COMPARATIVE STUDY OF DIFFERENT NIR SENSITIVE LAYERS FOR  ALL-ORGANIC UPCONVERSION DEVICES

Tomás Barreira Duarte; Juan David Nieto García; Rafael Dos Santos Carvalho; Marco Cremona

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Paper Title

COMPARATIVE STUDY OF DIFFERENT NIR SENSITIVE LAYERS FOR ALL-ORGANIC UPCONVERSION DEVICES

Authors

Tomás Barreira Duarte
Juan David Nieto García
Rafael Dos Santos Carvalho
Marco Cremona

Modality

Pôster

Subject area

Dispositivos eletrônicos e ópticos (OLED/OFET/OPVs/etc.)

Publishing Date

12/12/2023

Country of Publishing

Brasil

Language of Publishing

Inglês

Paper Page

https://www.even3.com.br/anais/workshop-do-ineo-2023/613347-comparative-study-of-different-nir-sensitive-layers-for--all-organic-upconversion-devices

ISBN

978-65-272-0088-8

Keywords

NIR, OUD, OPD, OLED, Upconversion

Summary

The new technological revolution has gained relevance in recent decades due to the constant contact of human beings with electronic devices in their daily lives. For that reason, the electronics industry has been concerned with improving the characteristics and performance of electronics with lighter, more flexible, thinner, more portable and cheaper to manufacture products. Thus, several organic electronic devices with notable performance have been proposed, such as OLEDs (Organic Light-Emitting Diode), OFETs (Organic Field-Effect Transistor), OPVs (Organic Photovoltaic Devices), and OUDs (Organic Upconversion Devices), the latter have special attention due to their interesting applications in optical communication, night vision, aerospace technology, environmental monitoring, biological imaging, among others functionalities for their ability to convert wavelengths from the infrared to the visible spectrum. OUDs consist of a single two unit’s device combining an organic photodetector and an OLED in a tandem configuration. The photodetector is responsible for receiving the infrared radiation and converting the photons into electrical charges that allows the OLED, maintained in a threshold, to emit light once this conversion is done. For the fabrication of the photodetector unit organic semiconductors as phthalocyanines (Pc), naphthalocyanines (Nc) and Cyanines can be used [1,2]. However, high conversion efficiency, low working voltages and linear dynamic range represent key issues for the development of practical commercial devices. Besides the optimization of the whole device, the NIR sensitive layer is one of the most important points to be improved due to its crucial duty. In this work, a comparative study among three cyanine-based photodetectors: Tin(II) Phthalocyanine (SnPc), chloroaluminum phthalocyanine (ClAlPc) and Tin(II) 2,3-naphthalocyanine (SnNc) phthalocyanine employed in the fabrication of the same OUD structure was performed. All the fabricated OUDs were able to convert the infrared radiation into visible emission, with an incident NIR radiation of 830 nm, with different on/off ratio values. The on/off ratio of luminance is calculated by Lmax/Lmin, where Lmax and Lmin are the maximum and minimum luminance, respectively, of the OUD when the NIR radiation is ON or OFF. The maximum on/off ratio, at 10 V was 1450 for the SnPc OUD, comparable with those found in literature. For the SnNc and ClAlPc based devices we found lower values, but with not optimized devices. These preliminary results show the possibility to extend the study for other kind of NIR sensitive molecules to achieve better on/off ratio values with lower working voltages and in other infrared regions. References: 1 Aderne, R. et al. Organic Electronics, v. 74, p. 96–102, 1 nov. 2019. 2 Hany, Roland ; Cremona, Marco ; Strassel, Karen, Science and Technology of Advanced Materials, v. 20, p. 497-510, 2019. 3 Do Young Kim, Dong Woo Song, Neetu Chopra, Pieter De Somer, Franky So, Advanced Materials, v.22, p. 2260-2263, 2010.

Title of the Event: Workshop do INEO 2023
City of the Event: Nazaré Paulista
Title of the Proceedings of the event: Anais do Workshop INEO 2023
Name of the Publisher: Even3
Means of Dissemination: Meio Digital
DOI: Get DOI

How to cite

DUARTE, Tomás Barreira et al.. COMPARATIVE STUDY OF DIFFERENT NIR SENSITIVE LAYERS FOR ALL-ORGANIC UPCONVERSION DEVICES.. In: Anais do workshop INEO 2023. Anais...Nazaré Paulista(SP) Hotel Estância Atibainha, 2023. Available in: https//www.even3.com.br/anais/workshop-do-ineo-2023/613347-COMPARATIVE-STUDY-OF-DIFFERENT-NIR-SENSITIVE-LAYERS-FOR--ALL-ORGANIC-UPCONVERSION-DEVICES. Access in: 27/07/2024