Influence of the relative molecular orientation on interfacial charge-transfer Excitons at donor/acceptor Nanoscale heterojunctions

Mahdieh Aghamohammadi; Anton Fernández; Malte Schmidt; Ana Pérez-Rodríguez; Alejandro Goñi; Jordi Fraxedas; Guillaume Sauthier; Marcos Paradinas Aranjuelo; Carmen Ocal García; Esther Barrena

doi:10.1021/jp5041579

Influence of the relative molecular orientation on interfacial charge-transfer Excitons at donor/acceptor Nanoscale heterojunctions

Mahdieh Aghamohammadi, Anton Fernández, Malte Schmidt, Ana Pérez-Rodríguez, Alejandro Goñi, Jordi Fraxedas, Guillaume Sauthier, Marcos Paradinas Aranjuelo, Carmen Ocal García, Esther Barrena

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We address the impact of the relative orientation between donor (D) and acceptor (A) molecules at the D/A heterojunction on the exciton dissociation. For this purpose, two-dimensional heterojunctions of diindenoperylene (DIP) and N,N'-dioctyl-3,4,9,10-perylene tetracarboxylicdiimide (PTCDI-C) deposited onto SiO/Si are grown, which exemplify two model interfaces with the π-staking direction either perpendicular or parallel to the interface. Aspects related to the morphology of the heterojunctions and charge photogeneration are studied by scanning probe force methods and photoluminescence (PL) spectroscopy. Results from PL spectroscopy indicate that the exciton dissociation is influenced by the different relative molecular orientations of A and D. For the configuration with stronger orbital overlap between A and D at the interface, the exciton dissociation is dominated by recombination from an interfacial charge-transfer state. © 2014 American Chemical Society.

Idioma original	Anglès
Pàgines (de-a)	14833-14839
Nombre de pàgines	7
Revista	Journal of Physical Chemistry C
Volum	118
Número	27
DOIs	https://doi.org/10.1021/jp5041579
Estat de la publicació	En premsa - 2014

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10.1021/jp5041579

https://ddd.uab.cat/record/275376

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Aghamohammadi, M., Fernández, A., Schmidt, M., Pérez-Rodríguez, A., Goñi, A., Fraxedas, J., Sauthier, G., Paradinas Aranjuelo, M., Ocal García, C., & Barrena, E. (Acceptat/En premsa). Influence of the relative molecular orientation on interfacial charge-transfer Excitons at donor/acceptor Nanoscale heterojunctions. Journal of Physical Chemistry C, 118(27), 14833-14839. https://doi.org/10.1021/jp5041579

@article{18af066ba3e14731be559f42f993bcd0,

title = "Influence of the relative molecular orientation on interfacial charge-transfer Excitons at donor/acceptor Nanoscale heterojunctions",

abstract = "We address the impact of the relative orientation between donor (D) and acceptor (A) molecules at the D/A heterojunction on the exciton dissociation. For this purpose, two-dimensional heterojunctions of diindenoperylene (DIP) and N,N'-dioctyl-3,4,9,10-perylene tetracarboxylicdiimide (PTCDI-C) deposited onto SiO/Si are grown, which exemplify two model interfaces with the π-staking direction either perpendicular or parallel to the interface. Aspects related to the morphology of the heterojunctions and charge photogeneration are studied by scanning probe force methods and photoluminescence (PL) spectroscopy. Results from PL spectroscopy indicate that the exciton dissociation is influenced by the different relative molecular orientations of A and D. For the configuration with stronger orbital overlap between A and D at the interface, the exciton dissociation is dominated by recombination from an interfacial charge-transfer state. {\textcopyright} 2014 American Chemical Society.",

keywords = "Charge photogeneration, Charge transfer state, Exciton dissociation, Model interface, Orbital overlap, PL spectroscopy, Relative orientation, Scanning probes",

author = "Mahdieh Aghamohammadi and Anton Fern{\'a}ndez and Malte Schmidt and Ana P{\'e}rez-Rodr{\'i}guez and Alejandro Go{\~n}i and Jordi Fraxedas and Guillaume Sauthier and {Paradinas Aranjuelo}, Marcos and {Ocal Garc{\'i}a}, Carmen and Esther Barrena",

