Exciton diffusion length in titanyl phthalocyanine thin films as determined by the surface photovoltage method

Kód výsledku v IS VaVaI

<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11320%2F11%3A10104522" target="_blank" >RIV/00216208:11320/11:10104522 - isvavai.cz</a>

Nalezeny alternativní kódy

RIV/68378271:_____/11:00374977 RIV/61389013:_____/11:00374977

Výsledek na webu

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DOI - Digital Object Identifier

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Jazyk výsledku

angličtina

Název v původním jazyce

Exciton diffusion length in titanyl phthalocyanine thin films as determined by the surface photovoltage method

Popis výsledku v původním jazyce

Exciton diffusion length was measured by the generalized surface photovoltage (SPV) method. Theoretical calculations of the photocurrents from the SCR and from the bulk of the layers were carried out and illustrated to show how the different parameters influence the form and relative size of the photogenerated signal. We studied titanyl phthalocyanine (TiOPc) thin films prepared using evaporation and surface polymerization by ion-assisted deposition (SPIAD). Bilayer (TiO2/TiOPc) thin films were also prepared, where the TiO2 layer was sputtered from TiO2 target. All films were characterized by the surface photovoltage method using absorption coefficients evaluated from measurement of the optical transmission and reflection. We found that the drift lengths of the charge carriers were shorter than the SCR thickness, which means recombination in this depletion region. Typically, the thickness of the SCR was higher than that of the bulk and the diffusion length of excitons was ~15 nm.

Název v anglickém jazyce

Exciton diffusion length in titanyl phthalocyanine thin films as determined by the surface photovoltage method

Popis výsledku anglicky

Exciton diffusion length was measured by the generalized surface photovoltage (SPV) method. Theoretical calculations of the photocurrents from the SCR and from the bulk of the layers were carried out and illustrated to show how the different parameters influence the form and relative size of the photogenerated signal. We studied titanyl phthalocyanine (TiOPc) thin films prepared using evaporation and surface polymerization by ion-assisted deposition (SPIAD). Bilayer (TiO2/TiOPc) thin films were also prepared, where the TiO2 layer was sputtered from TiO2 target. All films were characterized by the surface photovoltage method using absorption coefficients evaluated from measurement of the optical transmission and reflection. We found that the drift lengths of the charge carriers were shorter than the SCR thickness, which means recombination in this depletion region. Typically, the thickness of the SCR was higher than that of the bulk and the diffusion length of excitons was ~15 nm.

Druh

C - Kapitola v odborné knize

CEP obor

BM - Fyzika pevných látek a magnetismus

OECD FORD obor

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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)<br>Z - Vyzkumny zamer (s odkazem do CEZ)

Rok uplatnění

2011

Kód důvěrnosti údajů

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

Název knihy nebo sborníku

Exciton Quasiparticles: Theory, Dynamics and Applications

ISBN

978-1-61122-318-7

Počet stran výsledku

16

Strana od-do

275-290

Počet stran knihy

411

Název nakladatele

Nova Science Publishers, Inc.

Místo vydání

New York

Kód UT WoS kapitoly

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