Oxygen-dependent photophysics and photochemistry of prototypical compounds for organic photovoltaics: inhibiting degradation initiated by singlet oxygen at a molecular level

Publikation: Bidrag til tidsskriftTidsskriftartikelfagfællebedømt

Standard

Oxygen-dependent photophysics and photochemistry of prototypical compounds for organic photovoltaics : inhibiting degradation initiated by singlet oxygen at a molecular level. / Bregnhøj, Mikkel; Prete, Michela; Turkovic, Vida; Petersen, Anne Ugleholdt; Nielsen, Mogens Brøndsted; Madsen, Morten; Ogilby, Peter R.

I: Methods and Applications in Fluorescence, Bind 8, Nr. 1, 12.11.2019, s. 014001.

Publikation: Bidrag til tidsskriftTidsskriftartikelfagfællebedømt

Harvard

Bregnhøj, M, Prete, M, Turkovic, V, Petersen, AU, Nielsen, MB, Madsen, M & Ogilby, PR 2019, 'Oxygen-dependent photophysics and photochemistry of prototypical compounds for organic photovoltaics: inhibiting degradation initiated by singlet oxygen at a molecular level', Methods and Applications in Fluorescence, bind 8, nr. 1, s. 014001. https://doi.org/10.1088/2050-6120/ab4edc

APA

Bregnhøj, M., Prete, M., Turkovic, V., Petersen, A. U., Nielsen, M. B., Madsen, M., & Ogilby, P. R. (2019). Oxygen-dependent photophysics and photochemistry of prototypical compounds for organic photovoltaics: inhibiting degradation initiated by singlet oxygen at a molecular level. Methods and Applications in Fluorescence, 8(1), 014001. https://doi.org/10.1088/2050-6120/ab4edc

Vancouver

Bregnhøj M, Prete M, Turkovic V, Petersen AU, Nielsen MB, Madsen M o.a. Oxygen-dependent photophysics and photochemistry of prototypical compounds for organic photovoltaics: inhibiting degradation initiated by singlet oxygen at a molecular level. Methods and Applications in Fluorescence. 2019 nov. 12;8(1):014001. https://doi.org/10.1088/2050-6120/ab4edc

Author

Bregnhøj, Mikkel ; Prete, Michela ; Turkovic, Vida ; Petersen, Anne Ugleholdt ; Nielsen, Mogens Brøndsted ; Madsen, Morten ; Ogilby, Peter R. / Oxygen-dependent photophysics and photochemistry of prototypical compounds for organic photovoltaics : inhibiting degradation initiated by singlet oxygen at a molecular level. I: Methods and Applications in Fluorescence. 2019 ; Bind 8, Nr. 1. s. 014001.

Bibtex

@article{cbe9eedf32314d89aa4f41121a4b5b2e,
title = "Oxygen-dependent photophysics and photochemistry of prototypical compounds for organic photovoltaics: inhibiting degradation initiated by singlet oxygen at a molecular level",
abstract = "Photo-initiated, oxygen-mediated degradation of the molecules in the active layer of organic photovoltaic, OPV, devices currently limits advances in the development of solar cells. To address this problem systematically and at a molecular level, it is informative to quantify the kinetics of the pertinent processes, both in solution phase and in solid films. To this end, we examined the oxygen-dependent photophysics and photochemistry of selected functionalized fullerenes, thiophene derivatives, and a subphthalocyanine commonly used in OPV devices. We find that the photosensitized production of singlet molecular oxygen, O2(a1Δg), by these molecules is a key step in the degradation process. We demonstrate that the addition of either β-carotene or astaxanthin as antioxidants can inhibit degradation by a combination of three processes: (a) deactivation of O2(a1Δg) to the oxygen ground state, O2(X3Σg-), (b) quenching of the O2(a1Δg) precursor, and (c) sacrificial reactions of the carotenoid with free radicals formed in the photo-initiated reactions. For OPV systems in which reaction with O2(a1Δg) contributes to the degradation, the first two of these processes are desired and should have appreciable impact in prolonging the longevity of OPV devices because they do not result in a chemical change of the system.",
author = "Mikkel Bregnh{\o}j and Michela Prete and Vida Turkovic and Petersen, {Anne Ugleholdt} and Nielsen, {Mogens Br{\o}ndsted} and Morten Madsen and Ogilby, {Peter R}",
year = "2019",
month = nov,
day = "12",
doi = "10.1088/2050-6120/ab4edc",
language = "English",
volume = "8",
pages = "014001",
journal = "Methods and Applications in Fluorescence",
issn = "2050-6120",
publisher = "Institute of Physics Publishing Ltd",
number = "1",

