Efficiency and stability of spectral sensitization of boron-doped-diamond electrodes through covalent anchoring of a donor-acceptor organic chromophore (P1)

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F60461373%3A22330%2F16%3A43901704" target="_blank" >RIV/60461373:22330/16:43901704 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/16:00460165 RIV/61388955:_____/16:00460165 RIV/61388963:_____/16:00460165 RIV/68407700:21460/16:00304393 a 2 dalších

Výsledek na webu

<a href="http://dx.doi.org/10.1039/c6cp02209j" target="_blank" >http://dx.doi.org/10.1039/c6cp02209j</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1039/c6cp02209j" target="_blank" >10.1039/c6cp02209j</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Efficiency and stability of spectral sensitization of boron-doped-diamond electrodes through covalent anchoring of a donor-acceptor organic chromophore (P1)

Popis výsledku v původním jazyce

A novel procedure is developed for chemical modification of H-terminated B-doped diamond surfaces with a donor-pi-bridge-acceptor molecule (P1). A cathodic photocurrent near 1 mu A cm(-2) flows under 1 Sun (AM 1.5) illumination at the interface between the diamond electrode and aqueous electrolyte solution containing dimethylviologen (electron mediator). The efficiency of this new electrode outperforms that of the non-covalently modified diamond with the same dye. The found external quantum efficiency of the P1-sensitized diamond is not far from that of the flat titania electrode sensitized by a standard organometallic dye used in solar cells. However, the P1 dye, both pure and diamond-anchored, shows significant instability during illumination by solar light. The degradation is a two-stage process in which the initially photo-generated products further decompose in complicated dark reactions. These findings need to be taken into account for optimization of organic chromophores for solar cells in general.

Název v anglickém jazyce

Efficiency and stability of spectral sensitization of boron-doped-diamond electrodes through covalent anchoring of a donor-acceptor organic chromophore (P1)

Popis výsledku anglicky

A novel procedure is developed for chemical modification of H-terminated B-doped diamond surfaces with a donor-pi-bridge-acceptor molecule (P1). A cathodic photocurrent near 1 mu A cm(-2) flows under 1 Sun (AM 1.5) illumination at the interface between the diamond electrode and aqueous electrolyte solution containing dimethylviologen (electron mediator). The efficiency of this new electrode outperforms that of the non-covalently modified diamond with the same dye. The found external quantum efficiency of the P1-sensitized diamond is not far from that of the flat titania electrode sensitized by a standard organometallic dye used in solar cells. However, the P1 dye, both pure and diamond-anchored, shows significant instability during illumination by solar light. The degradation is a two-stage process in which the initially photo-generated products further decompose in complicated dark reactions. These findings need to be taken into account for optimization of organic chromophores for solar cells in general.

Druh

J_x - Nezařazeno - Článek v odborném periodiku (Jimp, Jsc a Jost)

CEP obor

CF - Fyzikální chemie a teoretická chemie

OECD FORD obor

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Projekt

Výsledek vznikl pri realizaci vícero projektů. Více informací v záložce Projekty.

Návaznosti

I - Institucionalni podpora na dlouhodoby koncepcni rozvoj vyzkumne organizace

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

Physical Chemistry Chemical Physics

ISSN

1463-9076

e-ISSN

—

Svazek periodika

18

Číslo periodika v rámci svazku

24

Stát vydavatele periodika

GB - Spojené království Velké Británie a Severního Irska

Počet stran výsledku

7

Strana od-do

16444-16450

Kód UT WoS článku

000381056500045

EID výsledku v databázi Scopus

2-s2.0-84975298286