Issue 8, 2021

A novel multifunctional polymer ionic liquid as an additive in iodide electrolyte combined with silver mirror coating counter electrodes for quasi-solid-state dye-sensitized solar cells

Abstract

A novel multifunctional polymer ionic liquid poly(oxyethylene)-imide-2,2,6,6-tetramethyl-1-piperidinyloxy (POEI-TEMPO) was successfully prepared and used as an additive in iodide electrolyte in quasi-solid-state dye-sensitized solar cells (QSS-DSSCs). The POEI segment in the electrolyte has good mechanical strength; meanwhile, the TEMPO organic radical contains nitroxide as the redox couple (RN-O˙/RN[double bond, length as m-dash]O+) acting as a superior mediator in DSSCs. TEMPO has a number of favorable properties, such as fast and reversible redox kinetics, large apparent diffusion coefficient (Dapp), positive redox potential, and facile electron self-exchange reaction. As a result, DSSCs were composed of a POEI-TEMPO/iodide electrolyte and a Pt-coated FTO layer on glass as a normal counter electrode (PtCE), whereas the other side of the glass was coated with silver mirror coating (SMC) as the bifacial PtCE/SMC cell. DSSC exhibited a maximum photoelectric conversion efficiency (η) of 9.83%, open-circuit voltage (VOC) of 812.84 mV, and short-circuit current density (JSC) of 16.60 mA cm−2 under 1 sun (AM 1.5 G, 100 mW cm−2), whereas the value of η reached 25.99% under an indoor condition with 6000 lux (1.89 mW cm−2). Moreover, when POEI-TEMPO is used as an additive, the bifacial cell maintains its high performance with a reasonable long-term stability. The finding is expected to have a practical impact on harvesting the ambient light energy and extending the cell lifetime.

Graphical abstract: A novel multifunctional polymer ionic liquid as an additive in iodide electrolyte combined with silver mirror coating counter electrodes for quasi-solid-state dye-sensitized solar cells

Supplementary files

Article information

Article type
Paper
Submitted
06 Лис 2020
Accepted
07 Січ 2021
First published
08 Січ 2021

J. Mater. Chem. A, 2021,9, 4907-4921

A novel multifunctional polymer ionic liquid as an additive in iodide electrolyte combined with silver mirror coating counter electrodes for quasi-solid-state dye-sensitized solar cells

F. Lin, M. Sakthivel, M. Fan, J. Lin, R. Jeng and K. Ho, J. Mater. Chem. A, 2021, 9, 4907 DOI: 10.1039/D0TA10826J

To request permission to reproduce material from this article, please go to the Copyright Clearance Center request page.

If you are an author contributing to an RSC publication, you do not need to request permission provided correct acknowledgement is given.

If you are the author of this article, you do not need to request permission to reproduce figures and diagrams provided correct acknowledgement is given. If you want to reproduce the whole article in a third-party publication (excluding your thesis/dissertation for which permission is not required) please go to the Copyright Clearance Center request page.

Read more about how to correctly acknowledge RSC content.

Social activity

Spotlight

Advertisements