Abstract
The interfacial electronic structure of a bilayer of fullerene (C60) and zinc phthalocyanine (ZnPc) grown on aluminum-doped zinc oxide (AZO) substrates has been evaluated by X-ray and ultraviolet photoemission 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 (ED HOMO − EA LUMO) was determined and compared to that grown on an indium tin oxide (ITO) substrate. The ED HOMO − EA LUMO value of the heterojunction on AZO was 1.4 eV, while that on ITO was 1.1 eV. This result is discussed in terms of the differences of the work function and resistivity of each transparent conductive oxide. We also obtained complete energy level diagrams of C60/ZnPc/AZO and C60/ZnPc/ITO.
| Original language | English |
|---|---|
| Pages (from-to) | 145-149 |
| Number of pages | 5 |
| Journal | Chemical Physics |
| Volume | 478 |
| DOIs | |
| Publication status | Published - 2016 Oct 20 |
Fingerprint
All Science Journal Classification (ASJC) codes
- Physics and Astronomy(all)
- Physical and Theoretical Chemistry
Cite this
}
Interfacial electronic structure of C60/ZnPc/AZO on photoemission spectroscopy for organic photovoltaic applications. / Heo, Nari; Kim, Yoonsu; Jung, Yunwoo; Cheon, Suyoung; Cho, Soohaeng; Cho, Sangwan; Park, Soohyung; Yi, Yeonjin; Smith, Kevin E.
In: Chemical Physics, Vol. 478, 20.10.2016, p. 145-149.Research output: Contribution to journal › Article
TY - JOUR
T1 - Interfacial electronic structure of C60/ZnPc/AZO on photoemission spectroscopy for organic photovoltaic applications
AU - Heo, Nari
AU - Kim, Yoonsu
AU - Jung, Yunwoo
AU - Cheon, Suyoung
AU - Cho, Soohaeng
AU - Cho, Sangwan
AU - Park, Soohyung
AU - Yi, Yeonjin
AU - Smith, Kevin E.
PY - 2016/10/20
Y1 - 2016/10/20
N2 - The interfacial electronic structure of a bilayer of fullerene (C60) and zinc phthalocyanine (ZnPc) grown on aluminum-doped zinc oxide (AZO) substrates has been evaluated by X-ray and ultraviolet photoemission 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 (ED HOMO − EA LUMO) was determined and compared to that grown on an indium tin oxide (ITO) substrate. The ED HOMO − EA LUMO value of the heterojunction on AZO was 1.4 eV, while that on ITO was 1.1 eV. This result is discussed in terms of the differences of the work function and resistivity of each transparent conductive oxide. We also obtained complete energy level diagrams of C60/ZnPc/AZO and C60/ZnPc/ITO.
AB - The interfacial electronic structure of a bilayer of fullerene (C60) and zinc phthalocyanine (ZnPc) grown on aluminum-doped zinc oxide (AZO) substrates has been evaluated by X-ray and ultraviolet photoemission 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 (ED HOMO − EA LUMO) was determined and compared to that grown on an indium tin oxide (ITO) substrate. The ED HOMO − EA LUMO value of the heterojunction on AZO was 1.4 eV, while that on ITO was 1.1 eV. This result is discussed in terms of the differences of the work function and resistivity of each transparent conductive oxide. We also obtained complete energy level diagrams of C60/ZnPc/AZO and C60/ZnPc/ITO.
UR - http://www.scopus.com/inward/record.url?scp=84963705863&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84963705863&partnerID=8YFLogxK
U2 - 10.1016/j.chemphys.2016.03.025
DO - 10.1016/j.chemphys.2016.03.025
M3 - Article
AN - SCOPUS:84963705863
VL - 478
SP - 145
EP - 149
JO - Chemical Physics
JF - Chemical Physics
SN - 0301-0104
ER -