The effect of secondary dopants on screen-printed PEDOT:PSS counter-electrodes for dye-sensitized solar cells

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216224%3A14310%2F22%3A00125046" target="_blank" >RIV/00216224:14310/22:00125046 - isvavai.cz</a>

Výsledek na webu

<a href="https://onlinelibrary.wiley.com/doi/full/10.1002/app.51929" target="_blank" >https://onlinelibrary.wiley.com/doi/full/10.1002/app.51929</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1002/app.51929" target="_blank" >10.1002/app.51929</a>

Jazyk výsledku

angličtina

Název v původním jazyce

The effect of secondary dopants on screen-printed PEDOT:PSS counter-electrodes for dye-sensitized solar cells

Popis výsledku v původním jazyce

Dye-sensitized solar cells (DSSCs) gained great attention thanks to high conversion efficiency at ambient indoor light and the possibility of low-cost and eco-friendly fabrication by printing techniques (screen-printing) on different flexible or rigid substrates. These properties predetermine the use of DSSCs in current and future Internet of Things portable and wearable applications. However, one of the main problems of the standard DSSC structure lies in an expensive and unstable Pt counter-electrode (CE) in the liquid electrolyte. Printable conducting polymers, in particular doped poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) are the promising alternative. This work presents the preparation of the Pt-free counter-electrodes by screen-printing the water-based PEDOT:PSS inks and their optimization by adding secondary dopants, that is, ethylene glycol, polyethylene glycol, and dimethyl sulfoxide. Selected secondary dopants influenced the rheological and structural properties, conductivity, and electrochemical behavior of PEDOT:PSS inks and screen-printed PEDOT:PSS CE. The addition of dopants led to the decreased surface tension of PEDOT:PSS inks, with a subsequent positive effect on better wettability of FTO substrates. The lowest sheet resistance 138 Ω/sq, the highest conductivity 91 S/cm, best electrochemical activity towards triiodide reduction and the highest efficiency of DSSCs was evaluated for screen-printed PEDOT:PSS CEs doped with 6 wt% of ethylene glycol.

Název v anglickém jazyce

The effect of secondary dopants on screen-printed PEDOT:PSS counter-electrodes for dye-sensitized solar cells

Popis výsledku anglicky

Dye-sensitized solar cells (DSSCs) gained great attention thanks to high conversion efficiency at ambient indoor light and the possibility of low-cost and eco-friendly fabrication by printing techniques (screen-printing) on different flexible or rigid substrates. These properties predetermine the use of DSSCs in current and future Internet of Things portable and wearable applications. However, one of the main problems of the standard DSSC structure lies in an expensive and unstable Pt counter-electrode (CE) in the liquid electrolyte. Printable conducting polymers, in particular doped poly(3,4-ethylenedioxythiophene):poly(styrene sulfonate) (PEDOT:PSS) are the promising alternative. This work presents the preparation of the Pt-free counter-electrodes by screen-printing the water-based PEDOT:PSS inks and their optimization by adding secondary dopants, that is, ethylene glycol, polyethylene glycol, and dimethyl sulfoxide. Selected secondary dopants influenced the rheological and structural properties, conductivity, and electrochemical behavior of PEDOT:PSS inks and screen-printed PEDOT:PSS CE. The addition of dopants led to the decreased surface tension of PEDOT:PSS inks, with a subsequent positive effect on better wettability of FTO substrates. The lowest sheet resistance 138 Ω/sq, the highest conductivity 91 S/cm, best electrochemical activity towards triiodide reduction and the highest efficiency of DSSCs was evaluated for screen-printed PEDOT:PSS CEs doped with 6 wt% of ethylene glycol.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10404 - Polymer science

Projekt

<a href="/cs/project/LM2018097" target="_blank" >LM2018097: Centrum výzkumu a vývoje plazmatu a nanotechnologických povrchových úprav</a><br>

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)<br>I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2022

Kód důvěrnosti údajů

S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Název periodika

Journal of Applied Polymer Science

ISSN

0021-8995

e-ISSN

1097-4628

Svazek periodika

139

Číslo periodika v rámci svazku

15

Stát vydavatele periodika

US - Spojené státy americké

Počet stran výsledku

10

Strana od-do

1-10

Kód UT WoS článku

000718781600001

EID výsledku v databázi Scopus

2-s2.0-85119020898