}

RIS

TY - JOUR

T1 - Oxygen-dependent photophysics and photochemistry of prototypical compounds for organic photovoltaics

T2 - inhibiting degradation initiated by singlet oxygen at a molecular level

AU - Bregnhøj, Mikkel

AU - Prete, Michela

AU - Turkovic, Vida

AU - Petersen, Anne Ugleholdt

AU - Nielsen, Mogens Brøndsted

AU - Madsen, Morten

AU - Ogilby, Peter R

PY - 2019/11/12

Y1 - 2019/11/12

N2 - Photo-initiated, oxygen-mediated degradation of the molecules in the active layer of organic photovoltaic, OPV, devices currently limits advances in the development of solar cells. To address this problem systematically and at a molecular level, it is informative to quantify the kinetics of the pertinent processes, both in solution phase and in solid films. To this end, we examined the oxygen-dependent photophysics and photochemistry of selected functionalized fullerenes, thiophene derivatives, and a subphthalocyanine commonly used in OPV devices. We find that the photosensitized production of singlet molecular oxygen, O2(a1Δg), by these molecules is a key step in the degradation process. We demonstrate that the addition of either β-carotene or astaxanthin as antioxidants can inhibit degradation by a combination of three processes: (a) deactivation of O2(a1Δg) to the oxygen ground state, O2(X3Σg-), (b) quenching of the O2(a1Δg) precursor, and (c) sacrificial reactions of the carotenoid with free radicals formed in the photo-initiated reactions. For OPV systems in which reaction with O2(a1Δg) contributes to the degradation, the first two of these processes are desired and should have appreciable impact in prolonging the longevity of OPV devices because they do not result in a chemical change of the system.

AB - Photo-initiated, oxygen-mediated degradation of the molecules in the active layer of organic photovoltaic, OPV, devices currently limits advances in the development of solar cells. To address this problem systematically and at a molecular level, it is informative to quantify the kinetics of the pertinent processes, both in solution phase and in solid films. To this end, we examined the oxygen-dependent photophysics and photochemistry of selected functionalized fullerenes, thiophene derivatives, and a subphthalocyanine commonly used in OPV devices. We find that the photosensitized production of singlet molecular oxygen, O2(a1Δg), by these molecules is a key step in the degradation process. We demonstrate that the addition of either β-carotene or astaxanthin as antioxidants can inhibit degradation by a combination of three processes: (a) deactivation of O2(a1Δg) to the oxygen ground state, O2(X3Σg-), (b) quenching of the O2(a1Δg) precursor, and (c) sacrificial reactions of the carotenoid with free radicals formed in the photo-initiated reactions. For OPV systems in which reaction with O2(a1Δg) contributes to the degradation, the first two of these processes are desired and should have appreciable impact in prolonging the longevity of OPV devices because they do not result in a chemical change of the system.

U2 - 10.1088/2050-6120/ab4edc

DO - 10.1088/2050-6120/ab4edc

M3 - Journal article

C2 - 31622967

VL - 8

SP - 014001

JO - Methods and Applications in Fluorescence

JF - Methods and Applications in Fluorescence

SN - 2050-6120

IS - 1

ER -

ID: 243151835