Nonlinear optical techniques for characterization of organic electronic and photonic devices

Ahmed, Md Soif and Biswas, Chinmoy and Raavi, Sai Santosh Kumar and et al, . (2022) Nonlinear optical techniques for characterization of organic electronic and photonic devices. The European Physical Journal Special Topics, 231 (4). pp. 1-17. ISSN 1951-6355

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Abstract

The turn of this century has undoubtedly brought in tremendous interest in the development of organic electronic and photonic devices. As an aid of understanding the physics behind the device mechanism, various experimental tools are innovated and applied. Herein, various nonlinear optical techniques that are employed towards characterization of these organic material-based devices are reviewed. We describe experimental techniques based on second-harmonic generation (SHG) and sum-frequency generation (SFG) and review some potential applications that basically probe the electric field distribution in the bulk and at interfaces of the electronic and photonic devices. SFG carries information about vibrational spectrum of molecules at the surface, and further analysis of that provides in-depth understanding about their chemical structure and interactions, whereas SHG is sensitive to the electronic spectrum of the interfacial molecules. Thus, a comprehensive study using both of these techniques allows a more complete interfacial characterization of organic devices. Most applications use electric-field-induced SFG (or SHG) to examine the electric field orientation and spatial distribution. Further, time-resolved techniques, such as transient SFG or SHG microscopy, allow direct investigation of the charge carrier motion inside the organic layers under device operation, by probing the change of transient electric field. At the end, we briefly discuss possible directions for further research with these techniques. © 2021, The Author(s), under exclusive licence to EDP Sciences, Springer-Verlag GmbH Germany, part of Springer Nature.

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IITH Creators:

IITH Creators	ORCiD
Raavi, Sai Santosh Kumar	http://orcid.org/0000-0002-2496-9233

Item Type:

Article

Additional Information:

MSA, PBM and SSKR acknowledge the financial support from project no’s BRICS/PilotCall2/IEEE-OSC/2018 (G), whose Brazilian part was funded by CNPq 442239/2017-3. SSKR acknowledges the financial support of DST project CRG/2019/003197.

Uncontrolled Keywords:

electronic and photonic devices, device mechanism, nonlinear optical techniques.

Subjects:

Physics

Divisions:

Department of Physics

Depositing User:

. LibTrainee 2021

Date Deposited:

29 Jun 2022 07:31

Last Modified:

29 Jun 2022 09:40