Cited by 24Organic Electronics and PhotovoltaicsPorphyrin and Phthalocyanine ChemistryOrganic Light-Emitting Diodes Research

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Importance of molecular alignment for organic photovoltaic devices

Xu, Zong-Xiang, Roy, V. A. L., Liu, Zeng-Tao, Lee, C. S.·2010·Applied Physics Letters

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.

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Crossref · 10.1063/1.3502598

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  • For C4 and C5, optical and charge-transporting properties changed with changes in structure.

    “The results indicated that optical and charge-transporting properties were changed with the changes of structures.”
  • C4 showed a higher PCE than C5 due to higher charge carrier mobility and broader absorbance.

    “C4 showed a higher PCE due to higher charge carrier mobility and broader absorbance than C5 .”

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Research works printed but not linked: 18

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Metadata

Authors
Xu, Z.-X., Roy, V. A. L., Liu, Z.-T., & Lee, C. S.
Affiliations
  • City University of Hong Kong (HK)
  • City University of Hong Kong 1 Department of Physics and Materials Science, , Tat Chee Avenue, Kowloon, Hong Kong
Venue
Applied Physics Letters
Published
2010-10-18
Volume
97
Issue
16
ISSN
  • 0003-6951 (ISSN-L)
  • 1077-3118
OpenAlex
W2031996947
Cited by
24
References
0
Citations by year
2026: 1 · 2023: 3 · 2022: 1 · 2019: 2 · 2018: 1 · 2017: 1 · 2015: 2 · 2014: 5 · 2013: 2 · 2012: 4
FWCI
2.02
Type
journal article
Language
en
Open access
closed
Locations
  • Applied Physics Letters (publishedVersion)
  • ENLIGHTEN (Jurnal Bimbingan dan Konseling Islam) (submittedVersion)
Topics
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Organic Electronics and Photovoltaics
  • Physical Sciences › Materials Science › Materials Chemistry › Porphyrin and Phthalocyanine Chemistry
  • Physical Sciences › Engineering › Electrical and Electronic Engineering › Organic Light-Emitting Diodes Research
Keywords
molecular alignment, organic photovoltaic devices, porphyrins, octaethylporphyrin, π-π stacking, charge transport, crystalline thin films, peripheral substituents, UV-Vis absorption spectra, grazing incidence X-ray diffraction

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