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Study of fundamental physical parameters involved in the charge transport of bulk heterojunction solar cells

Grant number: 18/11704-2
Support type:Research Grants - Visiting Researcher Grant - International
Duration: August 19, 2018 - September 26, 2018
Field of knowledge:Physical Sciences and Mathematics - Physics - Condensed Matter Physics
Principal Investigator:Roberto Mendonça Faria
Grantee:Roberto Mendonça Faria
Visiting researcher: Heinz Von Seggern
Visiting researcher institution: Technische Universität Darmstadt (TU Darmstadt), Germany
Home Institution: Instituto de Física de São Carlos (IFSC). Universidade de São Paulo (USP). São Carlos , SP, Brazil


The specific objective of the visit of prof. von Seggern is to continue a collaboration started more than two years ago on organic solar cells, in which we have already two publications in collaboration with him, which involved two PhD theses. We are currently conducting studies about transport dynamics in ITO/PEDOT: PSS/PTB7-Th: PC71BM/Ca-Al structures, using the following techniques: current-voltage techniques in the dark and under illumination, photovoltage transient, transient charge extraction and CELIV (Charge Extraction by Linear Voltage Ramp). Measurements have been carried out at different temperatures, in the range of 100 to 300 K. Prof. von Seggern will collaborate on interpretations of results and on theoretical modelling, in a work that involves a PhD student and a postdoctoral student. (AU)