On the nature of plasmon-induced photocurrent enhancement in Bacteriochlorophyll c sensitized solar cells: Towards red light harvesting
Identifikátory výsledku
Kód výsledku v IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F21%3A10421444" target="_blank" >RIV/00216208:11320/21:10421444 - isvavai.cz</a>
Výsledek na webu
<a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=3FbUM1w8qa" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=3FbUM1w8qa</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.1016/j.matchemphys.2020.123932" target="_blank" >10.1016/j.matchemphys.2020.123932</a>
Alternativní jazyky
Jazyk výsledku
angličtina
Název v původním jazyce
On the nature of plasmon-induced photocurrent enhancement in Bacteriochlorophyll c sensitized solar cells: Towards red light harvesting
Popis výsledku v původním jazyce
Bacteriochlorophyll c (BChl c) is a naturally occurring pigment which, as a monomer, exhibits strong absorption in the red region (600-700 nm), where the dyes used in the most efficient solar cells absorb only weakly. Herein, we investigate the plasmonic enhancement of photoconversion efficiencies in BChl c sensitized solar cells using gold nanoparticles of different morphologies. Using cyclic voltammetry, a favourable band offset (similar to 0.72 eV) between the lowest unoccupied molecular orbital of BChl c and the conduction band edge of titania photoanode was established. Further, gold nanorods with a localized surface plasmon resonance (SPR) frequency overlapping the absorption maxima of BChl c at similar to 670 nm were used, and compared with gold nanospheres with a SPR maximum in a region (similar to 525 nm) where BChl c has no absorption. Gold nanorod incorporated solar cells displayed the highest photoconversion efficiency with more than 30% increase in photocurrent, compared to devices containing nanospheres and only BChl c. The results are explained using boundary element method simulations, which show a significantly enhanced scattering cross-section and local electric field in the vicinity of gold nanorods compared to the nanospheres. Electrochemical impedance spectroscopy studies indicate reduced charge transport resistance in both gold nanorod and nanosphere incorporated devices.
Název v anglickém jazyce
On the nature of plasmon-induced photocurrent enhancement in Bacteriochlorophyll c sensitized solar cells: Towards red light harvesting
Popis výsledku anglicky
Bacteriochlorophyll c (BChl c) is a naturally occurring pigment which, as a monomer, exhibits strong absorption in the red region (600-700 nm), where the dyes used in the most efficient solar cells absorb only weakly. Herein, we investigate the plasmonic enhancement of photoconversion efficiencies in BChl c sensitized solar cells using gold nanoparticles of different morphologies. Using cyclic voltammetry, a favourable band offset (similar to 0.72 eV) between the lowest unoccupied molecular orbital of BChl c and the conduction band edge of titania photoanode was established. Further, gold nanorods with a localized surface plasmon resonance (SPR) frequency overlapping the absorption maxima of BChl c at similar to 670 nm were used, and compared with gold nanospheres with a SPR maximum in a region (similar to 525 nm) where BChl c has no absorption. Gold nanorod incorporated solar cells displayed the highest photoconversion efficiency with more than 30% increase in photocurrent, compared to devices containing nanospheres and only BChl c. The results are explained using boundary element method simulations, which show a significantly enhanced scattering cross-section and local electric field in the vicinity of gold nanorods compared to the nanospheres. Electrochemical impedance spectroscopy studies indicate reduced charge transport resistance in both gold nanorod and nanosphere incorporated devices.
Klasifikace
Druh
J<sub>imp</sub> - Článek v periodiku v databázi Web of Science
CEP obor
—
OECD FORD obor
10302 - Condensed matter physics (including formerly solid state physics, supercond.)
Návaznosti výsledku
Projekt
<a href="/cs/project/GJ18-07977Y" target="_blank" >GJ18-07977Y: Výzkum vlastností jednotlivých nanočástic pomocí mikro-spektroskopie kombinované s mikroskopií atomárních sil.</a><br>
Návaznosti
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Ostatní
Rok uplatnění
2021
Kód důvěrnosti údajů
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Údaje specifické pro druh výsledku
Název periodika
Materials Chemistry and Physics
ISSN
0254-0584
e-ISSN
—
Svazek periodika
258
Číslo periodika v rámci svazku
Neuveden
Stát vydavatele periodika
CH - Švýcarská konfederace
Počet stran výsledku
10
Strana od-do
123932
Kód UT WoS článku
000595152900005
EID výsledku v databázi Scopus
2-s2.0-85093649285