Abstract
Resume: In this study, we demonstrate that nonlinear optical microscopy
is a promising technique to characterize organic printed electronics.
Using ultrashort laser pulses we stimulate two-photon absorption in a
roll coated polymer semiconductor and map the resulting two-photon
induced photoluminescence (TPPL) and second harmonic response. First, we
show that the different nonlinear optical signals can be used to
discriminate between the polymer semiconductor material and embedded
nanoparticles which constitute the electrode in a real device. Next we
demonstrate that the TPPL quenches when applying a current between
source and drain; this decrease can be used to determine the electrical
characteristic of the device. Finally, we show that the TPPL increases
with higher temperature in the 20 - 120 °C range, closely following the
supported current characteristics of the semiconductor. We propose that
the TPPL is a good indicator to map and monitor the charge carrier
density and the molecular packing of the printed polymer material.
Importantly, simple calculations based on the signal levels, suggest
that this technique can be extended to the real time mapping of the
polymer semiconductor film, even during the printing process, in which
the high printing speed poses the need for equally high acquisition
rates.
Original language | English |
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Publication date | 2017 |
Number of pages | 1 |
Publication status | Published - 2017 |
Event | E-MRS Spring Meeting 2017 - Strasbourg Convention Centre , Stasbourg, France Duration: 22 May 2017 → 26 May 2017 http://www.european-mrs.com/meetings/2017-spring-meeting |
Conference
Conference | E-MRS Spring Meeting 2017 |
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Location | Strasbourg Convention Centre |
Country/Territory | France |
City | Stasbourg |
Period | 22/05/2017 → 26/05/2017 |
Internet address |