year = "2014",

doi = "10.1021/jp5041579",

language = "English",

volume = "118",

pages = "14833--14839",

journal = "Journal of Physical Chemistry C",

issn = "1932-7447",

publisher = "American Chemical Society",

number = "27",

}

Aghamohammadi, M, Fernández, A, Schmidt, M, Pérez-Rodríguez, A, Goñi, A, Fraxedas, J, Sauthier, G, Paradinas Aranjuelo, M, Ocal García, C & Barrena, E 2014, 'Influence of the relative molecular orientation on interfacial charge-transfer Excitons at donor/acceptor Nanoscale heterojunctions', Journal of Physical Chemistry C, vol. 118, núm. 27, pàg. 14833-14839. https://doi.org/10.1021/jp5041579

Influence of the relative molecular orientation on interfacial charge-transfer Excitons at donor/acceptor Nanoscale heterojunctions. / Aghamohammadi, Mahdieh; Fernández, Anton; Schmidt, Malte et al.
In: Journal of Physical Chemistry C, Vol. 118, Núm. 27, 2014, pàg. 14833-14839.

Producció científica: Contribució a revista › Article › Recerca › Avaluat per experts

TY - JOUR

T1 - Influence of the relative molecular orientation on interfacial charge-transfer Excitons at donor/acceptor Nanoscale heterojunctions

AU - Aghamohammadi, Mahdieh

AU - Fernández, Anton

AU - Schmidt, Malte

AU - Pérez-Rodríguez, Ana

AU - Goñi, Alejandro

AU - Fraxedas, Jordi

AU - Sauthier, Guillaume

AU - Paradinas Aranjuelo, Marcos

AU - Ocal García, Carmen

AU - Barrena, Esther

PY - 2014

Y1 - 2014

N2 - We address the impact of the relative orientation between donor (D) and acceptor (A) molecules at the D/A heterojunction on the exciton dissociation. For this purpose, two-dimensional heterojunctions of diindenoperylene (DIP) and N,N'-dioctyl-3,4,9,10-perylene tetracarboxylicdiimide (PTCDI-C) deposited onto SiO/Si are grown, which exemplify two model interfaces with the π-staking direction either perpendicular or parallel to the interface. Aspects related to the morphology of the heterojunctions and charge photogeneration are studied by scanning probe force methods and photoluminescence (PL) spectroscopy. Results from PL spectroscopy indicate that the exciton dissociation is influenced by the different relative molecular orientations of A and D. For the configuration with stronger orbital overlap between A and D at the interface, the exciton dissociation is dominated by recombination from an interfacial charge-transfer state. © 2014 American Chemical Society.

AB - We address the impact of the relative orientation between donor (D) and acceptor (A) molecules at the D/A heterojunction on the exciton dissociation. For this purpose, two-dimensional heterojunctions of diindenoperylene (DIP) and N,N'-dioctyl-3,4,9,10-perylene tetracarboxylicdiimide (PTCDI-C) deposited onto SiO/Si are grown, which exemplify two model interfaces with the π-staking direction either perpendicular or parallel to the interface. Aspects related to the morphology of the heterojunctions and charge photogeneration are studied by scanning probe force methods and photoluminescence (PL) spectroscopy. Results from PL spectroscopy indicate that the exciton dissociation is influenced by the different relative molecular orientations of A and D. For the configuration with stronger orbital overlap between A and D at the interface, the exciton dissociation is dominated by recombination from an interfacial charge-transfer state. © 2014 American Chemical Society.

KW - Charge photogeneration

KW - Charge transfer state

KW - Exciton dissociation

KW - Model interface

KW - Orbital overlap

KW - PL spectroscopy

KW - Relative orientation

KW - Scanning probes

U2 - 10.1021/jp5041579

DO - 10.1021/jp5041579

M3 - Article

SN - 1932-7447

VL - 118

SP - 14833

EP - 14839

JO - Journal of Physical Chemistry C

JF - Journal of Physical Chemistry C

IS - 27

ER -

Influence of the relative molecular orientation on interfacial charge-transfer Excitons at donor/acceptor Nanoscale heterojunctions

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