Journal article
Scanning tunneling microscopy of 1, 2, and 3 layers of electroactive compounds
Ultramicroscopy, Vol.97(1), pp.47-53
2003
Handle:
https://hdl.handle.net/2376/107028
PMID: 12801656
Abstract
Bilayer and trilayer organic films grown on Au(1
1
1) were studied by scanning tunneling microscopy (STM). Studies were carried out under UHV conditions with the sample cooled to either 80 or 100
K. Cobalt(II)phthalocyanine [CoPc] was deposited from vapor onto Au(1
1
1), followed by vanadyl phthalocyanine, VOPc. CoPc coverages studied were 0.5 and 1 monolayer, while VOPc coverages were about 0.5 monolayer. Constant current images were acquired at high tunneling gap resistance, of the order of 30
GΩ. Two different physical structures were observed for VOPc on CoPc, and each had a characteristic
I(
V) curve indicating significantly different unoccupied state density. It is also demonstrated that the transmission factor for two layers of VOPc is not simply the product of the transmission factors for each layer.
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Details
- Title
- Scanning tunneling microscopy of 1, 2, and 3 layers of electroactive compounds
- Creators
- Dan BarlowLouis ScudieroK.W Hipps
- Publication Details
- Ultramicroscopy, Vol.97(1), pp.47-53
- Academic Unit
- Chemistry, Department of
- Publisher
- Elsevier B.V
- Identifiers
- 99900546745101842
- Language
- English
- Resource Type
- Journal article