Electronic structure of C60/zinc phthalocyanine/V2o5 interfaces studied using photoemission spectroscopy for organic photovoltaic applications

Chang Jin Lim; Min Gyu Park; Min Su Kim; Jeong Hwa Han; Soohaeng Cho; Mann Ho Cho; Yeonjin Yi; Hyunbok Lee; Sang Wan Cho

doi:10.3390/molecules23020449

Electronic structure of C60/zinc phthalocyanine/V2o5 interfaces studied using photoemission spectroscopy for organic photovoltaic applications

Chang Jin Lim, Min Gyu Park, Min Su Kim, Jeong Hwa Han, Soohaeng Cho, Mann Ho Cho, Yeonjin Yi, Hyunbok Lee, Sang Wan Cho

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

14 Citations (Scopus)

Abstract

The interfacial electronic structures of a bilayer of fullerene (C60) and zinc phthalocyanine (ZnPc) grown on vanadium pentoxide (V2O5) thin films deposited using radio frequency sputtering under various conditions were studied using X-ray and ultraviolet photoelectron spectroscopy. The energy difference between the highest occupied molecular orbital (HOMO) level of the ZnPc layer and the lowest unoccupied molecular orbital (LUMO) level of the C60 layer was determined and compared with that grown on an indium tin oxide (ITO) substrate. The energy difference of a heterojunction on all V2O5 was found to be 1.3~1.4 eV, while that on ITO was 1.1 eV. This difference could be due to the higher binding energy of the HOMO of ZnPc on V2O5 than that on ITO regardless of work functions of the substrates. We also determined the complete energy level diagrams of C60/ZnPc on V2O5 and ITO.

Original language	English
Article number	449
Journal	Molecules
Volume	23
Issue number	2
DOIs	https://doi.org/10.3390/molecules23020449
Publication status	Published - 2018

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© 2018 by the authors.

All Science Journal Classification (ASJC) codes

Analytical Chemistry
Chemistry (miscellaneous)
Molecular Medicine
Pharmaceutical Science
Drug Discovery
Physical and Theoretical Chemistry
Organic Chemistry

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title = "Electronic structure of C60/zinc phthalocyanine/V2o5 interfaces studied using photoemission spectroscopy for organic photovoltaic applications",

abstract = "The interfacial electronic structures of a bilayer of fullerene (C60) and zinc phthalocyanine (ZnPc) grown on vanadium pentoxide (V2O5) thin films deposited using radio frequency sputtering under various conditions were studied using X-ray and ultraviolet photoelectron spectroscopy. The energy difference between the highest occupied molecular orbital (HOMO) level of the ZnPc layer and the lowest unoccupied molecular orbital (LUMO) level of the C60 layer was determined and compared with that grown on an indium tin oxide (ITO) substrate. The energy difference of a heterojunction on all V2O5 was found to be 1.3~1.4 eV, while that on ITO was 1.1 eV. This difference could be due to the higher binding energy of the HOMO of ZnPc on V2O5 than that on ITO regardless of work functions of the substrates. We also determined the complete energy level diagrams of C60/ZnPc on V2O5 and ITO.",

author = "Lim, {Chang Jin} and Park, {Min Gyu} and Kim, {Min Su} and Han, {Jeong Hwa} and Soohaeng Cho and Cho, {Mann Ho} and Yeonjin Yi and Hyunbok Lee and Cho, {Sang Wan}",

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doi = "10.3390/molecules23020449",

language = "English",

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AU - Lim, Chang Jin

AU - Park, Min Gyu

AU - Kim, Min Su

AU - Han, Jeong Hwa

AU - Cho, Soohaeng

AU - Cho, Mann Ho

AU - Yi, Yeonjin

AU - Lee, Hyunbok

AU - Cho, Sang Wan

PY - 2018

Y1 - 2018

N2 - The interfacial electronic structures of a bilayer of fullerene (C60) and zinc phthalocyanine (ZnPc) grown on vanadium pentoxide (V2O5) thin films deposited using radio frequency sputtering under various conditions were studied using X-ray and ultraviolet photoelectron spectroscopy. The energy difference between the highest occupied molecular orbital (HOMO) level of the ZnPc layer and the lowest unoccupied molecular orbital (LUMO) level of the C60 layer was determined and compared with that grown on an indium tin oxide (ITO) substrate. The energy difference of a heterojunction on all V2O5 was found to be 1.3~1.4 eV, while that on ITO was 1.1 eV. This difference could be due to the higher binding energy of the HOMO of ZnPc on V2O5 than that on ITO regardless of work functions of the substrates. We also determined the complete energy level diagrams of C60/ZnPc on V2O5 and ITO.

AB - The interfacial electronic structures of a bilayer of fullerene (C60) and zinc phthalocyanine (ZnPc) grown on vanadium pentoxide (V2O5) thin films deposited using radio frequency sputtering under various conditions were studied using X-ray and ultraviolet photoelectron spectroscopy. The energy difference between the highest occupied molecular orbital (HOMO) level of the ZnPc layer and the lowest unoccupied molecular orbital (LUMO) level of the C60 layer was determined and compared with that grown on an indium tin oxide (ITO) substrate. The energy difference of a heterojunction on all V2O5 was found to be 1.3~1.4 eV, while that on ITO was 1.1 eV. This difference could be due to the higher binding energy of the HOMO of ZnPc on V2O5 than that on ITO regardless of work functions of the substrates. We also determined the complete energy level diagrams of C60/ZnPc on V2O5 and ITO.

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JO - Molecules

JF - Molecules

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Electronic structure of C60/zinc phthalocyanine/V2o5 interfaces studied using photoemission spectroscopy for organic photovoltaic applications

Abstract

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UN SDGs

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