Organic solar cells with sensitized phosphorescent absorbing layers

Barry P. Rand; Sarah Schols; David Cheyns; Hans Gommans; Claudio Girotto; Jan Genoe; Paul Heremans; Jef Poortmans

doi:10.1016/j.orgel.2009.04.011

Organic solar cells with sensitized phosphorescent absorbing layers

Barry P. Rand, Sarah Schols, David Cheyns, Hans Gommans, Claudio Girotto, Jan Genoe, Paul Heremans, Jef Poortmans

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60 Scopus citations

Abstract

We demonstrate an increase of the exciton diffusion length (L_D) of a fluorescent donor layer via the process of sensitized phosphorescence, whereby initially generated singlet excitons are transferred to triplet excitons via a properly chosen dopant molecule. Using a poly(p-phenylene vinylene) host doped with the phosphorescent molecule platinum octaethylporphyrin, L_D increases from 4 ± 1 to 9 ± 1 nm for an optimal doping of 5 wt%. As a result of the increased L_D, the photocurrent from the doped layer increases by 40%. By doping with the fluorescent, non-metalated analogue octaethylporphyrin, a reduction in photocurrent is shown, providing further evidence of the sensitized phosphorescence mechanism.

Original language	English (US)
Pages (from-to)	1015-1019
Number of pages	5
Journal	Organic Electronics
Volume	10
Issue number	5
DOIs	https://doi.org/10.1016/j.orgel.2009.04.011
State	Published - Aug 2009

All Science Journal Classification (ASJC) codes

Electronic, Optical and Magnetic Materials
Biomaterials
General Chemistry
Condensed Matter Physics
Materials Chemistry
Electrical and Electronic Engineering

Keywords

31.50.Df
72.80.Le
84.60.Jt
Excition diffusion length
Organic photovoltaic cells
Sensitized phosphorescence

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10.1016/j.orgel.2009.04.011

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@article{39a33e0196cf4948adef55cd1af75061,

title = "Organic solar cells with sensitized phosphorescent absorbing layers",

abstract = "We demonstrate an increase of the exciton diffusion length (LD) of a fluorescent donor layer via the process of sensitized phosphorescence, whereby initially generated singlet excitons are transferred to triplet excitons via a properly chosen dopant molecule. Using a poly(p-phenylene vinylene) host doped with the phosphorescent molecule platinum octaethylporphyrin, LD increases from 4 ± 1 to 9 ± 1 nm for an optimal doping of 5 wt%. As a result of the increased LD, the photocurrent from the doped layer increases by 40%. By doping with the fluorescent, non-metalated analogue octaethylporphyrin, a reduction in photocurrent is shown, providing further evidence of the sensitized phosphorescence mechanism.",

keywords = "31.50.Df, 72.80.Le, 84.60.Jt, Excition diffusion length, Organic photovoltaic cells, Sensitized phosphorescence",

author = "Rand, {Barry P.} and Sarah Schols and David Cheyns and Hans Gommans and Claudio Girotto and Jan Genoe and Paul Heremans and Jef Poortmans",

note = "Funding Information: The authors would like to thank A. Hadipour and A. Kadashchuk for helpful discussions. One of the authors (S.S.) would like to acknowledge the FWO-Vlaanderen for financial support. Copyright: Copyright 2019 Elsevier B.V., All rights reserved.",

year = "2009",

month = aug,

doi = "10.1016/j.orgel.2009.04.011",

language = "English (US)",

volume = "10",

pages = "1015--1019",

journal = "Organic Electronics",

issn = "1566-1199",

publisher = "Elsevier B.V.",

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TY - JOUR

T1 - Organic solar cells with sensitized phosphorescent absorbing layers

AU - Rand, Barry P.

AU - Schols, Sarah

AU - Cheyns, David

AU - Gommans, Hans

AU - Girotto, Claudio

AU - Genoe, Jan

AU - Heremans, Paul

AU - Poortmans, Jef

N1 - Funding Information: The authors would like to thank A. Hadipour and A. Kadashchuk for helpful discussions. One of the authors (S.S.) would like to acknowledge the FWO-Vlaanderen for financial support. Copyright: Copyright 2019 Elsevier B.V., All rights reserved.

PY - 2009/8

Y1 - 2009/8

N2 - We demonstrate an increase of the exciton diffusion length (LD) of a fluorescent donor layer via the process of sensitized phosphorescence, whereby initially generated singlet excitons are transferred to triplet excitons via a properly chosen dopant molecule. Using a poly(p-phenylene vinylene) host doped with the phosphorescent molecule platinum octaethylporphyrin, LD increases from 4 ± 1 to 9 ± 1 nm for an optimal doping of 5 wt%. As a result of the increased LD, the photocurrent from the doped layer increases by 40%. By doping with the fluorescent, non-metalated analogue octaethylporphyrin, a reduction in photocurrent is shown, providing further evidence of the sensitized phosphorescence mechanism.

AB - We demonstrate an increase of the exciton diffusion length (LD) of a fluorescent donor layer via the process of sensitized phosphorescence, whereby initially generated singlet excitons are transferred to triplet excitons via a properly chosen dopant molecule. Using a poly(p-phenylene vinylene) host doped with the phosphorescent molecule platinum octaethylporphyrin, LD increases from 4 ± 1 to 9 ± 1 nm for an optimal doping of 5 wt%. As a result of the increased LD, the photocurrent from the doped layer increases by 40%. By doping with the fluorescent, non-metalated analogue octaethylporphyrin, a reduction in photocurrent is shown, providing further evidence of the sensitized phosphorescence mechanism.

KW - 31.50.Df

KW - 72.80.Le

KW - 84.60.Jt

KW - Excition diffusion length

KW - Organic photovoltaic cells

KW - Sensitized phosphorescence

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U2 - 10.1016/j.orgel.2009.04.011

DO - 10.1016/j.orgel.2009.04.011

M3 - Article

AN - SCOPUS:67649233071

SN - 1566-1199

VL - 10

SP - 1015

EP - 1019

JO - Organic Electronics

JF - Organic Electronics

IS - 5

ER -

Organic solar cells with sensitized phosphorescent absorbing layers

Abstract

All Science Journal Classification (ASJC) codes

Keywords

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