Importance of molecular alignment for organic photovoltaic devices

Zong Xiang Xu; V. A.L. Roy; Zeng Tao Liu; C. S. Lee

doi:10.1063/1.3502598

Importance of molecular alignment for organic photovoltaic devices

Zong Xiang Xu
, V. A.L. Roy
, Zeng Tao Liu
, C. S. Lee

Research output: Contribution to journal › Article › peer-review

28 Citations (Scopus)

Abstract

We study the effect of molecular alignment on the performance of organic photovoltaic devices (OPV) by using two porphyrin molecules of etioporphyrin-I (HOX) and octaethylporphyrin (HOEP) with similar chemical structures. Due to the minor differences in their peripheral substituents, the two porphyrin molecules form crystalline films of different molecular alignment. This has been verified by broader and redshift in the UV-vis absorption spectra as well as the grazing incidence x-ray diffraction of the films. OPV devices fabricated with these films show different performance. Stronger π - π stacking of HOX molecules exhibited better charge transport and photovoltaic performance than that of HOEP molecules.

Original language	English
Article number	163301
Journal	Applied Physics Letters
Volume	97
Issue number	16
DOIs	https://doi.org/10.1063/1.3502598
Publication status	Published - 18 Oct 2010
Externally published	Yes

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10.1063/1.3502598

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title = "Importance of molecular alignment for organic photovoltaic devices",

abstract = "We study the effect of molecular alignment on the performance of organic photovoltaic devices (OPV) by using two porphyrin molecules of etioporphyrin-I (HOX) and octaethylporphyrin (HOEP) with similar chemical structures. Due to the minor differences in their peripheral substituents, the two porphyrin molecules form crystalline films of different molecular alignment. This has been verified by broader and redshift in the UV-vis absorption spectra as well as the grazing incidence x-ray diffraction of the films. OPV devices fabricated with these films show different performance. Stronger π - π stacking of HOX molecules exhibited better charge transport and photovoltaic performance than that of HOEP molecules.",

author = "Xu, \{Zong Xiang\} and Roy, \{V. A.L.\} and Liu, \{Zeng Tao\} and Lee, \{C. S.\}",

note = "Funding Information: This work was financially supported by City University of Hong Kong (Project Nos. 7200135 and 7002454).",

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doi = "10.1063/1.3502598",

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T1 - Importance of molecular alignment for organic photovoltaic devices

AU - Xu, Zong Xiang

AU - Roy, V. A.L.

AU - Liu, Zeng Tao

AU - Lee, C. S.

N1 - Funding Information: This work was financially supported by City University of Hong Kong (Project Nos. 7200135 and 7002454).

PY - 2010/10/18

Y1 - 2010/10/18

N2 - We study the effect of molecular alignment on the performance of organic photovoltaic devices (OPV) by using two porphyrin molecules of etioporphyrin-I (HOX) and octaethylporphyrin (HOEP) with similar chemical structures. Due to the minor differences in their peripheral substituents, the two porphyrin molecules form crystalline films of different molecular alignment. This has been verified by broader and redshift in the UV-vis absorption spectra as well as the grazing incidence x-ray diffraction of the films. OPV devices fabricated with these films show different performance. Stronger π - π stacking of HOX molecules exhibited better charge transport and photovoltaic performance than that of HOEP molecules.

AB - We study the effect of molecular alignment on the performance of organic photovoltaic devices (OPV) by using two porphyrin molecules of etioporphyrin-I (HOX) and octaethylporphyrin (HOEP) with similar chemical structures. Due to the minor differences in their peripheral substituents, the two porphyrin molecules form crystalline films of different molecular alignment. This has been verified by broader and redshift in the UV-vis absorption spectra as well as the grazing incidence x-ray diffraction of the films. OPV devices fabricated with these films show different performance. Stronger π - π stacking of HOX molecules exhibited better charge transport and photovoltaic performance than that of HOEP molecules.

UR - https://www.scopus.com/pages/publications/77958450906

U2 - 10.1063/1.3502598

DO - 10.1063/1.3502598

M3 - Article

AN - SCOPUS:77958450906

SN - 0003-6951

VL - 97

JO - Applied Physics Letters

JF - Applied Physics Letters

IS - 16

M1 - 163301

ER -

Importance of molecular alignment for organic photovoltaic devices

Abstract

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