Impact of energetic disorder and localization on the conductivity and mobility of organic semiconductors

F. Torricelli, L. Colalongo, L. Milani, Z.M. Kovacs-Vajna, E. Cantatore

Research output: Chapter in Book/Report/Conference proceedingConference contributionAcademicpeer-review

3 Citations (Scopus)

Abstract

The impact of the energetic disorder and the charge localization on the conductivity, mobility and carrier concentration is investigated both theoretically and experimentally. This study gives three fundamental results: (i) the magnitude of the conductivity is strongly dependent on the spatial charge localization but (ii) the conductivity as a function of temperature and Fermi level is independent on the shape of the Density of States (DOS). On the other hand (iii) the mobility is strongly influenced by the DOS, hence the DOS affect the mobility only indirectly through the charge concentration. We show that many experimental observation and theoretical investigations can be merged in a simple physical framework based on hopping and percolation. The spatial localization and energetic disorder are the key elements to reach an unified picture of the mobility of organic semiconductors.
Original languageEnglish
Title of host publicationInternational Conference on Simulation of Semiconductor Processes and Devices (SISPAD2011), 8-10 September 2011, Osaka, Japan
Place of PublicationPiscataway
PublisherInstitute of Electrical and Electronics Engineers
Pages195-198
ISBN (Print)978-1-61284-419-0
DOIs
Publication statusPublished - 2011
Eventconference; International Conference on Simulation of Semiconductor Processes and Devices (SISPAD); 2011-09-08; 2011-09-10 -
Duration: 8 Sep 201110 Sep 2011

Conference

Conferenceconference; International Conference on Simulation of Semiconductor Processes and Devices (SISPAD); 2011-09-08; 2011-09-10
Period8/09/1110/09/11
OtherInternational Conference on Simulation of Semiconductor Processes and Devices (SISPAD)

Fingerprint

Dive into the research topics of 'Impact of energetic disorder and localization on the conductivity and mobility of organic semiconductors'. Together they form a unique fingerprint.

Cite this