Abstract
Energy level alignment at interfaces is critical for fundamental understanding and optimization of organic photovoltaics (OPV) as band offsets of the donor and acceptor materials largely determine the open circuit voltage (Voc) of the device. Using ultraviolet photoemission spectroscopy (UPS) and inverse photoemission spectroscopy (IPS), we examined the correlation between energy level alignment and photovoltaic properties of a model bilayer hybrid solar cell incorporating electrodeposited polythiophene (e-PT) films on ZnO planar substrates. The electrolyte anion (BF4-, PF6-, ClO4- or CF3SO 3-) in the electrodeposition solution was found to have a strong influence on the e-PT film morphology and adhesion, the energy level alignment at the interface, and ultimately the Voc of the photovoltaic devices.
| Original language | English |
|---|---|
| Pages (from-to) | 7034-7044 |
| Number of pages | 11 |
| Journal | Journal of Materials Chemistry A |
| Volume | 2 |
| Issue number | 19 |
| DOIs | |
| Publication status | Published - May 21 2014 |
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ASJC Scopus subject areas
- Chemistry(all)
- Renewable Energy, Sustainability and the Environment
- Materials Science(all)
Cite this
Energy level alignment of polythiophene/ZnO hybrid solar cells. / Feng, W.; Rangan, S.; Cao, Y.; Galoppini, E.; Bartynski, R. A.; Garfunkel, Eric.
In: Journal of Materials Chemistry A, Vol. 2, No. 19, 21.05.2014, p. 7034-7044.Research output: Contribution to journal › Article
}
TY - JOUR
T1 - Energy level alignment of polythiophene/ZnO hybrid solar cells
AU - Feng, W.
AU - Rangan, S.
AU - Cao, Y.
AU - Galoppini, E.
AU - Bartynski, R. A.
AU - Garfunkel, Eric
PY - 2014/5/21
Y1 - 2014/5/21
N2 - Energy level alignment at interfaces is critical for fundamental understanding and optimization of organic photovoltaics (OPV) as band offsets of the donor and acceptor materials largely determine the open circuit voltage (Voc) of the device. Using ultraviolet photoemission spectroscopy (UPS) and inverse photoemission spectroscopy (IPS), we examined the correlation between energy level alignment and photovoltaic properties of a model bilayer hybrid solar cell incorporating electrodeposited polythiophene (e-PT) films on ZnO planar substrates. The electrolyte anion (BF4-, PF6-, ClO4- or CF3SO 3-) in the electrodeposition solution was found to have a strong influence on the e-PT film morphology and adhesion, the energy level alignment at the interface, and ultimately the Voc of the photovoltaic devices.
AB - Energy level alignment at interfaces is critical for fundamental understanding and optimization of organic photovoltaics (OPV) as band offsets of the donor and acceptor materials largely determine the open circuit voltage (Voc) of the device. Using ultraviolet photoemission spectroscopy (UPS) and inverse photoemission spectroscopy (IPS), we examined the correlation between energy level alignment and photovoltaic properties of a model bilayer hybrid solar cell incorporating electrodeposited polythiophene (e-PT) films on ZnO planar substrates. The electrolyte anion (BF4-, PF6-, ClO4- or CF3SO 3-) in the electrodeposition solution was found to have a strong influence on the e-PT film morphology and adhesion, the energy level alignment at the interface, and ultimately the Voc of the photovoltaic devices.
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U2 - 10.1039/c4ta00937a
DO - 10.1039/c4ta00937a
M3 - Article
VL - 2
SP - 7034
EP - 7044
JO - Journal of Materials Chemistry A
JF - Journal of Materials Chemistry A
SN - 2050-7488
IS - 19
ER -