Inverted organic photovoltaics with a solution-processed Mg-doped ZnO electron transport layer annealed at 150 degrees C
File(s)
Published version
Author(s)
Type
Journal Article
Abstract
The use of dopants is an effective strategy to improve ZnO electron transport layers (ETLs) for application in solution-processed opto-electronic devices. Mg, in particular, has shown significant promise as a dopant and Mg-doped ZnO ETLs have been used to enhance the performance of a number of solution-processed light-emitting diodes and photovoltaics. However, such a use of Mg to dope ZnO ETLs for organic photovoltaics (OPVs) has remained limited, and only investigated in connection with annealing temperatures of 300 °C or so. In this work, with a view to increase sustainability and compatibility with soft and flexible or foldable substrates, we present OPVs incorporating Mg-doped ZnO ETLs fabricated with annealing temperatures of 150 °C. We demonstrate that Mg doping (≈1% at%) in the ZnO ETL reduces leakage currents and recombination losses in our devices, whilst leaving the morphology of the active layer and the work function of the ETL unaffected. A concomitant increase of the short circuit current density, open circuit voltage and fill factor is also observed, thereby leading to a relative enhancement of the power conversion efficiency by ≈18% compared to devices prepared using undoped ZnO.
Date Issued
2022-05-06
Date Acceptance
2022-04-10
Citation
Sustainable Energy & Fuels, 2022, 6 (11), pp.2835-2845
ISSN
2398-4902
Publisher
Royal Society of Chemistry
Start Page
2835
End Page
2845
Journal / Book Title
Sustainable Energy & Fuels
Volume
6
Issue
11
Copyright Statement
Open Access Article. Published on 06 May 2022. This article is licensed under a Creative Commons Attribution 3.0 Unported Licence
License URL
Identifier
http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000797046900001&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=1ba7043ffcc86c417c072aa74d649202
Subjects
Science & Technology
Physical Sciences
Technology
Chemistry, Physical
Energy & Fuels
Materials Science, Multidisciplinary
Chemistry
Materials Science
PEROVSKITE SOLAR-CELLS
LIGHT-EMITTING-DIODES
CHARGE-TRANSPORT
ZINC-OXIDE
EFFICIENT
TEMPERATURE
NANOPARTICLES
PERFORMANCE
FILM
Publication Status
Published