthesized hole transport layer (HTL) of spinel nickel cobaltite (NiCo 2 O 4 ) incorporating 3% Cu-2% Li was fabricated using the doctor-blading technique for planar inverted perovskite solar cells (PVSCs). PVSCs incorporating 3% Cu-2% Li-doped NiCo 2 O 4 showed an increase in Jsc and Voc device performance parameters compared to unmodified NiCo 2 O 4 , leading to power conversion efficiency (PCE) of 16.5%. X-ray photoelectron spectroscopy measurements revealed the tendency of Cu cations to replace preferably the surface Ni atoms by changing the surface stoichiometry of NiCo 2 O 4 , inducing a cathodic polarization. Ultraviolet photoelectron spectroscopy measurements unveiled the increase in the ionization potential by 0.1 eV for a co-doped NiCo 2 O 4 film compared to unmodified NiCo 2 O 4 -based HTL. We attribute the enhanced PCE of the inverted PVSCs presented to the improved hole extraction properties of 3% Cu-2% Li NiCo 2 O 4 HTL. |
ISSN: | 2166532X |
DOI: | 10.1063/1.5079954 |
Rights: | © Author(s) |
Type: | Article |
Affiliation : | Cyprus University of Technology University of Crete University of Patras |
Publication Type: | Peer Reviewed |
Appears in Collections: | Άρθρα/Articles |
Files in This Item:
File | Description | Size | Format | |
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1.5079954.pdf | Fulltext | 1.78 MB | Adobe PDF | View/Open |
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