Towards improved efficiency of bulk-heterojunction solar cells using various spinel ferrite magnetic nanoparticles

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216305%3A26310%2F16%3APU120638" target="_blank" >RIV/00216305:26310/16:PU120638 - isvavai.cz</a>

Výsledek na webu

<a href="http://www.sciencedirect.com/science/article/pii/S1566119916304256" target="_blank" >http://www.sciencedirect.com/science/article/pii/S1566119916304256</a>

DOI - Digital Object Identifier

<a href="http://dx.doi.org/10.1016/j.orgel.2016.09.033" target="_blank" >10.1016/j.orgel.2016.09.033</a>

Jazyk výsledku

angličtina

Název v původním jazyce

Towards improved efficiency of bulk-heterojunction solar cells using various spinel ferrite magnetic nanoparticles

Popis výsledku v původním jazyce

A detailed study of organic solar cells (OSC) doped with various ferromagnetic and superparamagnetic (Fe3O4, ZnFe2O4 NiFe2O4) nanoparticles (MNPs) is presented. Additionally to previously used magnetite nanoparticles, various magnetic moment spinel ferrites were applied. By impedance spectroscopy (IS) analysis it is shown how the doping with various MNPs influences solar cells' performance by the charge carrier effective lifetime extension. In this regard, we introduced a convenient illustrative method to define time constants from the impedance measurements. It is also shown that, photovoltaic performance of the solar cells directly depends on the magnetic moment and alignment of the. super paramagnetic single-domain MNPs. Alignment of the MNPs within the OSCs' active layer results in MNPs dipole-dipole interaction, thus further-improves photovoltaic performance due to efficient charge collection at the short-circuit condition. OSC doping with ferromagnetic MNPs showed negative influence on the device petformance, however in dark conditions, devices doped with CoFe2O4 showed higher forward current presumably due to leakage current through the large MNP aggregation or electron-polaron hopping. (C) 2016 Elsevier B.V. All rights reserved.

Název v anglickém jazyce

Towards improved efficiency of bulk-heterojunction solar cells using various spinel ferrite magnetic nanoparticles

Popis výsledku anglicky

A detailed study of organic solar cells (OSC) doped with various ferromagnetic and superparamagnetic (Fe3O4, ZnFe2O4 NiFe2O4) nanoparticles (MNPs) is presented. Additionally to previously used magnetite nanoparticles, various magnetic moment spinel ferrites were applied. By impedance spectroscopy (IS) analysis it is shown how the doping with various MNPs influences solar cells' performance by the charge carrier effective lifetime extension. In this regard, we introduced a convenient illustrative method to define time constants from the impedance measurements. It is also shown that, photovoltaic performance of the solar cells directly depends on the magnetic moment and alignment of the. super paramagnetic single-domain MNPs. Alignment of the MNPs within the OSCs' active layer results in MNPs dipole-dipole interaction, thus further-improves photovoltaic performance due to efficient charge collection at the short-circuit condition. OSC doping with ferromagnetic MNPs showed negative influence on the device petformance, however in dark conditions, devices doped with CoFe2O4 showed higher forward current presumably due to leakage current through the large MNP aggregation or electron-polaron hopping. (C) 2016 Elsevier B.V. All rights reserved.

Druh

J_imp - Článek v periodiku v databázi Web of Science

CEP obor

—

OECD FORD obor

10302 - Condensed matter physics (including formerly solid state physics, supercond.)

Projekt

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

Návaznosti

P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Rok uplatnění

2016

Kód důvěrnosti údajů

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

Název periodika

ORGANIC ELECTRONICS

ISSN

1566-1199

e-ISSN

1878-5530

Svazek periodika

39

Číslo periodika v rámci svazku

1

Stát vydavatele periodika

NL - Nizozemsko

Počet stran výsledku

9

Strana od-do

118-126

Kód UT WoS článku

000389087400017

EID výsledku v databázi Scopus

2-s2.0-84989316784