Advanced search
Start date

Characterization of semiconducting organic molecules devices by electric impedance/capacitance spectroscopy technique

Grant number: 09/15848-0
Support Opportunities:Scholarships abroad - Research
Effective date (Start): February 01, 2010
Effective date (End): March 19, 2010
Field of knowledge:Physical Sciences and Mathematics - Physics - Condensed Matter Physics
Principal Investigator:Lucas Fugikawa Santos
Grantee:Lucas Fugikawa Santos
Host Investigator: Heinz von Seggern
Host Institution: Instituto de Biociências, Letras e Ciências Exatas (IBILCE). Universidade Estadual Paulista (UNESP). Campus de São José do Rio Preto. São José do Rio Preto , SP, Brazil
Research place: Technische Universität Darmstadt (TU Darmstadt), Germany  


In this project, the electrical properties of pentacene-based optoelectronic devices will be studied in metal/pentacene/metal structures using different metals as electrodes, different thickness of the active layer and at different temperatures. The aim of the project is to understand the charge-carrier injection and transport processes in organic semiconductors by means of current-voltage (I-V) and impedance/capacitance spectroscopy techniques. Particularly, the negative capacitance (NC) effect, which occurs at certain experimental conditions in the low-frequency region, will be investigated. The results will be analyzed qualitatively using theories which consider space-charge effects and charge-carrier recombination in the bulk. The elaboration of a quantitative model for the negative capacitance effect in organic semiconductors, based on the analysis of the preliminary data, is also intended. (AU)

News published in Agência FAPESP Newsletter about the scholarship:
Articles published in other media outlets (0 total):
More itemsLess items

Please report errors in scientific publications list using this form.