Variation of photoluminescence of organic semiconducting-rubrene microplate depending on the thicknesses of two-dimensional MoS2 layers

Cheol Joon Park; Changwon Seo; Jeongyong Kim; Jinsoo Joo

doi:10.1016/j.synthmet.2016.05.018

Variation of photoluminescence of organic semiconducting-rubrene microplate depending on the thicknesses of two-dimensional MoS₂ layers

Cheol Joon Park, Changwon Seo, Jeongyong Kim, Jinsoo Joo

Research output: Contribution to journal › Article › peer-review

11 Citations (Scopus)

Abstract

Organic semiconducting-rubrene (5,6,11,12-tetraphenyltetracene) microplates (MPs) were transferred onto the surface of two-dimensional (2-D) inorganic semiconducting molybdenum disulfide (MoS₂). The nanoscale photoluminescence (PL) characteristics of the 2-D hybrid layers of the rubrene/MoS₂ were measured using a high-resolution laser confocal microscope (LCM). We observed that the LCM-PL spectra of the rubrene MPs vary drastically according to the thicknesses of the 2-D MoS₂ layers. When the organic-rubrene MPs were transferred onto the relatively thin MoS₂ layers, the LCM-PL intensities of the rubrene MPs considerably decreased, i.e., PL quenching, because of the photoinduced charge-transfer effect between the p-type rubrene and n-type MoS₂ materials. However, the LCM-PL intensities of the organic-rubrene MPs were gradually enhanced with the increasing thicknesses of the MoS₂ layers due to the dominance of the reflection of the thicker MoS₂ layers whereby the PL quenching is overcome. The results can be used for the data-base to improve the performance of p-n junction photovoltaic devices and light-emitting field-effect transistors.m.

Original language	English
Pages (from-to)	8-13
Number of pages	6
Journal	Synthetic Metals
Volume	220
DOIs	https://doi.org/10.1016/j.synthmet.2016.05.018
Publication status	Published - 2016 Oct 1

Bibliographical note

Funding Information:
This research was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (MSIP) (No. 2015R1A2A2A01003805 ).

Publisher Copyright:
©2016 Elsevier B.V. All rights reserved.

Copyright:
Copyright 2016 Elsevier B.V., All rights reserved.

Keywords

Charge transfer
Molybdenum disulfide
Photoluminescence
Reflection
Rubrene

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys
Materials Chemistry

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

Access to Document

10.1016/j.synthmet.2016.05.018

Cite this

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title = "Variation of photoluminescence of organic semiconducting-rubrene microplate depending on the thicknesses of two-dimensional MoS2 layers",

abstract = "Organic semiconducting-rubrene (5,6,11,12-tetraphenyltetracene) microplates (MPs) were transferred onto the surface of two-dimensional (2-D) inorganic semiconducting molybdenum disulfide (MoS2). The nanoscale photoluminescence (PL) characteristics of the 2-D hybrid layers of the rubrene/MoS2 were measured using a high-resolution laser confocal microscope (LCM). We observed that the LCM-PL spectra of the rubrene MPs vary drastically according to the thicknesses of the 2-D MoS2 layers. When the organic-rubrene MPs were transferred onto the relatively thin MoS2 layers, the LCM-PL intensities of the rubrene MPs considerably decreased, i.e., PL quenching, because of the photoinduced charge-transfer effect between the p-type rubrene and n-type MoS2 materials. However, the LCM-PL intensities of the organic-rubrene MPs were gradually enhanced with the increasing thicknesses of the MoS2 layers due to the dominance of the reflection of the thicker MoS2 layers whereby the PL quenching is overcome. The results can be used for the data-base to improve the performance of p-n junction photovoltaic devices and light-emitting field-effect transistors.m.",

keywords = "Charge transfer, Molybdenum disulfide, Photoluminescence, Reflection, Rubrene",

author = "Park, {Cheol Joon} and Changwon Seo and Jeongyong Kim and Jinsoo Joo",

note = "Funding Information: This research was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (MSIP) (No. 2015R1A2A2A01003805 ). Publisher Copyright: {\textcopyright}2016 Elsevier B.V. All rights reserved. Copyright: Copyright 2016 Elsevier B.V., All rights reserved.",

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doi = "10.1016/j.synthmet.2016.05.018",

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AU - Park, Cheol Joon

AU - Seo, Changwon

AU - Kim, Jeongyong

AU - Joo, Jinsoo

N1 - Funding Information: This research was supported by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (MSIP) (No. 2015R1A2A2A01003805 ). Publisher Copyright: ©2016 Elsevier B.V. All rights reserved. Copyright: Copyright 2016 Elsevier B.V., All rights reserved.

PY - 2016/10/1

Y1 - 2016/10/1

N2 - Organic semiconducting-rubrene (5,6,11,12-tetraphenyltetracene) microplates (MPs) were transferred onto the surface of two-dimensional (2-D) inorganic semiconducting molybdenum disulfide (MoS2). The nanoscale photoluminescence (PL) characteristics of the 2-D hybrid layers of the rubrene/MoS2 were measured using a high-resolution laser confocal microscope (LCM). We observed that the LCM-PL spectra of the rubrene MPs vary drastically according to the thicknesses of the 2-D MoS2 layers. When the organic-rubrene MPs were transferred onto the relatively thin MoS2 layers, the LCM-PL intensities of the rubrene MPs considerably decreased, i.e., PL quenching, because of the photoinduced charge-transfer effect between the p-type rubrene and n-type MoS2 materials. However, the LCM-PL intensities of the organic-rubrene MPs were gradually enhanced with the increasing thicknesses of the MoS2 layers due to the dominance of the reflection of the thicker MoS2 layers whereby the PL quenching is overcome. The results can be used for the data-base to improve the performance of p-n junction photovoltaic devices and light-emitting field-effect transistors.m.

AB - Organic semiconducting-rubrene (5,6,11,12-tetraphenyltetracene) microplates (MPs) were transferred onto the surface of two-dimensional (2-D) inorganic semiconducting molybdenum disulfide (MoS2). The nanoscale photoluminescence (PL) characteristics of the 2-D hybrid layers of the rubrene/MoS2 were measured using a high-resolution laser confocal microscope (LCM). We observed that the LCM-PL spectra of the rubrene MPs vary drastically according to the thicknesses of the 2-D MoS2 layers. When the organic-rubrene MPs were transferred onto the relatively thin MoS2 layers, the LCM-PL intensities of the rubrene MPs considerably decreased, i.e., PL quenching, because of the photoinduced charge-transfer effect between the p-type rubrene and n-type MoS2 materials. However, the LCM-PL intensities of the organic-rubrene MPs were gradually enhanced with the increasing thicknesses of the MoS2 layers due to the dominance of the reflection of the thicker MoS2 layers whereby the PL quenching is overcome. The results can be used for the data-base to improve the performance of p-n junction photovoltaic devices and light-emitting field-effect transistors.m.

KW - Charge transfer

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