Carbon materials

Students will learn theoretical basics of electronic properties of organic semiconductors and graphene. They will become acquainted about the preparation of thin films and measurements of mobility of charge carriers.

1. Organic semiconductors

a. Polymers and small molecules

b. Electronic properties

c. Fabrication and applications

2. Transport of charge carriers in disordered solids

a. Localized states in organic semiconductors

b. Hopping

3. Electronic energy structure of two-dimensional crystals

a. Double and single layer graphene

b. Graphene ribbons

c. Charge transport in graphene

d. Fabrication of graphene and its use in electronics

4. Systems graphene/organic semiconductors

a. Electronic properties

b. Fabrication and applications

5. Measurements of mobility of charge carriers in organic semiconductors

a. Interaction photon-molecule

b. Excitons

c. Measurements of time of flight in thin organic layers.

d. Mobility measurements in organic thin film transistors

Students will understand the difference between the transport of charges in disordered structures and ideal crystals. They will comprehend the role of reduced dimensionality on electronic energy structure. They will be able to distinguish between the mobility measurements by time-of-flight and thin film transistors.

• R. Farchioni G. Grosso eds. Organic electronic materials, Springer, Berlin (2001)

• W. Brütting, CH. Adachi eds., Physics of organic semiconductors Wiley-VCH,

Weinheim (2012)

• R. Murali ed. Graphene Nanoelectronics, Springer, New York (2012)

Seminar work (50%), Oral exam (50%)

Prof. dr. Egon Pavlica:

Full Professor of Physics at the University of Nova Gorica

Selected publications:

1. PATHIPATI, Srinivasa Rao, PAVLICA, Egon, PARVEZ, Khaled, FENG, Xinliang, MULLEN, Klaus, BRATINA, Gvido. Graphene flakes at the SiO[sub]2/organic-semiconductor interface for high-mobility field-effect transistors. Organic electronics, ISSN 1566-1199, 2015, vol. 27, str. 221-226, ilustr., doi: 10.1016/j.orgel.2015.09.004. [COBISS.SI-ID 4056059]

2. CHHIKARA, Manisha, PAVLICA, Egon, MATKOVIĆ, Aleksandar, BELTAOS, Angela, GAJIĆ, Radoš, BRATINA, Gvido. Pentacene on graphene : differences between single layer and bilayer. Carbon, ISSN 0008-6223. [Print ed.], 2014, vol. 69, str. 162-168, doi: 10.1016/j.carbon.2013.12.002. [COBISS.SI-ID 2987003]

3. PATHIPATI, Srinivasa Rao, PAVLICA, Egon, SCHLIERF, Andrea, EL GEMAYEL, Mirella, SAMORI, Paolo, PALERMO, Vincenzo, BRATINA, Gvido. Graphene-induced enhancement of n-type mobility in perylenediimide thin films. The journal of physical chemistry. C, Nanomaterials and interfaces, ISSN 1932-7447, 2014, vol. 118, no. 43, str. 24819-24826, doi: 10.1021/jp505463v. [COBISS.SI-ID 3614971]

4. CHHIKARA, Manisha, PAVLICA, Egon, MATKOVIĆ, Aleksandar, GAJIĆ, Radoš, BRATINA, Gvido. Effect of water layer at the SiO[sub]2/graphene interface on pentacene morphology. Langmuir, ISSN 0743-7463, 2014, vol. 30, no. 39, str. 11681-11688, doi: 10.1021/la502970q. [COBISS.SI-ID 3574011]

5. ORGIU, Emanuele, PAVLICA, Egon, BRATINA, Gvido, et al. Optically switchable transistor via energy-level phototuning in a bicomponent organic semiconductor. Nature chemistry, ISSN 1755-4330. [Print ed.], 2012, vol. 4, no. 8, str. 675-679, doi: 10.1038/nchem.1384. [COBISS.SI-ID2411003]