Characterisation of charge carrier transport in thin organic semiconductor layers by time-of-flight photocurrent measurements

Gvido Bratina (Author), Egon Pavlica (Author)

Abstract

The paper reviews recent advances in characterisation of charge carrier transport in organic semiconductor layers by time-of-flight photocurrent measurements, with the emphasis on the measurements of the samples with co-planar electrodes. These samples comprised an organic semiconductor layer whose thickness is on the order of a μm or less, and thus mimic the structures of organic thin film transistors. In the review we emphasise the importance of considering spatial variation of electric field in these, essentially two-dimensional structures, in interpretation of photocurrent transients. We review the experimental details of this type of measurements and give examples that demonstrate exceptional sensitivity of the method to minute concentration of electrically active defects in the organic semiconductors as well as the capability of probing charge transport along the channels of different mobility that reside in the same sample.

Keywords

organic semiconductors;time of flight;mobility;

Data

Language:	English
Year of publishing:	2019
Typology:	1.02 - Review Article
Organization:	UNG - University of Nova Gorica
UDC:	53
COBISS:	5255163
ISSN:	1566-1199
Views:	2969
Downloads:	0
Average score:	0 (0 votes)
Metadata:

Other data

URN:	URN:SI:UNG
Type (COBISS):	Not categorized
Pages:	str. 117-130
Issue:	ǂVol. ǂ64
Chronology:	Jan. 2019
DOI:	10.1016/j.orgel.2018.09.049
ID:	10979839